I started reading the first post. If it is true what the OP says, after 15/20 seconds when the capacitors are discharged the voltage disappears, he is detecting a DC voltage.
Why is everybody hunting for an AC leak?
If there is an AC leak, why did the OP detect the voltage disappear when the capacitors are discharged?
BTW 220V is voltage, not current.
I'll try to explain the situation better, which has now been definitively resolved with the bipolar button that intervenes on the two wires.
in practice, that type of connection that I had adopted intervened / acted with both voltage cables directly connected and through the board, with only one soldered wire (see photo) it interrupted the passage.
a solution that was perhaps wrong to position the switch in that way. although I'm not a dragon / expert in the matter, today thinking about it I think the button added like this with the double polarity is more correct.
in the past it was suspected that there was direct current - out of place / unexpected in the system and that could give those symptoms of hum to the transformer. something that was promptly put aside because I tried the amp in various 220V systems, but the hum remained.
what do you say?
in practice, that type of connection that I had adopted intervened / acted with both voltage cables directly connected and through the board, with only one soldered wire (see photo) it interrupted the passage.
a solution that was perhaps wrong to position the switch in that way. although I'm not a dragon / expert in the matter, today thinking about it I think the button added like this with the double polarity is more correct.
in the past it was suspected that there was direct current - out of place / unexpected in the system and that could give those symptoms of hum to the transformer. something that was promptly put aside because I tried the amp in various 220V systems, but the hum remained.
what do you say?
I think you solved it correctly by switching both mains wires instead of only the line wire and leaving the neutral connected.
BTW This type of switch is called Double Pole/Single Throw.
The single throw means only one on/off position, double pole means two switching contacts.
In short it is a DPST switch.
Jan
BTW This type of switch is called Double Pole/Single Throw.
The single throw means only one on/off position, double pole means two switching contacts.
In short it is a DPST switch.
Jan
