I bought a Monolith M5100 5 channel amp, powers up no sound need help. I opened the cover and the fuse is soldered a clip on/off cable was disconnected to the toroidal power supply. I reconnected the cable and no success. There is no warranty from seller but will reimburse for repairs. Any suggestions of service centers or anyone wants to look at this amp Gene talked so highly about? I am in central Florida. Al 480-430-2704.
You need to try and get your money back. The seller must have known that this amp did not work, especially since it has been mucked about.
Monoprice have not published the circuit diagram, so no third party is going to be able to repair this amp. Monoprice offer warranty repairs only. That in itself is a disgrace, and far too common these days.
How did you purchase this amp, eBay or something else?
Unfortunately I fear you are a victim of fraud, with no recourse, unless it is available from the site your bought it from. If this was a private sale, I fear you have boat anchor that needs a one way trip to the recycling center.
I have worked on quite a few amps in my time, but "back in the day" circuits at least, and almost always a service manual was available with circuit diagrams and how to go about diagnosing and repairing problems. But those days are now in the distant past.
A big part of the problem is service mount components placed by robot. So repair is now generally by board replacement. There is generally only one board run and when there are no more boards, any nonfunctioning unit is a "boat anchor." That makes classy vintage gear worth very significant money, and rightly so.
