Beware of NAD M3 Fire Hazard


My $3k NAD M3 started shooting sparks out the top and burned the shelf that was 8" above. Luckily I was home and not sleeping or the house would have burned down. If anyone has one of these I advise them to unplug it when not in use. I took it to two different repair shops and they said it would be about $800 to just get it running and there may be board issues. They advised not to take the gamble. Anyone have any suggestions on what to do with it?
pwb

Showing 1 response by cakyol

Diodes usually fail open circuit, unless the heat is so bad that the entire junction completely melts.  The only way that could happen is if the AC supply surged tremendously.  But then again, if that happened, you would have noticed other stuff breaking connected to the AC.

Was there anything on top of the amplifier which could have fell in (even a strand of hair) and shorted something ?

It could simply be a bad capacitor, from the factory. Although very rare, these may still happen.