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Fran
---In oberheim@yahoogroups.com, <andy.birko@gmail.com> wrote :
---In oberheim@yahoogroups.com, <andy.birko@gmail.com> wrote :
Tried to send a message before but it seems to have been lost.
Picked up a used M6R with a couple bad voices. Voice 2 was dead and just needed a re-seat of the CEM chip.
Voice 3 though - DCO 2 is all wonky. Its pitch is way high and doesn't track correctly at all. When changing the frequency through param 10 is generally trends in the right direction but any given value might be higher or lower than the one before.
I've probed around with a lousy scope a bit and it seems that pin 8 of the voice 3 CEM is at the wrong frequency. i.e. I checked pin 4 and 8 of all the chips and only pin 8 of voice 3 seems to be at the wrong frequency. As I said, it's a pretty lousy scope so info is limited.
Any thoughts on how to proceed?
Thanks in advance!
-Andy