Please help me repair my Maxon OD-9

[guitup too]

I picked a Maxon OD-9 pedal a few weeks ago. Great pedal by the way. About a week ago it stopped working. The LED lights up and it passes signal through when bypassed, but when I switch the pedal on I get no sound. It is this way on battery or power supply. I opened it up and don't see anything obvious.
Any ideas?

 

[blackba]

Could be the 8 pin op amp. I had an op amp go out on a Marshall guv nor clone and it did exactly what am you are describing.

 

[guitup too]

Is that jr4558 or whatever chip?

 

[guitup too]

It was a loose connection on the op amp. Fixed.
Thank you blackba.

 

[blackba]

awesome, glad you got it working.