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

@devinplombier I think you are on a good path. 

Yes, either way, something turns on. So, it should mean that the power switch is working. But somewhere down the line, the amp (selectors) stay dead. You keep saying "Protection Circuitry." which sounds very foreign to me, like a government office in Scotland. But I will just find it and rewire it (just kidding!)

@parkergetdean 

I used to live in SoCal. If I still did, I would give you a hand. 

As it stands, remote troubleshooting is not really an option unfortunately.

So, when the amp is on, it stays on forever unless you turn it off, right?

 

yes @devinplombier once it's on, it stays on. I found a good shop in Murietta. I will go there on Saturday hopefully. 

@parkergetdean ,

If they're soldered to that tiny board and we're working with no soldering experience, yeah maybe leave it to the pros. I'm guessing that tiny board is the soft start.