pdk972

I have a similar issue where my M5 will make normal sound when I change the setting to true bypass (as opposed to DSP bypass) and switch the effect off, but when it's engaged the volume drops dramatically. Distortion models don't drop volume as much. I just replaced those BAT54 diodes (D13, D14 on the M5), but the problem persists. Any insight would be much appreciated.

I've got the same issue with an M5. Worked fine. Left it on for several days. Got the blue screen. Reseated the ribbon cable, which fixed the blue scree issue, but now I have super low volume when the pedal is engaged or in DPS bypass mode. Regular volume in true bypass.