I bought this amp at an auction so I have no idea of the prior history. It appears to have very little, if any, wear. I wonder if there might be some corrosion from simply sitting unused for a long period of time. Here are some things I have noticed:
A noticeable hum occurs when it is switched on. Changing out cables has had some effect but the hum persists, just quieter.
When switched off there is a loud pop.
The Mic/Inst channel seems to lack volume.
I have thought about dismantling the cabinet to take a look at the electronics. If there is some corrosion will it be obvious? What other things might I look at? I have only a limited amount of electronic knowledge.
Hi, have you connected it to an earthed socket ? … I have a new one and it hums out of the house on an ungrounded socket … and now he is very quiet…
I don’t know any more about it,…have fun with it
It may not be the amp you could have a ground loop caused by fluorescent lights or other electronics in the house. If you eliminate any amp problems and still have a buzz you can buy a filter for the plug. Do a search for Hum X.