Mesa Boogie D-800+

[Mars Amp Repair]

Hello folks,
Has anyone have any experience with this D-Class Bass amp? I kinda figure these are just board replacement level type items. This one is outputting what basically a square wave. No caps are bulging or leaking anything out. Looks pristine.
Thanx, glen

[The Dude]

You could check the effx send and run a tone into the effx return to see if clipping is preamp or power amp. Beyond that, I know nothing about the thing without a schematic.

[J M Fahey]

Hello folks,
Has anyone have any experience with this D-Class Bass amp? I kinda figure these are just board replacement level type items. This one is outputting what basically a square wave. No caps are bulging or leaking anything out. Looks pristine.
Thanx, glen

What voltage squarewave?
160Vpp or so is normal clipping, 4Vpp or anything way below expected level means something wrong.

Remember this amp has bridged/balanced out so NO speaker terminal must be grounded.

Clip scope ground to amp ground, measure either + or - speaker out, each will provide half total, so 80Vpp each, thatīs fine.

[Mars Amp Repair]

Thanx all. Mesa Boogie suggested just having cust send this to them. They apparently don't even have parts for this amp right now given the shipping issues. I suspect it may still be under warranty as the warr is 5yrs.
That works for me!