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?

parkergetdean

@parkergetdean 

Yes, get a dead audio component off craigslist for 10 or 15 bucks and fix it. That'll get your feet wet, but - if you're successful on your first try, there's no turning back and you'll have a new hobby :)

Keep us posted!

 

Looking at a schematic of the A300 and assuming the A308 is similar, the problem appears to be a bad thermistor downstream of the power switch. It is a $3 dollar part (Vishay SG27) and should require no more than a 1/2-hour of labor to replace.

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.