Peavey Valve King 112

[Jazz P Bass]

Received a PV VK112 that sounds terrible.

Found the bias voltage at -67 Vdc.
Mains current is 31 watts!
Scope shot showed severe crossover distortion.

I found R205 reads at 61K instead of 33K.
Color bands are correct for a 33K.
Replaced the resistor and all is fine.
Bias voltage is -52 Vdc. Mains current is 55 watts.

[Delta362]

Nice find! Makes me wonder if the resistor had been mismarked, or a previous amp failure may have given a hit to the bias voltage to make that resistor so far out of spec.

[Jazz P Bass]

I am at a loss to explain it.
It is a China unit.
I found an awful lot of resistor legs laid over & touching other traces (man I hate that).
The amp was purchased at a Guitar Center.
Knowing that it sounded like ass they gave the guy a deal. (Probably needs tubes!).
I hope this didn't leave the China factory like this.