Common problem. Contact NAD they will sell you the new one to replace. LOL I'd get two if you want to keep the amp long term.
***WANTED*** NAD M25 Power Supply Board ***PLEASE HELP***
Searching for a replacement power supply board for a NAD M25 Masters Series amplifier. Preferably a 2nd generation redesign included with units manufactured in 2014 and after.
The 1st generation boards suffered premature failures - The protective wax applied during the manufacturing process ate into the board over time resulting in both open and short circuits.
Thanks,
-Aaron