Discussion about the Korg PolySix synthesizer

Hello,
Again here is a polysix with the "no sound at all" problem.
When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1 there is a 
constant pattern but not a 0.5 V/oct. Keystrokes has no effect at all, 
processor 8049 gives signals on DB0..DB8. Also no output on gate 0...3 
= pin 15,10,7,2 ic 5 on keystroke.
Does anyone has suggestions.
Please help me, I look forward to hear the nice sound again.
Thans,
Han.

How are the main voltages ? Has the battery leaked ?


--- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...> 
wrote:
>
> Hello,
> Again here is a polysix with the "no sound at all" problem.
> When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1 there 
is a 
> constant pattern but not a 0.5 V/oct. Keystrokes has no effect at 
all, 
> processor 8049 gives signals on DB0..DB8. Also no output on gate 
0...3 

> = pin 15,10,7,2 ic 5 on keystroke.
> Does anyone has suggestions.
> Please help me, I look forward to hear the nice sound again.
> Thans,
> Han.
>

Thanks for reply, I fixed the battery problem as described.
I checked (again) all connections/signals with an oscilloscoop.
I don't see any output, also no gate signals when key-stroke on ic5 
KLM-366. 
What shape must be on TP2 KLM367?
Thanks for your help.
Han
--- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
>
> How are the main voltages ? Has the battery leaked ?
> 
> 
> --- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...> 
> wrote:
> >
> > Hello,
> > Again here is a polysix with the "no sound at all" problem.
> > When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1 
there 
> is a 
> > constant pattern but not a 0.5 V/oct. Keystrokes has no effect 
at 

> all, 
> > processor 8049 gives signals on DB0..DB8. Also no output on gate 
> 0...3 
> > = pin 15,10,7,2 ic 5 on keystroke.
> > Does anyone has suggestions.
> > Please help me, I look forward to hear the nice sound again.
> > Thans,
> > Han.
> >
>

I think the service manual have this information...

--- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...> 
wrote:
>
> Thanks for reply, I fixed the battery problem as described.
> I checked (again) all connections/signals with an oscilloscoop.
> I don't see any output, also no gate signals when key-stroke on ic5 
> KLM-366. 
> What shape must be on TP2 KLM367?
> Thanks for your help.
> Han
> --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
> >
> > How are the main voltages ? Has the battery leaked ?
> > 
> > 
> > --- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...> 
> > wrote:
> > >
> > > Hello,
> > > Again here is a polysix with the "no sound at all" problem.
> > > When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1 
> there 
> > is a 
> > > constant pattern but not a 0.5 V/oct. Keystrokes has no effect 
> at 
> > all, 
> > > processor 8049 gives signals on DB0..DB8. Also no output on 
gate 

> > 0...3 
> > > = pin 15,10,7,2 ic 5 on keystroke.
> > > Does anyone has suggestions.
> > > Please help me, I look forward to hear the nice sound again.
> > > Thans,
> > > Han.
> > >
> >
>

I have a similar problem. Does anyone have a scanned service manual I can 
get emailed? Greatly appreciated


>From: "gil_we" <gil_we@yahoo.com>
>Reply-To: PolySix@yahoogroups.com
>To: PolySix@yahoogroups.com
>Subject: [PolySix] Re: Polysix no sound
>Date: Mon, 05 Dec 2005 08:56:38 -0000
>
>
>
>
>
>I think the service manual have this information...
>
>
>
>--- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...>
>
>wrote:
>
> >
>
> > Thanks for reply, I fixed the battery problem as described.
>
> > I checked (again) all connections/signals with an oscilloscoop.
>
> > I don't see any output, also no gate signals when key-stroke on ic5
>
> > KLM-366.
>
> > What shape must be on TP2 KLM367?
>
> > Thanks for your help.
>
> > Han
>
> > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
>
> > >
>
> > > How are the main voltages ? Has the battery leaked ?
>
> > >
>
> > >
>
> > > --- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...>
>
> > > wrote:
>
> > > >
>
> > > > Hello,
>
> > > > Again here is a polysix with the "no sound at all" problem.
>
> > > > When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1
>
> > there
>
> > > is a
>
> > > > constant pattern but not a 0.5 V/oct. Keystrokes has no effect
>
> > at
>
> > > all,
>
> > > > processor 8049 gives signals on DB0..DB8. Also no output on
>
>gate
>
> > > 0...3
>
> > > > = pin 15,10,7,2 ic 5 on keystroke.
>
> > > > Does anyone has suggestions.
>
> > > > Please help me, I look forward to hear the nice sound again.
>
> > > > Thans,
>
> > > > Han.
>
> > > >
>
> > >
>
> >
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>   YAHOO! GROUPS LINKS
>
>
>
>
>   \ufffdVisit your group "PolySix" on the web.
>\ufffd
>   \ufffdTo unsubscribe from this group, send an email to:
>\ufffdPolySix-unsubscribe@yahoogroups.com
>\ufffd
>   \ufffdYour use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
>
>
>
>
>
>
>
>
>
>
>
>
>
>

_________________________________________________________________
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This might sound trivial but is your power supply output all in 
check. In addition have you checked the the solder pads on the power 
connectors. I had and issue with one poly6 where the 15v solder pad 
on the connector was lifted. Also do a sanity check and make sure you 
chips are all getting proper voltages. Check old crows site for a 
scanned service manual.

