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Discussion about the Korg PolySix synthesizer

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Battery leak problem.

Battery leak problem.

2012-02-28 by Darijo Berkes

Hi,

I have tried to fix my Polysix that had a battery leak.
Before i started to repar the problem was that no button was working (for memory and tape) and allmost all the LEDs was turned on.

After I removed the battery and IC30 and IC31 I cleaned the board and started to repair the traces with new wires. And then I started to messaure the traces and everything seems to be looking fing.

I then installed the card in the Polysix again and turned it on. All buttons works fine and the only LEDs that are turned on are 7 and 8 if the Tape switch is in Tape Disable. If I change Tape Disable to Enable only LED 8 is always on.

I can save sounds, but only 4.
memory 1 and 5 save same sound 
memory 2 and 6 save same sound 
memory 3 and 7 save same sound 
memory 4 and 8 save same sound

Does anyone know and can help me with what trace should I look at to get rid of this problem?

I have followed oldcorwn.nets guide alot in this case.

Here's two photos of the LEDs

Tape Enable:
 http://www.flickr.com/photos/technogenic/6791701954/

Tape Disable:
http://www.flickr.com/photos/technogenic/6937820405

Reagards.
D

Sent from my iPad

RE: [PolySix] Battery leak problem.

2012-02-28 by Bruno BzH

Hi,
 you have probably your memory ic which is out of order, follow the traces and try to test it.

Regards
Bruno

To: PolySix@yahoogroups.com
Show quoted textHide quoted text
From: darijo@technogenic.se
Date: Tue, 28 Feb 2012 13:13:04 +0000
Subject: [PolySix] Battery leak problem.


















 



  


    
      
      
      Hi,



I have tried to fix my Polysix that had a battery leak.

Before i started to repar the problem was that no button was working (for memory and tape) and allmost all the LEDs was turned on.



After I removed the battery and IC30 and IC31 I cleaned the board and started to repair the traces with new wires. And then I started to messaure the traces and everything seems to be looking fing.



I then installed the card in the Polysix again and turned it on. All buttons works fine and the only LEDs that are turned on are 7 and 8 if the Tape switch is in Tape Disable. If I change Tape Disable to Enable only LED 8 is always on.



I can save sounds, but only 4.

memory 1 and 5 save same sound 

memory 2 and 6 save same sound 

memory 3 and 7 save same sound 

memory 4 and 8 save same sound



Does anyone know and can help me with what trace should I look at to get rid of this problem?



I have followed oldcorwn.nets guide alot in this case.



Here's two photos of the LEDs



Tape Enable:

 http://www.flickr.com/photos/technogenic/6791701954/



Tape Disable:

http://www.flickr.com/photos/technogenic/6937820405



Reagards.

D



Sent from my iPad

    
     

    
    






   		 	   		  

[Non-text portions of this message have been removed]

Re: [PolySix] Battery leak problem.

2012-02-28 by Darijo Berkes

What IC is the memory?

Sent from my iPad

28 feb 2012 kl. 15:15 skrev "Bruno BzH" <kroutshev@hotmail.com>:
Show quoted textHide quoted text
> 
> Hi,
> you have probably your memory ic which is out of order, follow the traces and try to test it.
> 
> Regards
> Bruno
> 
> To: PolySix@yahoogroups.com
> From: darijo@technogenic.se
> Date: Tue, 28 Feb 2012 13:13:04 +0000
> Subject: [PolySix] Battery leak problem.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
>      Hi,
> 
> 
> 
> I have tried to fix my Polysix that had a battery leak.
> 
> Before i started to repar the problem was that no button was working (for memory and tape) and allmost all the LEDs was turned on.
> 
> 
> 
> After I removed the battery and IC30 and IC31 I cleaned the board and started to repair the traces with new wires. And then I started to messaure the traces and everything seems to be looking fing.
> 
> 
> 
> I then installed the card in the Polysix again and turned it on. All buttons works fine and the only LEDs that are turned on are 7 and 8 if the Tape switch is in Tape Disable. If I change Tape Disable to Enable only LED 8 is always on.
> 
> 
> 
> I can save sounds, but only 4.
> 
> memory 1 and 5 save same sound 
> 
> memory 2 and 6 save same sound 
> 
> memory 3 and 7 save same sound 
> 
> memory 4 and 8 save same sound
> 
> 
> 
> Does anyone know and can help me with what trace should I look at to get rid of this problem?
> 
> 
> 
> I have followed oldcorwn.nets guide alot in this case.
> 
> 
> 
> Here's two photos of the LEDs
> 
> 
> 
> Tape Enable:
> 
> http://www.flickr.com/photos/technogenic/6791701954/
> 
> 
> 
> Tape Disable:
> 
> http://www.flickr.com/photos/technogenic/6937820405
> 
> 
> 
> Reagards.
> 
> D
> 
> 
> 
> Sent from my iPad
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
>                            
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> ------------------------------------
> 
> Yahoo! Groups Links
> 
> 
>

Re: [PolySix] Battery leak problem.

