Tube Amp Archive

Even the cloth covered wires? They have shown no worse for wear

Ha found the second power tube rolling around in the back that's all it was.
Could still use some bench check out

Yes I know a variac should be involved
just dont want to start a small house fire.
I suppose there are rebuild kits out there. Any suggestions if needed?

Just had a client drop off a brown face with cream colored knobs Fender Bassman. Dying to plug it in and just turn it on. Don't know how long it has been dormant. Any suggestions on slowly powering it up on a proper resistive load?

Great tip. The clean channel doesn't sound as clean as I remember so good place to start.
Thanks

Schematic calls for 60mV at TP 30. Only able to get 54mV with pot wide open. Any suggestions? All settings are set to prescribed levels on schematic.

Now looking at the schematics the tip of jack is sent to ground with out a jack plugged in. The switchcraft jacks do not have the option to send tip to ground with out a plug inserted in at least one of them

Already replaced the jacks as one was bad so replaced them both with insulated switchcraft type

Loud hum with no input on a Fender Hot Rod Deville.
Plug in a guitar hum all but goes away. Put a scope on B+ point and there is AC on the B+ supply.
Bias cannot be adjusted past 50mV DC

Simply replace the electrolytics?