I have an AMS RMX-16 here that comes up scrambled on power-up. Someone gave it to me a while back, and it has been so long since I recorded with one I can't remember if they would still hold their own against modern units. Clearly the computer is not running. I do know that it will be a tough job though, I have a service manual and some of those parts will be tough to get if there is a problem with RAM or convertors. Perhaps the spares bin may be a better idea, but if anyone is familiar with them it would help to know the common faults with these units.