Hi
I have strange problem with my MK IVa-medium head. When I turn power switch to full power, the amp starts to buzz and sizzle, like a huge power generator. I can play with the full power, but that buzz stays as a background noise. When I turn to tweed power, everything is okay. The sound of amp is overally also a little muddier than before.
The buzzing sound seems to come from the huge power tranny next to power cable. I opened the amp and everything seemed okay. I have quite new tubes, so I don't believe that's the problem.
Any ideas? Amp is from 1992, so it could be, that tranny or the filter caps are goin' bad.
I have strange problem with my MK IVa-medium head. When I turn power switch to full power, the amp starts to buzz and sizzle, like a huge power generator. I can play with the full power, but that buzz stays as a background noise. When I turn to tweed power, everything is okay. The sound of amp is overally also a little muddier than before.
The buzzing sound seems to come from the huge power tranny next to power cable. I opened the amp and everything seemed okay. I have quite new tubes, so I don't believe that's the problem.
Any ideas? Amp is from 1992, so it could be, that tranny or the filter caps are goin' bad.