My recommendation is to get something like the Parasound 2250 V2 or the Halo A21 to hold its place and find a reputable repair technician and have them repair the ML. I'd imagine he has several of the ML amplifiers and it would be nice to keep them matching. Then, you can have the Parasound as a back-up amplifier if/when something happens down the road.
By the way, have you checked the fuse to make sure it isn't something trivial?
By the way, have you checked the fuse to make sure it isn't something trivial?