BeëlzeM said:
Where can I find instructions to discharge the voltages left in the amp? Or is it just a matter of leaving it unplugged for a while?
If you leave it unplugged for a while the capacitors should discharge across the resistors in the circuit.
But, just to be shure, before puting your hand into the circuit measure the voltages that may sill be there.
Hold one probe of your meter (ussually the black one) to the circuit's chassis (ussually the power supply's negative),
select a voltage range that is high enough (at least 500 VCC) and explore the circuit with the oter probe.
Be shure to measure all the high voltage points: Filter capacitors, tube anodes, etc
If you get any reading of 25V or more the circuit needs to be discharged before working on it.
NOTE: This is for a "simple" audio amplifier with voltages up to 250 V or so. For the
really high voltage and / or
high power circuits (like CRT in TV's, monitors or osciloscopes, microwave ovens, X ray machines, High power radio transmiters, etc) you should take aditional precautions.
If you don't know how to work safely inside one of theese, it's better (and safer
) to keep away