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
> >
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> >
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> >
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> >
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> >
> >
> >
>
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