http://www.oldcrows.net/







--- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> wrote:
>
> I have a similar problem. Does anyone have a scanned service manual 
I can 
> get emailed? Greatly appreciated
> 
> 
> >From: "gil_we" <gil_we@y...>
> >Reply-To: PolySix@yahoogroups.com
> >To: PolySix@yahoogroups.com
> >Subject: [PolySix] Re: Polysix no sound
> >Date: Mon, 05 Dec 2005 08:56:38 -0000
> >
> >
> >
> >
> >
> >I think the service manual have this information...
> >
> >
> >
> >--- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...>
> >
> >wrote:
> >
> > >
> >
> > > Thanks for reply, I fixed the battery problem as described.
> >
> > > I checked (again) all connections/signals with an oscilloscoop.
> >
> > > I don't see any output, also no gate signals when key-stroke on 
ic5
> >
> > > KLM-366.
> >
> > > What shape must be on TP2 KLM367?
> >
> > > Thanks for your help.
> >
> > > Han
> >
> > > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
> >
> > > >
> >
> > > > How are the main voltages ? Has the battery leaked ?
> >
> > > >
> >
> > > >
> >
> > > > --- In PolySix@yahoogroups.com, "hansomchaam" 
<hansomchaam@y...>
> >
> > > > wrote:
> >
> > > > >
> >
> > > > > Hello,
> >
> > > > > Again here is a polysix with the "no sound at all" problem.
> >
> > > > > When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1
> >
> > > there
> >
> > > > is a
> >
> > > > > constant pattern but not a 0.5 V/oct. Keystrokes has no 
effect
> >
> > > at
> >
> > > > all,
> >
> > > > > processor 8049 gives signals on DB0..DB8. Also no output on
> >
> >gate
> >
> > > > 0...3
> >
> > > > > = pin 15,10,7,2 ic 5 on keystroke.
> >
> > > > > Does anyone has suggestions.
> >
> > > > > Please help me, I look forward to hear the nice sound again.
> >
> > > > > Thans,
> >
> > > > > Han.
> >
> > > > >
> >
> > > >
> >
> > >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >   YAHOO! GROUPS LINKS
> >
> >
> >
> >
> >    Visit your group "PolySix" on the web.
> > 
> >    To unsubscribe from this group, send an email to:
> > PolySix-unsubscribe@yahoogroups.com
> > 
> >    Your use of Yahoo! Groups is subject to the Yahoo! Terms of 
Service.

> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> 
> _________________________________________________________________
> FREE pop-up blocking with the new MSN Toolbar – get it now! 
> http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
>

Thanks, I'll try that


>From: "lnz2166" <lnz2166@yahoo.com>
>Reply-To: PolySix@yahoogroups.com
>To: PolySix@yahoogroups.com
>Subject: [PolySix] Re: Polysix no sound
>Date: Tue, 06 Dec 2005 06:59:25 -0000
>
>
>
>
>
>This might sound trivial but is your power supply output all in
>
>check. In addition have you checked the the solder pads on the power
>
>connectors. I had and issue with one poly6 where the 15v solder pad
>
>on the connector was lifted. Also do a sanity check and make sure you
>
>chips are all getting proper voltages. Check old crows site for a
>
>scanned service manual.
>
>
>
>http://www.oldcrows.net/
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>--- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> wrote:
>
> >
>
> > I have a similar problem. Does anyone have a scanned service manual
>
>I can
>
> > get emailed? Greatly appreciated
>
> >
>
> >
>
> > >From: "gil_we" <gil_we@y...>
>
> > >Reply-To: PolySix@yahoogroups.com
>
> > >To: PolySix@yahoogroups.com
>
> > >Subject: [PolySix] Re: Polysix no sound
>
> > >Date: Mon, 05 Dec 2005 08:56:38 -0000
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >I think the service manual have this information...
>
> > >
>
> > >
>
> > >
>
> > >--- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...>
>
> > >
>
> > >wrote:
>
> > >
>
> > > >
>
> > >
>
> > > > Thanks for reply, I fixed the battery problem as described.
>
> > >
>
> > > > I checked (again) all connections/signals with an oscilloscoop.
>
> > >
>
> > > > I don't see any output, also no gate signals when key-stroke on
>
>ic5
>
> > >
>
> > > > KLM-366.
>
> > >
>
> > > > What shape must be on TP2 KLM367?
>
> > >
>
> > > > Thanks for your help.
>
> > >
>
> > > > Han
>
> > >
>
> > > > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
>
> > >
>
> > > > >
>
> > >
>
> > > > > How are the main voltages ? Has the battery leaked ?
>
> > >
>
> > > > >
>
> > >
>
> > > > >
>
> > >
>
> > > > > --- In PolySix@yahoogroups.com, "hansomchaam"
>
><hansomchaam@y...>
>
> > >
>
> > > > > wrote:
>
> > >
>
> > > > > >
>
> > >
>
> > > > > > Hello,
>
> > >
>
> > > > > > Again here is a polysix with the "no sound at all" problem.
>
> > >
>
> > > > > > When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1
>
> > >
>
> > > > there
>
> > >
>
> > > > > is a
>
> > >
>
> > > > > > constant pattern but not a 0.5 V/oct. Keystrokes has no
>
>effect
>
> > >
>
> > > > at
>
> > >
>
> > > > > all,
>
> > >
>
> > > > > > processor 8049 gives signals on DB0..DB8. Also no output on
>
> > >
>
> > >gate
>
> > >
>
> > > > > 0...3
>
> > >
>
> > > > > > = pin 15,10,7,2 ic 5 on keystroke.
>
> > >
>
> > > > > > Does anyone has suggestions.
>
> > >
>
> > > > > > Please help me, I look forward to hear the nice sound again.
>
> > >
>
> > > > > > Thans,
>
> > >
>
> > > > > > Han.
>
> > >
>
> > > > > >
>
> > >
>
> > > > >
>
> > >
>
> > > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >\ufffd\ufffd YAHOO! GROUPS LINKS
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >\ufffd\ufffd \ufffdVisit your group "PolySix" on the web.
>
> > >\ufffd
>
> > >\ufffd\ufffd \ufffdTo unsubscribe from this group, send an email to:
>
> > >\ufffdPolySix-unsubscribe@yahoogroups.com
>
> > >\ufffd
>
> > >\ufffd\ufffd \ufffdYour use of Yahoo! Groups is subject to the Yahoo! Terms of
>
>Service.
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> > >
>
> >
>
> > _________________________________________________________________
>
> > FREE pop-up blocking with the new MSN Toolbar \ufffd get it now!
>
> > http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
>
> >
>
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>
>
>
>
>
>
>
>
>
>
>
>
>
>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>   YAHOO! GROUPS LINKS
>
>
>
>
>   \ufffdVisit your group "PolySix" on the web.
>\ufffd
>   \ufffdTo unsubscribe from this group, send an email to:
>\ufffdPolySix-unsubscribe@yahoogroups.com
>\ufffd
>   \ufffdYour use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
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>

