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

parkergetdean OP Details Discussions Posts This discussion Message User 1,036 posts 01-31-2026 at 05:05am Copy Comment URL Report Comment Edit Delete Wow! Thank you @gs5556 that’s very precise! @devinplombier I have a few busted amps, good enough to practice
mark200mph Details Discussions Posts This discussion Message User 842 posts 02-08-2026 at 01:39pm Copy Comment URL Report Comment Edit Delete George Meyer downtown la is service for musical fidelity. I was just there 20 pluss techs oodles of electronic eq I was lusting after. Might give them a call ask a tech.i love my musical fidelity 500kw 550kw and cd spinners.i love the varister sound.its a tube developed for military to last decades.
parkergetdean OP Details Discussions Posts This discussion Message User 1,036 posts 02-08-2026 at 10:31pm Copy Comment URL Report Comment Edit Delete thank you @mark200mph !
rocray Details Discussions Posts This discussion Message User 1,542 posts 02-12-2026 at 04:35pm Copy Comment URL Report Comment Edit Delete @parkergetdean, any updates on your amp?
parkergetdean OP Details Discussions Posts This discussion Message User 1,036 posts 02-12-2026 at 11:40pm Copy Comment URL Report Comment Edit Delete @rocray it turns on now 4 out of 5 times. maybe it was something behind the button. But your question prompted me to text my repair guy and have it checked out. The remote only works 50% of the time, maybe that can be fixed as well.