I had an RH fail. As far as I understand, any reset sequence or other steps you can take require the amp to come on, so there really isn't anything that would be advisable for an end user dealing with a dead one to do.
Assuming you're in the US, there are a handful of authorized service providers, and if you happen to be near one, you could have it checked out probably for some bench charge. That'd allow you to make a decision on whether or not it'd be worth the cost. Of course, you could also ship it, but your cost is going up out of the gate.
One of the authorized providers was very close to me, and I had a decent idea of what the likely problem with mine going in. It was well under $200, so I went with the repair. There are repairs that could outstrip the reasonable value of the amp to you, but the only way to know is to have it looked at.
I used TCE RS 210 and 212 cabinets in various combinations of 2 and 3 for a while and went through some heads.
The sound we're looking for and like is a very subjective thing, but for my tastes (which I'd describe myself as generally preferring a clean, smooth sound with some "warmth") one of the sounds I liked the best with the RS cabinets was paired with Ampeg heads. I had a PF500 and SVT7Pro and I liked both in terms of the sound. I had a Bugera Veyron (not sure without checking if it was the T or M), but it wasn't for me. I felt it lacked much of any character, kind of a stark, brittle sound (clean but pretty far from what I define as warm). To be fair, I didn't give it much of a try though...maybe kept it for a week if that, and it wouldn't surprise me for someone else to hear it completely differently.
That said, my experience with the RS cabinets is that they should be pretty middle-of-the-road and play well with most any amp if you like them...there aren't any magical or disastrous pairings that I'm aware of.
