Hi everyone, thanks for replying so quickly.
Thanks John, yes it's on both channels. Matthew checked my voltages as a couple were slightly high but he was happy with everything. As for wiring, I was very careful and it worked well and very quietly for the first 5or6 hours.
Hi Greg, real name Rhoddy which is actually Scottish so no Welsh king I'm afraid A Stuart
. When I get a chance I'll reflow the power supply joints to eliminate that possibility.
I've looked at the transformer cables which i twisted pretty tightly, and tried moving them around with no effect.
The thing that gets me is that it's both channels and it was fine for a while, which makes me wonder if
as Greg suggests, it's the power supply. Could a faulty capacitor cause it?