SOLVED PRO 10 Blue low output

[Falterthethomist]

Hey guys, I have a Pro 10 Blue build with very low, and somewhat gated output, but I can't seem to find the issue.

I traced the signal path with an audio probe and everything seems fine until the feedback loop of the TL71. After R13 there is a significant signal loss which continues to pins 2 and 6 of the opamp and accordingly to the output pot. The signal going to pin3 of the Tl71 seems fine.

I triple checked the values of all the resistors and the caps there, but they should be ok. I also swapped the Tl71 with no difference.

Do you guys have any ideas? Or did you run into a similar problem?

Thanks.

I will send pics of the board asap.

 

[Falterthethomist]

Found the problem. One of the resistors had a red band instead of a brown one. Now it works perfectly. I think it is among my favorite BB style overdrives.