Break Street OD - Dead Silent (but Buffered Bypass Works)

[filthmunster]

Hi,

I'm getting zero output from the Break Street, however the buffer/bypass works ok.
Some measurements on the quad TL074 opamp:
pin 3 ˜4.38V
pin 10 ˜4.38V
pin 12 ˜0V...

If i measure on the Vref end of R8 i get 0V...
Noticed someone with the same problem in this thread https://forum.pedalpcb.com/threads/break-street-od-how-to-wire-for-tbp.321/

Anybody with a working Break Street OD that can confirm some voltages?

thanks in advance!

 

[okstateblues]

So you have an audio probe to poke around with on the audio path of the circuit? It may help until some other builders are able to chime in. It helped me quite a bit on a few of my builds this far.

 

[Mcknib]

All Vref points indicated on the schematic should read around half the power supply

Your Vref is from the voltage divider the junction of R101 (8K2) and 102 (10K) which from a 9v supply will give you around 4.9v

So all your op amp pins should read around half power supply voltage with the exception of pins 4 ground 0v and pin 8 power supply on the 4558 and pins 11 ground and 4 power supply on the 074

You're best to post some nice clear pictures of the front and back of the board and off board wiring so that it can be clearly traced

If you haven't already try reflowing the solder joints on R8