Blackstar HT-Dist Pedal - No Ouput

[pgorey]

I have to say, the interior of this pedal, though densely packed is super clean.  Nothing looks out of order upon physical inspection.  I am unfamiliar with tube circuits, but I drained what I think are the components holding voltage here can carefully disasembled so I could inspect the boards and tube.  Replaced the tube and tested with same result.  No output.  Bypass allows audio.  I have not powered up the unit outside of the case.  What is the safest way to keep away from the high voltage / shorting while tracing signal.  Should I leave this one alone?

[Kevin Mitchell]

You should be fine to probe it - just be cautious. Try to determine the direction of the audio signal before you poke around (tube and IC pinouts and so on). Since it's a preamp design running off of what I assume to be a SMPS B+ there shouldn't be much HV lingering in there.

I've audio probed a few amps without blowing myself up (okay I once forgot to drain the filter caps in a deluxe reverb - a lesson you should learn only once  )