_________________________________________________________________
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Hello,
Still no sound, every chip has his power, setup from tape seems to 
work correctly (bank 1..8 lit up) so I think the problem is somewher 
on KLM366 (new prod). No gate signal on pin 15 ic5, also no 0..3,5 v 
on pin 1 ic9 so what can I do......?
--- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> wrote:
>
> Thanks, I'll try that
> 
> 
> >From: "lnz2166" <lnz2166@y...>
> >Reply-To: PolySix@yahoogroups.com
> >To: PolySix@yahoogroups.com
> >Subject: [PolySix] Re: Polysix no sound
> >Date: Tue, 06 Dec 2005 06:59:25 -0000
> >
> >
> >
> >
> >
> >This might sound trivial but is your power supply output all in
> >
> >check. In addition have you checked the the solder pads on the 
power
> >
> >connectors. I had and issue with one poly6 where the 15v solder 
pad
> >
> >on the connector was lifted. Also do a sanity check and make sure 
you
> >
> >chips are all getting proper voltages. Check old crows site for a
> >
> >scanned service manual.
> >
> >
> >
> >http://www.oldcrows.net/
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >--- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> 
wrote:
> >
> > >
> >
> > > I have a similar problem. Does anyone have a scanned service 
manual
> >
> >I can
> >
> > > get emailed? Greatly appreciated
> >
> > >
> >
> > >
> >
> > > >From: "gil_we" <gil_we@y...>
> >
> > > >Reply-To: PolySix@yahoogroups.com
> >
> > > >To: PolySix@yahoogroups.com
> >
> > > >Subject: [PolySix] Re: Polysix no sound
> >
> > > >Date: Mon, 05 Dec 2005 08:56:38 -0000
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >I think the service manual have this information...
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >--- In PolySix@yahoogroups.com, "hansomchaam" 
<hansomchaam@y...>
> >
> > > >
> >
> > > >wrote:
> >
> > > >
> >
> > > > >
> >
> > > >
> >
> > > > > Thanks for reply, I fixed the battery problem as described.
> >
> > > >
> >
> > > > > I checked (again) all connections/signals with an 
oscilloscoop.
> >
> > > >
> >
> > > > > I don't see any output, also no gate signals when key-
stroke on
> >
> >ic5
> >
> > > >
> >
> > > > > KLM-366.
> >
> > > >
> >
> > > > > What shape must be on TP2 KLM367?
> >
> > > >
> >
> > > > > Thanks for your help.
> >
> > > >
> >
> > > > > Han
> >
> > > >
> >
> > > > > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> 
wrote:
> >
> > > >
> >
> > > > > >
> >
> > > >
> >
> > > > > > How are the main voltages ? Has the battery leaked ?
> >
> > > >
> >
> > > > > >
> >
> > > >
> >
> > > > > >
> >
> > > >
> >
> > > > > > --- In PolySix@yahoogroups.com, "hansomchaam"
> >
> ><hansomchaam@y...>
> >
> > > >
> >
> > > > > > wrote:
> >
> > > >
> >
> > > > > > >
> >
> > > >
> >
> > > > > > > Hello,
> >
> > > >
> >
> > > > > > > Again here is a polysix with the "no sound at all" 
problem.
> >
> > > >
> >
> > > > > > > When I measure with oscilloscoop on KLM366 (new) ic 9 
pin 1
> >
> > > >
> >
> > > > > there
> >
> > > >
> >
> > > > > > is a
> >
> > > >
> >
> > > > > > > constant pattern but not a 0.5 V/oct. Keystrokes has no
> >
> >effect
> >
> > > >
> >
> > > > > at
> >
> > > >
> >
> > > > > > all,
> >
> > > >
> >
> > > > > > > processor 8049 gives signals on DB0..DB8. Also no 
output on
> >
> > > >
> >
> > > >gate
> >
> > > >
> >
> > > > > > 0...3
> >
> > > >
> >
> > > > > > > = pin 15,10,7,2 ic 5 on keystroke.
> >
> > > >
> >
> > > > > > > Does anyone has suggestions.
> >
> > > >
> >
> > > > > > > Please help me, I look forward to hear the nice sound 
again.
> >
> > > >
> >
> > > > > > > Thans,
> >
> > > >
> >
> > > > > > > Han.
> >
> > > >
> >
> > > > > > >
> >
> > > >
> >
> > > > > >
> >
> > > >
> >
> > > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
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Hello,
Every suggestion from everyone given to me (thanks) I have tried but 
still no sound.
The problem seems to be in the 8048 processor on KLM367. The 
outputsignal on pin 19 (DB7) has his pattern but some levels are 
higher than + 5 volt, it looks like an open line (not terminated), 
when I pull down it (10 k) it's gone but why??
So I'm thinking on replacing the processor and asking is this still 
for sale somewhere (or replacement).
Please give me suggestions (where to buy).
Thanks,
Han.
--- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> wrote:
>
> Thanks, I'll try that
> 
> 
> >From: "lnz2166" <lnz2166@y...>
> >Reply-To: PolySix@yahoogroups.com
> >To: PolySix@yahoogroups.com
> >Subject: [PolySix] Re: Polysix no sound
> >Date: Tue, 06 Dec 2005 06:59:25 -0000
> >
> >
> >
> >
> >
> >This might sound trivial but is your power supply output all in
> >
> >check. In addition have you checked the the solder pads on the 
power
> >
> >connectors. I had and issue with one poly6 where the 15v solder 
pad
> >
> >on the connector was lifted. Also do a sanity check and make sure 
you
> >
> >chips are all getting proper voltages. Check old crows site for a
> >
> >scanned service manual.
> >
> >
> >
> >http://www.oldcrows.net/
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >--- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> 
wrote:
> >
> > >
> >
> > > I have a similar problem. Does anyone have a scanned service 
manual
> >
> >I can
> >
> > > get emailed? Greatly appreciated
> >
> > >
> >
> > >
> >
> > > >From: "gil_we" <gil_we@y...>
> >
> > > >Reply-To: PolySix@yahoogroups.com
> >
> > > >To: PolySix@yahoogroups.com
> >
> > > >Subject: [PolySix] Re: Polysix no sound
> >
> > > >Date: Mon, 05 Dec 2005 08:56:38 -0000
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >I think the service manual have this information...
> >
> > > >
> >
> > > >
> >
> > > >
> >
> > > >--- In PolySix@yahoogroups.com, "hansomchaam" 
<hansomchaam@y...>
> >
> > > >
> >
> > > >wrote:
> >
> > > >
> >
> > > > >
> >
> > > >
> >
> > > > > Thanks for reply, I fixed the battery problem as described.
> >
> > > >
> >
> > > > > I checked (again) all connections/signals with an 
oscilloscoop.
> >
> > > >
> >
> > > > > I don't see any output, also no gate signals when key-
stroke on
> >
> >ic5
> >
> > > >
> >
> > > > > KLM-366.
> >
> > > >
> >
> > > > > What shape must be on TP2 KLM367?
> >
> > > >
> >
> > > > > Thanks for your help.
> >
> > > >
> >
> > > > > Han
> >
> > > >
> >
> > > > > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> 
wrote:
> >
> > > >
> >
> > > > > >
> >
> > > >
> >
> > > > > > How are the main voltages ? Has the battery leaked ?
> >
> > > >
> >
> > > > > >
> >
> > > >
> >
> > > > > >
> >
> > > >
> >
> > > > > > --- In PolySix@yahoogroups.com, "hansomchaam"
> >
> ><hansomchaam@y...>
> >
> > > >
> >
> > > > > > wrote:
> >
> > > >
> >
> > > > > > >
> >
> > > >
> >
> > > > > > > Hello,
> >
> > > >
> >
> > > > > > > Again here is a polysix with the "no sound at all" 
problem.
> >
> > > >
> >
> > > > > > > When I measure with oscilloscoop on KLM366 (new) ic 9 
pin 1
> >
> > > >
> >
> > > > > there
> >
> > > >
> >
> > > > > > is a
> >
> > > >
> >
> > > > > > > constant pattern but not a 0.5 V/oct. Keystrokes has no
> >
> >effect
> >
> > > >
> >
> > > > > at
> >
> > > >
> >
> > > > > > all,
> >
> > > >
> >
> > > > > > > processor 8049 gives signals on DB0..DB8. Also no 
output on
> >
> > > >
> >
> > > >gate
> >
> > > >
> >
> > > > > > 0...3
> >
> > > >
> >
> > > > > > > = pin 15,10,7,2 ic 5 on keystroke.
> >
> > > >
> >
> > > > > > > Does anyone has suggestions.
> >
> > > >
> >
> > > > > > > Please help me, I look forward to hear the nice sound 
again.
> >
> > > >
> >
> > > > > > > Thans,
> >
> > > >
> >
> > > > > > > Han.
> >
> > > >
> >
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> >
> > > >PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >
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I think it is a standard part for simple diy circuits, the ones 
students usually build. You should be able to find it at a local 
electronics shop I think


--- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...> 
wrote:
>
> Hello,
> Every suggestion from everyone given to me (thanks) I have tried 
but 
> still no sound.
> The problem seems to be in the 8048 processor on KLM367. The 
> outputsignal on pin 19 (DB7) has his pattern but some levels are 
> higher than + 5 volt, it looks like an open line (not terminated), 
> when I pull down it (10 k) it's gone but why??
> So I'm thinking on replacing the processor and asking is this still 
> for sale somewhere (or replacement).
> Please give me suggestions (where to buy).
> Thanks,
> Han.
> --- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> wrote:
> >
> > Thanks, I'll try that
> > 
> > 
> > >From: "lnz2166" <lnz2166@y...>
> > >Reply-To: PolySix@yahoogroups.com
> > >To: PolySix@yahoogroups.com
> > >Subject: [PolySix] Re: Polysix no sound
> > >Date: Tue, 06 Dec 2005 06:59:25 -0000
> > >
> > >
> > >
> > >
> > >
> > >This might sound trivial but is your power supply output all in
> > >
> > >check. In addition have you checked the the solder pads on the 
> power
> > >
> > >connectors. I had and issue with one poly6 where the 15v solder 
> pad
> > >
> > >on the connector was lifted. Also do a sanity check and make 
sure 
> you
> > >
> > >chips are all getting proper voltages. Check old crows site for a
> > >
> > >scanned service manual.
> > >
> > >
> > >
> > >http://www.oldcrows.net/
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >--- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> 
> wrote:
> > >
> > > >
> > >
> > > > I have a similar problem. Does anyone have a scanned service 
> manual
> > >
> > >I can
> > >
> > > > get emailed? Greatly appreciated
> > >
> > > >
> > >
> > > >
> > >
> > > > >From: "gil_we" <gil_we@y...>
> > >
> > > > >Reply-To: PolySix@yahoogroups.com
> > >
> > > > >To: PolySix@yahoogroups.com
> > >
> > > > >Subject: [PolySix] Re: Polysix no sound
> > >
> > > > >Date: Mon, 05 Dec 2005 08:56:38 -0000
> > >
> > > > >
> > >
> > > > >
> > >
> > > > >
> > >
> > > > >
> > >
> > > > >
> > >
> > > > >I think the service manual have this information...
> > >
> > > > >
> > >
> > > > >
> > >
> > > > >
> > >
> > > > >--- In PolySix@yahoogroups.com, "hansomchaam" 
> <hansomchaam@y...>
> > >
> > > > >
> > >
> > > > >wrote:
> > >
> > > > >
> > >
> > > > > >
> > >
> > > > >
> > >
> > > > > > Thanks for reply, I fixed the battery problem as 
described.
> > >
> > > > >
> > >
> > > > > > I checked (again) all connections/signals with an 
> oscilloscoop.
> > >
> > > > >
> > >
> > > > > > I don't see any output, also no gate signals when key-
> stroke on
> > >
> > >ic5
> > >
> > > > >
> > >
> > > > > > KLM-366.
> > >
> > > > >
> > >
> > > > > > What shape must be on TP2 KLM367?
> > >
> > > > >
> > >
> > > > > > Thanks for your help.
> > >
> > > > >
> > >
> > > > > > Han
> > >
> > > > >
> > >
> > > > > > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> 
> wrote:
> > >
> > > > >
> > >
> > > > > > >
> > >
> > > > >
> > >
> > > > > > > How are the main voltages ? Has the battery leaked ?
> > >
> > > > >
> > >
> > > > > > >
> > >
> > > > >
> > >
> > > > > > >
> > >
> > > > >
> > >
> > > > > > > --- In PolySix@yahoogroups.com, "hansomchaam"
> > >
> > ><hansomchaam@y...>
> > >
> > > > >
> > >
> > > > > > > wrote:
> > >
> > > > >
> > >
> > > > > > > >
> > >
> > > > >
> > >
> > > > > > > > Hello,
> > >
> > > > >
> > >
> > > > > > > > Again here is a polysix with the "no sound at all" 
> problem.
> > >
> > > > >
> > >
> > > > > > > > When I measure with oscilloscoop on KLM366 (new) ic 9 
> pin 1
> > >
> > > > >
> > >
> > > > > > there
> > >
> > > > >
> > >
> > > > > > > is a
> > >
> > > > >
> > >
> > > > > > > > constant pattern but not a 0.5 V/oct. Keystrokes has 
no

