Archive of the former Yahoo!Groups mailing list: Korg Poly800/EX800 Users

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [korgpolyex] filter 2069D 4018 12db / 24db mod

From: <backshall1@...>
Date: 2016-06-11

It sounds like maybe you used pins 6 and 7 instead of 5 and 6, or maybe you used 5 and 6 but managed to short out 6 to 7, or something like that. Pin 7 is the noise generator output. If you are soldering directly to the pins on the chip, it would be easy to accidentally create a solder bridge from 6 to 7.
Don Backshall
 
Sent: Saturday, June 11, 2016 1:27 PM
Subject: [korgpolyex] filter 2069D 4018 12db / 24db mod
 
 

Hey guys,

I have a p800 mk1, my filter chip is a 2069D 4018 and not the 2069AD 5066 as shown in the modification photo in this group.  I tried it out but it just gave me white noise.  Did I miss something or does anyone know if it works with my chip model?  I can't find a schematic.

-Neil