i have a simple SE guitar amp that suddenly got very quiet. no buzzing or anything, just barely any output, overnight(worked one day, didn't the next). tube swapping doesn't help...if i crank it to 10 i can hear it, but of course it isn't really useable like this.
i looked briefly at the PCB and didn't notice any fried or bulging components. i'm thinking maybe simple corrosion at an input or output jack? anything else i might look for?
regards.
been busy the last few years and haven't been tinkering with amps at all. hope everyone is well