Archive of the former Yahoo!Groups mailing list: OldSynths

Hi everyone,

Thanks for the help so far.

I replaced several 301's in the ARP, and everything started working
perfectly except for one preset (Fuzz Guitar I) and the vibrato
circuit. I identified that an additional 301 (the pulse/saw mixer)
was the probable culprit, replaced that, and then the whole thing went
dead! Dead in a new way, though, because now it doesn't even make the
one low tone.

I've traced the voltage to the following probable cause: the octave
divider chip(s).

Does anyone think that this chip could have suddenly gone bad and
caused a complete dead unit? Or would there be different symptoms?

My other thought is that my fiddling around with the boards broke loose
a wire or something.
This was really heartbreaking, because for about five minutes, I had a
fully working unit!

Please continue to help if you can--I'll be here all day! ;-)

David