NAD 214 Power Amp Fault

[Bennyboyph]

The electric supply in my current house is pretty dodgy, bulbs keep blowing etc. Yesterday I was listening to a couple of cds at a quiet volume, when suddenly my NAD 214 power amp just switched off, with a click. Switched the amp off, then switched it back on, and only the red light came on, when normally after a short period of time the amp 'clicks' and a green light takes its place. No such luck. Have you people got any ideas as to what could be wrong?

Cheers!
Ben

 

[anatech]

Hi Ben,
Well, we know the power fuse is good - darn. What test equipment do you have?

At this point, disconnect the amp from everything. Let it sit to discharge caps. Remove the cover and look for some blown fuses.

-Chris

 

[Bennyboyph]

I've got a fairly bog standard digital multimeter and a soldering iron to fix the amp, so that's about it. I can't see any blown fuses inside. There is one fuse near to the front panel power switch, and that's it, other than a black box with DEC written on it, elsewhere in the circuit boards.

Ben

 

[anatech]

Hi Ben,
Time to start measuring DC offset voltages, supply voltages and bias currents to get an idea of what's going on. A schematic would help about now since you're getting into it.

-Chris