> > >
> > >effect
> > >
> > > > >
> > >
> > > > > > at
> > >
> > > > >
> > >
> > > > > > > all,
> > >
> > > > >
> > >
> > > > > > > > processor 8049 gives signals on DB0..DB8. Also no 
> output on
> > >
> > > > >
> > >
> > > > >gate
> > >
> > > > >
> > >
> > > > > > > 0...3
> > >
> > > > >
> > >
> > > > > > > > = pin 15,10,7,2 ic 5 on keystroke.
> > >
> > > > >
> > >
> > > > > > > > Does anyone has suggestions.
> > >
> > > > >
> > >
> > > > > > > > Please help me, I look forward to hear the nice sound 
> again.
> > >
> > > > >
> > >
> > > > > > > > Thans,
> > >
> > > > >
> > >
> > > > > > > > Han.
> > >
> > > > >
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> > > > >PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
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>

Hi,

I do not want to discouorage you, but I do not believe that it is
the KLM-367's CPU.  This does only the programmer.  You can check
it very easily:
1) If you have an oscilloscope, put one probe to TP4 and trigger
    on this signal. There should be a narrow pulse about every 20msec.
    The other probe connect to TP2. Obtain GND at TP3.
    On TP2 you can see the multiplexed control voltages coming out of
    the programmer CPU. Now turn knobs on the control panel and you see
    a corresponding bar moving up and down between -5 and +5V.
2) If you do not have an oscilloscope you can measure on CN05 (green
    wires to KLM-366) single control voltages. The connector contacts
    are labeled on the PCB, e.g. EG INT is pin10. Moving knobs on the
    control panel should result in a moving corresponding control
    voltage -5 ..+5V.

If this does work then IC22 (8048 CPU) is OK. If not then you may want
to go for a new CPU, which can be difficult because you need a correctly
programmed CPU. Either you watch out for a cannibalised Polysix or you
get a 8748, which is the EPROM version of the chip. This can be really
difficult as it is very outdated. Nowadays people make their homebrew
micro stuff with PICs or the like. Then you have to have the programming
file a possiblity to program it. So before going through all this and
then finding out that it was not the reason it is worth to look a bit
deeper into it and check for other causes...
As I know from repairing some battery-leakage victims, IC31 is the first
candidate to be replaced. It acts as a data bus buffer and all the data
is passing through it.
An even more simple check of functionality of IC22 CPU is whether it is
possible to change patches in the sense that the correct LEDs within
the PATCH an BANK buttons come up.
If yes then IC22 is OK.
If no then first check for correct CPU clock and RST signals (perform
RESET adjustment as given in the service manual).

If you have no sound at all for no obvious reason, check the Tape Enable
(nTE) signal, which comes from the TAPE ENABLE switch, disables the
overall VCA via IC5 and IC35 and holds the voices' gate latches (IC4,
IC5 on *KLM-366*) in reset state.

Good luck!

Johannes



hansomchaam wrote:

