Mcintosh 402 Amp in protection mode


Bought an entire system of Mcintosh and B&W speakers so I have no history other than  the 402 amp that came in the purchase will power on but getting no sound or amplification.  I thought these amps were fairly bullet proof so any thoughts or experience on this would be helpful.  I assumed extensive repairs in my purchase price - so no surprises.
bulldog90

Showing 1 response by lalitk

@bulldog90,

Congrats on a wonderful system. What preamp you’re using? I used to own C2500 pre that has Output 1 and 2 buttons on front panels. Depending on which output your amp connected to, one of them needs to be ON (Red LED) for sound output.

Also, is the needles on your amp meters are stationary or waving? And don’t forget to unmute your preamp, the preamp always boots up with mute ON, it’s a built in safety function.

Hope this helps!