Status report: I've rebuilt the power supply. This was done after the following steps: Open PS and remove the bad rectifer bridge and shorted 24,000MFd cap. Vacuum out all the decomposed foam. Put boards (all but core) and regulator board in dishwasher and dried them in the oven. Reassembled and tested power supply in stages. Working. Replaced three fans. No I have the system up and running save for one bit that is stuck (when displaying MD). The display bit is stuck as test programs run verifying it's a front pannel problem. It's bit 1 and only with the switch in the MD position. So far this is good success considering the heaviest test gear used is a multimeter. Also that I don't have a print set for 8E. Allison