> Hello,
> Every suggestion from everyone given to me (thanks) I have tried but 
> still no sound.
> The problem seems to be in the 8048 processor on KLM367. The 
> outputsignal on pin 19 (DB7) has his pattern but some levels are 
> higher than + 5 volt, it looks like an open line (not terminated), 
> when I pull down it (10 k) it's gone but why??
> So I'm thinking on replacing the processor and asking is this still 
> for sale somewhere (or replacement).
> Please give me suggestions (where to buy).
> Thanks,
> Han.
> --- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> wrote:
> 
>>Thanks, I'll try that
>>
>>
>>
>>>From: "lnz2166" <lnz2166@y...>
>>>Reply-To: PolySix@yahoogroups.com
>>>To: PolySix@yahoogroups.com
>>>Subject: [PolySix] Re: Polysix no sound
>>>Date: Tue, 06 Dec 2005 06:59:25 -0000
>>>
>>>
>>>
>>>
>>>
>>>This might sound trivial but is your power supply output all in
>>>
>>>check. In addition have you checked the the solder pads on the 
> 
> power
> 
>>>connectors. I had and issue with one poly6 where the 15v solder 
> 
> pad
> 
>>>on the connector was lifted. Also do a sanity check and make sure 
> 
> you
> 
>>>chips are all getting proper voltages. Check old crows site for a
>>>
>>>scanned service manual.
>>>
>>>
>>>
>>>http://www.oldcrows.net/
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>--- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> 
> 
> wrote:
> 
>>>>I have a similar problem. Does anyone have a scanned service 
> 
> manual
> 
>>>I can
>>>
>>>
>>>>get emailed? Greatly appreciated
>>>
>>>>>From: "gil_we" <gil_we@y...>
>>>
>>>>>Reply-To: PolySix@yahoogroups.com
>>>
>>>>>To: PolySix@yahoogroups.com
>>>
>>>>>Subject: [PolySix] Re: Polysix no sound
>>>
>>>>>Date: Mon, 05 Dec 2005 08:56:38 -0000
>>>
>>>>>I think the service manual have this information...
>>>
>>>>>--- In PolySix@yahoogroups.com, "hansomchaam" 
> 
> <hansomchaam@y...>
> 
>>>>>wrote:
>>>
>>>>>>Thanks for reply, I fixed the battery problem as described.
>>>
>>>>>>I checked (again) all connections/signals with an 
> 
> oscilloscoop.
> 
>>>>>>I don't see any output, also no gate signals when key-
> 
> stroke on
> 
>>>ic5
>>>
>>>
>>>>>>KLM-366.
>>>
>>>>>>What shape must be on TP2 KLM367?
>>>
>>>>>>Thanks for your help.
>>>
>>>>>>Han
>>>
>>>>>>--- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> 
> 
> wrote:
> 
>>>>>>>How are the main voltages ? Has the battery leaked ?
>>>
>>>>>>>--- In PolySix@yahoogroups.com, "hansomchaam"
>>>
>>><hansomchaam@y...>
>>>
>>>>>>>wrote:
>>>
>>>>>>>>Hello,
>>>
>>>>>>>>Again here is a polysix with the "no sound at all" 
> 
> problem.
> 
>>>>>>>>When I measure with oscilloscoop on KLM366 (new) ic 9 
> 
> pin 1
> 
>>>>>>there
>>>
>>>>>>>is a
>>>
>>>>>>>>constant pattern but not a 0.5 V/oct. Keystrokes has no
>>>
>>>effect
>>>
>>>
>>>>>>at
>>>
>>>>>>>all,
>>>
>>>>>>>>processor 8049 gives signals on DB0..DB8. Also no 
> 
> output on
> 
>>>>>gate
>>>
>>>>>>>0...3
>>>
>>>>>>>>= pin 15,10,7,2 ic 5 on keystroke.
>>>
>>>>>>>>Does anyone has suggestions.
>>>
>>>>>>>>Please help me, I look forward to hear the nice sound 
> 
> again.
> 
>>>>>>>>Thans,
>>>
>>>>>>>>Han.
>>>
>>>>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
>>>
>>>>>   YAHOO! GROUPS LINKS
>>>
>>>>>    Visit your group "PolySix" on the web.
>>>
>>>>> 
>>>
>>>>>    To unsubscribe from this group, send an email to:
>>>
>>>>> PolySix-unsubscribe@yahoogroups.com
>>>
>>>>> 
>>>
>>>>>    Your use of Yahoo! Groups is subject to the Yahoo! Terms 
> 
> of
> 
>>>Service.
>>>
>>>
> _________________________________________________________________
> 
>>>>FREE pop-up blocking with the new MSN Toolbar \ufffd get it now!
>>>
>>>>http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>  YAHOO! GROUPS LINKS
>>>
>>>
>>>
>>>
>>>   Visit your group "PolySix" on the web.
>>> 
>>>   To unsubscribe from this group, send an email to:
>>> PolySix-unsubscribe@yahoogroups.com
>>> 
>>>   Your use of Yahoo! Groups is subject to the Yahoo! Terms of 
> 
> Service.
> 
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>_________________________________________________________________
>>Is your PC infected? Get a FREE online computer virus scan from 
> 
> McAfee\ufffd 
> 
>>Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?
> 
> cid=3963
> 
> 
> 
> 
> 
> 
> 
> 
> 
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6 
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
>

Hi,
Great!! That's good information, I'll do the tests with my scope and 
let you know,
thanks,
Han.
--- In PolySix@yahoogroups.com, Johannes Hausensteiner <johau@g...> 
wrote:
>
> Hi,
> 
> I do not want to discouorage you, but I do not believe that it is
> the KLM-367's CPU.  This does only the programmer.  You can check
> it very easily:
> 1) If you have an oscilloscope, put one probe to TP4 and trigger
>     on this signal. There should be a narrow pulse about every 
20msec.
>     The other probe connect to TP2. Obtain GND at TP3.
>     On TP2 you can see the multiplexed control voltages coming out 
of
>     the programmer CPU. Now turn knobs on the control panel and 
you see
>     a corresponding bar moving up and down between -5 and +5V.
> 2) If you do not have an oscilloscope you can measure on CN05 
(green
>     wires to KLM-366) single control voltages. The connector 
contacts
>     are labeled on the PCB, e.g. EG INT is pin10. Moving knobs on 
the
>     control panel should result in a moving corresponding control
>     voltage -5 ..+5V.
> 
> If this does work then IC22 (8048 CPU) is OK. If not then you may 
want
> to go for a new CPU, which can be difficult because you need a 
correctly
> programmed CPU. Either you watch out for a cannibalised Polysix or 
you
> get a 8748, which is the EPROM version of the chip. This can be 
really
> difficult as it is very outdated. Nowadays people make their 
homebrew
> micro stuff with PICs or the like. Then you have to have the 
programming
> file a possiblity to program it. So before going through all this 
and
> then finding out that it was not the reason it is worth to look a 
bit
> deeper into it and check for other causes...
> As I know from repairing some battery-leakage victims, IC31 is the 
first
> candidate to be replaced. It acts as a data bus buffer and all the 
data
> is passing through it.
> An even more simple check of functionality of IC22 CPU is whether 
it is
> possible to change patches in the sense that the correct LEDs 
within
> the PATCH an BANK buttons come up.
> If yes then IC22 is OK.
> If no then first check for correct CPU clock and RST signals 
(perform
> RESET adjustment as given in the service manual).
> 
> If you have no sound at all for no obvious reason, check the Tape 
Enable
> (nTE) signal, which comes from the TAPE ENABLE switch, disables the
> overall VCA via IC5 and IC35 and holds the voices' gate latches 
(IC4,
> IC5 on *KLM-366*) in reset state.
> 
> Good luck!
> 
> Johannes
> 
> 
> 
> hansomchaam wrote:
> > Hello,
> > Every suggestion from everyone given to me (thanks) I have tried 
but 
> > still no sound.
> > The problem seems to be in the 8048 processor on KLM367. The 
> > outputsignal on pin 19 (DB7) has his pattern but some levels are 
> > higher than + 5 volt, it looks like an open line (not 
terminated), 
> > when I pull down it (10 k) it's gone but why??
> > So I'm thinking on replacing the processor and asking is this 
still 
> > for sale somewhere (or replacement).
> > Please give me suggestions (where to buy).
> > Thanks,
> > Han.
> > --- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> 
wrote:
> > 
> >>Thanks, I'll try that
> >>
> >>
> >>
> >>>From: "lnz2166" <lnz2166@y...>
> >>>Reply-To: PolySix@yahoogroups.com
> >>>To: PolySix@yahoogroups.com
> >>>Subject: [PolySix] Re: Polysix no sound
> >>>Date: Tue, 06 Dec 2005 06:59:25 -0000
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>This might sound trivial but is your power supply output all in
> >>>
> >>>check. In addition have you checked the the solder pads on the 
> > 
> > power
> > 
> >>>connectors. I had and issue with one poly6 where the 15v solder 
> > 
> > pad
> > 
> >>>on the connector was lifted. Also do a sanity check and make 
sure 
> > 
> > you
> > 
> >>>chips are all getting proper voltages. Check old crows site for 
a

