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