The Steel Guitar Forum

I have a ShoBud amplifier that I've been restoring. It's the one with all the sliders, the power meter on the right side, and the treble boost switches. I'm nearly finished and have ran into a problem. Neither of the treble boost switches work. Looking at various copies of schematics that I have, one indicates a .02 while others indicate a 180pf capacitor. My amplifier has .005's @ 1.4KV installed. They appear to be original equipment but at the same time, an over-kill. I'm assuming the problem lies in this area. Can someone tell me what the capacitors should be and how the circuit works?

Thanks in advance.

Carl