Korg Mono/Poly

it's the PCB that's corroded somehow -like the previous owner spilt a soft drink on it or something?

Soooo, is it possible to check these things using a DMM?  0_o  That's all I got.

thanks again,
chad





________________________________
From: Florian Anwander <fanwander@mnet-online.de>
To: korg_mono-poly@yahoogroups.com
Sent: Thu, May 27, 2010 8:39:38 PM
Subject: Re: [korg_mono-poly] ...and all of the sudden, no sound!

  
Hi Alan

>  From your description it sounds like you filter chip SSM2044 may have 
> gone. 
first he should check whether there is a signal at pin 1 (input) of the 
SSM2044
Also it is worth checking the four ICs 2033 at pin 8, 3 and 12 whether 
there is a signal.

> mean it seems that the rubber contact has corroded or the PCB contact? 
> You night find the rubber strips on ebay. same type as in the polysix 
> and another few keyboards.  as for finding a complete keyboard PCB that 
> might be more tricky.
check also http://www.oldcrows.net/~oldcrow/synth/korg/polysix/keyclean.html

If the contacts don't work ever, then maybe also some of the diodes in 
the keyboard matrix might have died.

Florian