Vintage Synth Repair

in typical space cadet fashion, i had seated one of the opamps backwards. DUH. she is purring like a kitten now! sounds fantastic.


all opamps should have the little notchy thing. just the dot is too easy to mess up. 


--- In vintagesynthrepair@yahoogroups.com, "r_j_d_2.phila" <r_j_d_2.phila@...> wrote:
>
> hi folks, im wondering if anyone might provide some insight into repairing the reverb circuit in my 2600.
> 
> it was VERY noisy, so per mark vail's instructions in the "vintage synthesizers" book, i rewired the tank with shielded wire, and swapped the 6 LM301's on the reverb board for TLE2071's. these, at least as i can tell, are pinout equivalent(i removed the freq comp caps across pins 1-8 on all 6, and socketed them).
> 
> but now, the reverb SEND signal is not reaching the tank. if i push up the reverb faders, and physically tap the tank, i hear sound and can tell that the pickup portion is working, but the send from the VCA output is not. 
> 
> any leads? thanks for the help.
>