[sdiy] Polysix keys

[klosmon]

Hello-
I have replacements for the CPU chip and the voice board controller chip.
$30 each, including shipping.

~GMM
analogsynthservice.com


At 11:04 AM 1/22/2008, you wrote:

>Finally the sick polysix arrived today and upon first firing it up 
>it sure was acting strange. All of the patch select buttons were 
>constantly lit up, the LFO light was not flashing and various other 
>odd things. Strangely though all keys work fine, pitch and voice 
>assigning seems to be working fine. It's just doing random things 
>though, none of the front panel controls work and the settings of 
>the front panel controls seem to randomly change sometimes. The 
>arpeggiator and poly, unison switches work fine, as do the mod wheel 
>and bender.
>
>I opened it up expecting a furry pile of battery acid and tons of 
>damaged traces but I got a surprise:
>
>http://i270.photobucket.com/albums/jj89/Shudder11/missingcpu.jpg
>
>The IC22 cpu is missing! The battery has been removed and there is 
>virtually no leakage at all. Also note from the picture the 
>connectors between boards have been cut at one stage and carefully 
>resoldered. At some stage a bright spark crudely installed a 25 pin 
>d-sub on the back of the polysix although its not connected to 
>anything. It's fair to say from the condition of the keys 
>(completely covered in filth, lowest C is missing and there are 3 
>damaged from what looks like cigarette burns) this synth has seen 
>some action in its lifetime :)
>
>I cant complain considering the price I got it for. For the 
>replacement cpu I could get the midi upgrade kit that is still 
>available from Johannes Hausensteiner but I'm not sure I really need 
>all the extras that are added. I was planning a simpler (cheaper) 
>midi retrofit. Does anyone know a source for a replacement cpu? 
>Scott Rider says on his page he might be able to help but if anyone 
>here has one spare it would be great.
>
>
>
>----- Original Message ----- From: "Sean Ellis" <tensiontype at hotmail.com>
>To: <synth-diy at dropmix.xs4all.nl>
>Sent: Monday, January 14, 2008 8:35 PM
>Subject: [sdiy] Polysix keys
>
>
>>I am picking up a sick polysix that is missing a key and has some 
>>other unknown problems, probably due to battery leakage. Does 
>>anyone know a source for a replacement key?
>>
>>It's great to have Scott Rider's excellent polysix repair page 
>>(here: 
>>http://www.oldcrows.net/~oldcrow/synth/korg/polysix/index.html ), 
>>looks like I'll be needing it very soon :) Not sure if Scott is on 
>>this list but I'm curious about the missing page labeled "Give your 
>>Polysix a Korg PS3100-Style Triple resonant filter". Sounds very 
>>interesting but the schematics for the Polysix are a nightmare to read.
>>
>>
>>_______________________________________________
>>Synth-diy mailing list
>>Synth-diy at dropmix.xs4all.nl
>>http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
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