amp I bought 3 days ago not powering on - electrical engineer advice wanted

I bought a used Musical Fidelity A380 in good condition. Played it every day, worked fine.

Today it did not turn on. There were no sign of failure yesterday. Could it be a fuse or power supply?

parkergetdean01-29-2026 12:34am

audphile1 Details Discussions Posts This discussion Message User 7,882 posts 03-08-2026 at 07:08pm Copy Comment URL Report Comment Edit Delete Don’t hurt to list it and see what happens while you working the other channels in parallel.
jl35 Details Discussions Posts This discussion Message User 4,452 posts 03-08-2026 at 07:49pm Copy Comment URL Report Comment Edit Delete It's certainly cheap (or free) to list, and easy to decline a lowball offer...I've been surprised in the past how much a non-working item can sell for...
parkergetdean OP Details Discussions Posts This discussion Message User 1,040 posts 03-08-2026 at 07:55pm Copy Comment URL Report Comment Edit Delete @jl35 yes, my problem is, it IS working. Once it's turned on. But it is a pretty basic function.
dwest1023 Details Discussions Posts This discussion Message User 355 posts 03-08-2026 at 09:46pm Copy Comment URL Report Comment Edit Delete Its possible you could have a cold solder joint. If you have soldering iron you could try heating some of those joints around that power switch. When it does not come on you can use a pencil with eraser and push around on the joints and see if the amp will come on.
parkergetdean OP Details Discussions Posts This discussion Message User 1,040 posts 03-08-2026 at 10:15pm Copy Comment URL Report Comment Edit Delete @dwest1023 that's a great idea. Ever since I removed the top, it has always turned on. Now I have to hope that it would not. I can never win!