2012-02-28 by Takio Hosoya

Hi, everyone, I'm one of the newbies from Japan.
I answer this question.

Darijo,

IC 6 is that you want to find.
You can find it under a keyboard assembley on KLM-366B, beneath the IC
there is a blue socket.
This IC is 8089, a famous chip family of Intel 8048.
I don't know it is available in U.S., but you could still find second sauce ICs.
An example, my Polysix, made in Japan, uses second sauce 8089
manufactured by NEC.
The 2nd sauces are a little different from its original, memory
transfer speed etc.
If you hasitate to use second sauces, you'd better consult Datasheets,
or obtain another one that is used in your Polisix

Good luck!

Takio.H
Japan

RE: [PolySix] Battery leak problem.

2012-02-29 by backshall1

The patch RAM memory chip is IC 32 TC5514 APL-3 on the KLM367 board. It is
very close to the battery. The 8089 on the KLM-366 is the CPU/ROM for the
key assigner circuit as is not related to patch memory.

If you still have two LEDs turned on (7 and 8) when Tape is Disabled, then
you probably still have a problem with a bad trace in the data bus (D0-D7)
on the KLM-267 board going to CN10. This would also mess up the memory
access. 

 

Don Backshall

 

  _____
Show quoted textHide quoted text
From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of
Takio Hosoya
Sent: Tuesday, February 28, 2012 4:17 PM
To: PolySix@yahoogroups.com
Subject: Re: [PolySix] Battery leak problem.

 

  

Hi, everyone, I'm one of the newbies from Japan.
I answer this question.

Darijo,

IC 6 is that you want to find.
You can find it under a keyboard assembley on KLM-366B, beneath the IC
there is a blue socket.
This IC is 8089, a famous chip family of Intel 8048.
I don't know it is available in U.S., but you could still find second sauce
ICs.
An example, my Polysix, made in Japan, uses second sauce 8089
manufactured by NEC.
The 2nd sauces are a little different from its original, memory
transfer speed etc.
If you hasitate to use second sauces, you'd better consult Datasheets,
or obtain another one that is used in your Polisix

Good luck!

Takio.H
Japan





[Non-text portions of this message have been removed]

RE: [PolySix] Battery leak problem.

2012-02-29 by backshall1

Oops, I meant KLM-367 CN10 not KLM-267.

 

  _____
Show quoted textHide quoted text
From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of
backshall1
Sent: Wednesday, February 29, 2012 6:51 AM
To: PolySix@yahoogroups.com
Subject: RE: [PolySix] Battery leak problem.

 

  

The patch RAM memory chip is IC 32 TC5514 APL-3 on the KLM367 board. It is
very close to the battery. The 8089 on the KLM-366 is the CPU/ROM for the
key assigner circuit as is not related to patch memory.

If you still have two LEDs turned on (7 and 8) when Tape is Disabled, then
you probably still have a problem with a bad trace in the data bus (D0-D7)
on the KLM-267 board going to CN10. This would also mess up the memory
access. 

Don Backshall

_____ 

From: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com>
[mailto:PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> ] On
Behalf Of
Takio Hosoya
Sent: Tuesday, February 28, 2012 4:17 PM
To: PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> 
Subject: Re: [PolySix] Battery leak problem.

Hi, everyone, I'm one of the newbies from Japan.
I answer this question.

Darijo,

IC 6 is that you want to find.
You can find it under a keyboard assembley on KLM-366B, beneath the IC
there is a blue socket.
This IC is 8089, a famous chip family of Intel 8048.
I don't know it is available in U.S., but you could still find second sauce
ICs.
An example, my Polysix, made in Japan, uses second sauce 8089
manufactured by NEC.
The 2nd sauces are a little different from its original, memory
transfer speed etc.
If you hasitate to use second sauces, you'd better consult Datasheets,
or obtain another one that is used in your Polisix

Good luck!

Takio.H
Japan

[Non-text portions of this message have been removed]





[Non-text portions of this message have been removed]

Re: [PolySix] Battery leak problem.

2012-02-29 by Darijo Berkes

I have measured all th traces from CN10 to all IC that has a connection between D0 to D7 and all is fine.

