Messages

Thanks madbean... Issue is resolved. I had a 100k resistor instead of 10k as intended at R22. Circuit sounds great and yes the transistors are socketed so now I can try the  5088's too! Thanks for a very cool forum and projects.
best regards

Mr Patton, you nailed it. R22 was 100k not 10k as intended. Although I used a DM on all resistors during assembly I obviously took a wrong reading. So much for populating the board slowly and carefully! The circuit works like a champ now. Many many thanks for your expertise.

I used all the listed values on the spreadsheet. No mods just C10 on offboard wiring (in anticipaton of the tone switch)
I am getting a blast of sound when guitar strings are plucked  then it decays to nothing. Transistors are BC550cbu so pinouts are reversed. trannies and diodes are socketed. checked all diodes and cap C14 for polarity issues.
I reflowed solder on all the pads hoping to remedy a cold joint. Voltage from a 9 volt battery reads 8.91 at the board. Here are the transistor measurements:
Q1    E 28.3 mv
        B .60 mv
        C 3.71 V
Q2    E 27.7 mv
        B .595 mv
        C 5.78 V
Q3    E  26.8 mv
        B .593 V
        C 3.60V
Q4    E .274 V
        B .81 V
        C .273 V   
Hope someone can point me in the right direction. I populated the board carefully and slowly, so I would be surprised if parts are switched somewhere.
Thanks all!

wanting to check voltages on my mayo/mudbunny build. trannys q3 and q4 have to be reversed or the sound is gated. I'm using BC 550c's which have a different pinout than the 2N5088 so Q1 and Q2 are installed flipped 180 degrees but the weird part is q3 and 4 are installed as per the silk screen indication on the board. The sound is pretty good but I fear something is a miss. What are the suggested voltages please.