> >>>
> >>>scanned service manual.
> >>>
> >>>
> >>>
> >>>http://www.oldcrows.net/
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>--- In PolySix@yahoogroups.com, "FRANK SPANO" <fspa8724@m...> 
> > 
> > wrote:
> > 
> >>>>I have a similar problem. Does anyone have a scanned service 
> > 
> > manual
> > 
> >>>I can
> >>>
> >>>
> >>>>get emailed? Greatly appreciated
> >>>
> >>>>>From: "gil_we" <gil_we@y...>
> >>>
> >>>>>Reply-To: PolySix@yahoogroups.com
> >>>
> >>>>>To: PolySix@yahoogroups.com
> >>>
> >>>>>Subject: [PolySix] Re: Polysix no sound
> >>>
> >>>>>Date: Mon, 05 Dec 2005 08:56:38 -0000
> >>>
> >>>>>I think the service manual have this information...
> >>>
> >>>>>--- In PolySix@yahoogroups.com, "hansomchaam" 
> > 
> > <hansomchaam@y...>
> > 
> >>>>>wrote:
> >>>
> >>>>>>Thanks for reply, I fixed the battery problem as described.
> >>>
> >>>>>>I checked (again) all connections/signals with an 
> > 
> > oscilloscoop.
> > 
> >>>>>>I don't see any output, also no gate signals when key-
> > 
> > stroke on
> > 
> >>>ic5
> >>>
> >>>
> >>>>>>KLM-366.
> >>>
> >>>>>>What shape must be on TP2 KLM367?
> >>>
> >>>>>>Thanks for your help.
> >>>
> >>>>>>Han
> >>>
> >>>>>>--- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> 
> > 
> > wrote:
> > 
> >>>>>>>How are the main voltages ? Has the battery leaked ?
> >>>
> >>>>>>>--- In PolySix@yahoogroups.com, "hansomchaam"
> >>>
> >>><hansomchaam@y...>
> >>>
> >>>>>>>wrote:
> >>>
> >>>>>>>>Hello,
> >>>
> >>>>>>>>Again here is a polysix with the "no sound at all" 
> > 
> > problem.
> > 
> >>>>>>>>When I measure with oscilloscoop on KLM366 (new) ic 9 
> > 
> > pin 1
> > 
> >>>>>>there
> >>>
> >>>>>>>is a
> >>>
> >>>>>>>>constant pattern but not a 0.5 V/oct. Keystrokes has no
> >>>
> >>>effect
> >>>
> >>>
> >>>>>>at
> >>>
> >>>>>>>all,
> >>>
> >>>>>>>>processor 8049 gives signals on DB0..DB8. Also no 
> > 
> > output on
> > 
> >>>>>gate
> >>>
> >>>>>>>0...3
> >>>
> >>>>>>>>= pin 15,10,7,2 ic 5 on keystroke.
> >>>
> >>>>>>>>Does anyone has suggestions.
> >>>
> >>>>>>>>Please help me, I look forward to hear the nice sound 
> > 
> > again.
> > 
> >>>>>>>>Thans,
> >>>
> >>>>>>>>Han.
> >>>
> >>>>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>>
> >>>>>   YAHOO! GROUPS LINKS
> >>>
> >>>>>    Visit your group "PolySix" on the web.
> >>>
> >>>>> 
> >>>
> >>>>>    To unsubscribe from this group, send an email to:
> >>>
> >>>>> PolySix-unsubscribe@yahoogroups.com
> >>>
> >>>>> 
> >>>
> >>>>>    Your use of Yahoo! Groups is subject to the Yahoo! Terms 
> > 
> > of
> > 
> >>>Service.
> >>>
> >>>
> > _________________________________________________________________
> > 
> >>>>FREE pop-up blocking with the new MSN Toolbar – get it now!
> >>>
> >>>>http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>  YAHOO! GROUPS LINKS
> >>>
> >>>
> >>>
> >>>
> >>>   Visit your group "PolySix" on the web.
> >>> 
> >>>   To unsubscribe from this group, send an email to:
> >>> PolySix-unsubscribe@yahoogroups.com
> >>> 
> >>>   Your use of Yahoo! Groups is subject to the Yahoo! Terms of 
> > 
> > Service.
> > 
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>_________________________________________________________________
> >>Is your PC infected? Get a FREE online computer virus scan from 
> > 
> > McAfee® 
> > 
> >>Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?
> > 
> > cid=3963
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6 
> > Yahoo! Groups Links
> > 
> > 
> > 
> >  
> > 
> > 
> > 
> >
>

I found out the 4556D on the panel board (369) is an oamp for the
volume..Gil said those get down often..so check this one..

