I can't see why this would be any more prone to CPU failure then the 2950, which is basically what it is. 2950 did have some failures, the first gen seemed to have more then the later revisions. But again, I don't think it was terrible, or unusually high. As for parts, it is entirely possible you would have to resort to a parts donor radio since the latest revision 2950 is quite different. Good thing is the radio is pretty popular so it wouldn't be impossible.
Personally I've always liked the radio, had a few over the years, and they always did well. I wouldn't hesitate to buy one right now if the price and condition were right....