Trim Pot location for biasing - 50/CL

Amps & Cabs Pittbull 100/CL
1

My Pitbull 50/CL is out for a retube+rebias and the amp tech is saying there is no trim pot for biasing? It only has the EL34/6L6 selector switch? There’s no way this is true, right? Is the trim pot located somewhere unusual compared to other amps such that an experienced tech would not be able to easily find it? I don’t know enough about amp inner workings to know if Pittbull’s are unusual in design or if this tech is just giving me the runaround. Any help at all is very much appreciated. Thank you!

Model: G-50-CL
Serial #: BA960017

2

the trim pot on mine 50/cl is on the power tube board near the power tubes. it’s kind of close to the edge (back) of the board.

iirc the pot itself might be under the board, and there’s a hole going though the board which you can stick a screwdriver through to access the trim. I’m pretty sure it’s labeled on the silk screen.