Hope it might help.

Gregor

>
> I think the service manual have this information...
> 
> --- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...> 
> wrote:
> >
> > Thanks for reply, I fixed the battery problem as described.
> > I checked (again) all connections/signals with an oscilloscoop.
> > I don't see any output, also no gate signals when key-stroke on ic5 
> > KLM-366. 
> > What shape must be on TP2 KLM367?
> > Thanks for your help.
> > Han
> > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
> > >
> > > How are the main voltages ? Has the battery leaked ?
> > > 
> > > 
> > > --- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...> 
> > > wrote:
> > > >
> > > > Hello,
> > > > Again here is a polysix with the "no sound at all" problem.
> > > > When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1 
> > there 
> > > is a 
> > > > constant pattern but not a 0.5 V/oct. Keystrokes has no effect 
> > at 
> > > all, 
> > > > processor 8049 gives signals on DB0..DB8. Also no output on 
> gate 
> > > 0...3 
> > > > = pin 15,10,7,2 ic 5 on keystroke.
> > > > Does anyone has suggestions.
> > > > Please help me, I look forward to hear the nice sound again.
> > > > Thans,
> > > > Han.
> > > >
> > >
> >
>

The 4xxx are very cheap to get, I'd personally replace any suspective 
one, be careful with the unsoldering process


--- In PolySix@yahoogroups.com, "Gregor Quade" <u3dreal@y...> wrote:
>
> I found out the 4556D on the panel board (369) is an oamp for the
> volume..Gil said those get down often..so check this one..
> 
> Hope it might help.
> 
> Gregor
> >
> > I think the service manual have this information...
> > 
> > --- In PolySix@yahoogroups.com, "hansomchaam" <hansomchaam@y...> 
> > wrote:
> > >
> > > Thanks for reply, I fixed the battery problem as described.
> > > I checked (again) all connections/signals with an oscilloscoop.
> > > I don't see any output, also no gate signals when key-stroke on 
ic5 
> > > KLM-366. 
> > > What shape must be on TP2 KLM367?
> > > Thanks for your help.
> > > Han
> > > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
> > > >
> > > > How are the main voltages ? Has the battery leaked ?
> > > > 
> > > > 
> > > > --- In PolySix@yahoogroups.com, "hansomchaam" 
<hansomchaam@y...> 
> > > > wrote:
> > > > >
> > > > > Hello,
> > > > > Again here is a polysix with the "no sound at all" problem.
> > > > > When I measure with oscilloscoop on KLM366 (new) ic 9 pin 1 
> > > there 
> > > > is a 
> > > > > constant pattern but not a 0.5 V/oct. Keystrokes has no 
effect 

> > > at 
> > > > all, 
> > > > > processor 8049 gives signals on DB0..DB8. Also no output on 
> > gate 
> > > > 0...3 
> > > > > = pin 15,10,7,2 ic 5 on keystroke.
> > > > > Does anyone has suggestions.
> > > > > Please help me, I look forward to hear the nice sound again.
> > > > > Thans,
> > > > > Han.
> > > > >
> > > >
> > >
> >
>

Hello,
After fixing the battry problem there was still no sound so I got 
into complex research.
Thanks to Johannes Hausensteiner who helped me step by step by 
interpreting pictures of my measured signals the problem is located.
With a little bit of shame I admit that the problem was simply..... 
ALL of the keyboard keys are bad, more than 5 kohm when pressing so 
I have to clean them as on old-crows site.
Thanks everyone for the helpfull tips.
Han.

--- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
>
> The 4xxx are very cheap to get, I'd personally replace any 
suspective 
> one, be careful with the unsoldering process
> 
> 
> --- In PolySix@yahoogroups.com, "Gregor Quade" <u3dreal@y...> 
wrote:
> >
> > I found out the 4556D on the panel board (369) is an oamp for the
> > volume..Gil said those get down often..so check this one..
> > 
> > Hope it might help.
> > 
> > Gregor
> > >
> > > I think the service manual have this information...
> > > 
> > > --- In PolySix@yahoogroups.com, "hansomchaam" 
<hansomchaam@y...> 
> > > wrote:
> > > >
> > > > Thanks for reply, I fixed the battery problem as described.
> > > > I checked (again) all connections/signals with an 
oscilloscoop.
> > > > I don't see any output, also no gate signals when key-stroke 
on 
> ic5 
> > > > KLM-366. 
> > > > What shape must be on TP2 KLM367?
> > > > Thanks for your help.
> > > > Han
> > > > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
> > > > >
> > > > > How are the main voltages ? Has the battery leaked ?
> > > > > 
> > > > > 
> > > > > --- In PolySix@yahoogroups.com, "hansomchaam" 
> <hansomchaam@y...> 
> > > > > wrote:
> > > > > >
> > > > > > Hello,
> > > > > > Again here is a polysix with the "no sound at all" 
problem.
> > > > > > When I measure with oscilloscoop on KLM366 (new) ic 9 
pin 1 
> > > > there 
> > > > > is a 
> > > > > > constant pattern but not a 0.5 V/oct. Keystrokes has no 
> effect 
> > > > at 
> > > > > all, 
> > > > > > processor 8049 gives signals on DB0..DB8. Also no output 
on 
> > > gate 
> > > > > 0...3 
> > > > > > = pin 15,10,7,2 ic 5 on keystroke.
> > > > > > Does anyone has suggestions.
> > > > > > Please help me, I look forward to hear the nice sound 
again.

> > > > > > Thans,
> > > > > > Han.
> > > > > >
> > > > >
> > > >
> > >
> >
>