Autobahn aka MP Snow White autowah (Troubleshooting)

[brainbender]

Hi!

I'm having trouble with Autobahn. When I put a 78L05 in it's place, pedal sounds thin and have a pronounced envelope and high quack. Without it it seems to work ok (but just OK ), but it has a high volume boost and it seems it triggers somewhat strange. I checked the tripple checked the values of components, checked for bad solder joints and shorts with USB microscope and everything is good. Also, i swapped more then 10 78L05's and replaced the IC's with other, but nothing is changing.

Any sugestions? Thanks!

[jimilee]

Clear, up close pictures both sides of the board and off board wiring. Also, do you remember the jumpers?


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[brainbender]

My phone camera broke, so I can't post any photos. Everything with pcb is good, just as components. Weird... I can post some audio tomorrow. Offboard wiring is as always, Brian's method.

Btw. it sounds more like EHX Bassballs if that helps.