Cgs synth

Thanks! You've all made me feel a little better at least!
My first job out of highschool was building computers at a local build
to order PC company.
If we smoked a chip our boss would come by and say "uh oh.. looks like
someone let the gene out of the bottle. Better make a wish"

I dont know what my issue has been w/ these synth modules, though.
Ive built 5 of them in the past few weeks. A couple Ray Wilson
designs and now a couple of Ken's... I've only had about a 50%
success rate!! Ive been building various electronics kits for 15
years... and built the entire paia 9700 modular a few years ago.. not
a single problem w/ anything ever!!!! Until this batch..
Ive gotten them all except one to work, though.. And I have learnt a
HUGE amount in the process. Ive got to admit, I didn't learn a thing
from all the kits that just worked the first time I applied power.

I still have my doubts that the hum was coming from the power supply,
because the lowpass input was not working.. and Ive run a tun of
modules off this supply w/out problems.

I'll repair this fried IC and take it from there. I might be back for
more help w/ it though

Thanks
Scott