Could it be that the IC 32 is fault ( no battery acid seems have touched it) or could it be that the R17 is the problem I haven't changed any of these two

Regards
Darijo

Sent from my iPad

29 feb 2012 kl. 12:51 skrev "backshall1" <backshall1@bellsouth.net<mailto:backshall1@bellsouth.net>>:



The patch RAM memory chip is IC 32 TC5514 APL-3 on the KLM367 board. It is
very close to the battery. The 8089 on the KLM-366 is the CPU/ROM for the
key assigner circuit as is not related to patch memory.

If you still have two LEDs turned on (7 and 8) when Tape is Disabled, then
you probably still have a problem with a bad trace in the data bus (D0-D7)
on the KLM-267 board going to CN10. This would also mess up the memory
access.

Don Backshall

_____
Show quoted textHide quoted text
From: PolySix@yahoogroups.com<mailto:PolySix%40yahoogroups.com> [mailto:PolySix@yahoogroups.com<mailto:PolySix%40yahoogroups.com>] On Behalf Of
Takio Hosoya
Sent: Tuesday, February 28, 2012 4:17 PM
To: PolySix@yahoogroups.com<mailto:PolySix%40yahoogroups.com>
Subject: Re: [PolySix] Battery leak problem.

Hi, everyone, I'm one of the newbies from Japan.
I answer this question.

Darijo,

IC 6 is that you want to find.
You can find it under a keyboard assembley on KLM-366B, beneath the IC
there is a blue socket.
This IC is 8089, a famous chip family of Intel 8048.
I don't know it is available in U.S., but you could still find second sauce
ICs.
An example, my Polysix, made in Japan, uses second sauce 8089
manufactured by NEC.
The 2nd sauces are a little different from its original, memory
transfer speed etc.
If you hasitate to use second sauces, you'd better consult Datasheets,
or obtain another one that is used in your Polisix

Good luck!

Takio.H
Japan

[Non-text portions of this message have been removed]





[Non-text portions of this message have been removed]

RE: [PolySix] Battery leak problem.

2012-02-29 by backshall1

Yes, the TC5514 could be faulty, but it would be best to check everything
else first. R17 can definitely cause problems on the data bus. It is eight
10k resistors in an array with one common pin. Measure each one to make sure
it is close to 10k. You really need an oscilloscope to look at the data
lines and make sure the digital signal looks clean. Otherwise you could end
up replacing a lot of parts to find the problem.

Don Backshall
Show quoted textHide quoted text
-----Original Message-----
From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of
Darijo Berkes
Sent: Wednesday, February 29, 2012 5:19 PM
To: <PolySix@yahoogroups.com>
Subject: Re: [PolySix] Battery leak problem.

I have measured all th traces from CN10 to all IC that has a connection
between D0 to D7 and all is fine.

Could it be that the IC 32 is fault ( no battery acid seems have touched it)
or could it be that the R17 is the problem I haven't changed any of these
two

Regards
Darijo

Sent from my iPad

29 feb 2012 kl. 12:51 skrev "backshall1"
<backshall1@bellsouth.net<mailto:backshall1@bellsouth.net>>:



The patch RAM memory chip is IC 32 TC5514 APL-3 on the KLM367 board. It is
very close to the battery. The 8089 on the KLM-366 is the CPU/ROM for the
key assigner circuit as is not related to patch memory.

If you still have two LEDs turned on (7 and 8) when Tape is Disabled, then
you probably still have a problem with a bad trace in the data bus (D0-D7)
on the KLM-267 board going to CN10. This would also mess up the memory
access.

Don Backshall

_____

From: PolySix@yahoogroups.com<mailto:PolySix%40yahoogroups.com>
[mailto:PolySix@yahoogroups.com<mailto:PolySix%40yahoogroups.com>] On Behalf
Of
Takio Hosoya
Sent: Tuesday, February 28, 2012 4:17 PM
To: PolySix@yahoogroups.com<mailto:PolySix%40yahoogroups.com>
Subject: Re: [PolySix] Battery leak problem.

Hi, everyone, I'm one of the newbies from Japan.
I answer this question.

Darijo,

IC 6 is that you want to find.
You can find it under a keyboard assembley on KLM-366B, beneath the IC
there is a blue socket.
This IC is 8089, a famous chip family of Intel 8048.
I don't know it is available in U.S., but you could still find second sauce
ICs.
An example, my Polysix, made in Japan, uses second sauce 8089
manufactured by NEC.
The 2nd sauces are a little different from its original, memory
transfer speed etc.
If you hasitate to use second sauces, you'd better consult Datasheets,
or obtain another one that is used in your Polisix

Good luck!

Takio.H
Japan

[Non-text portions of this message have been removed]





[Non-text portions of this message have been removed]



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