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ok then, its a buzz, not a hom. Coming out of the speakers. I can hear the main transformer buzzing as well, 220W cast in toroid (mechanically buzzing that is). Even when there is no load. It went quiet, when I put it on the floor, but it buzzes when its on a metal plate. Even when there is nothing connected to the outputs. All I found is DC on the AC line
https://www.diyaudio.com/forums/solid-state/39895-transformer-making-noise-how-cure-3.html
Here is some PCB board on ebay, there is a schematic with it too (image attached). I guess its worth it (the ebay thing), there was a humbuster 3 that did the same thing for USD299 and same ingredients.
https://www.ebay.com.au/itm/PCB-for...251217?hash=item1ead0bcf51:g:VecAAOxydgZTIInx
would a shield help? I tried earlier, put a metal beaker over it, did not help.
It draws 1.7 W or about 3 VA on idle, open outlets
https://www.diyaudio.com/forums/solid-state/39895-transformer-making-noise-how-cure-3.html
Here is some PCB board on ebay, there is a schematic with it too (image attached). I guess its worth it (the ebay thing), there was a humbuster 3 that did the same thing for USD299 and same ingredients.
https://www.ebay.com.au/itm/PCB-for...251217?hash=item1ead0bcf51:g:VecAAOxydgZTIInx
would a shield help? I tried earlier, put a metal beaker over it, did not help.
It draws 1.7 W or about 3 VA on idle, open outlets
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