James 1095 said:
Typically a too-large filter capacitance will trip a fuse or external circuit-breaker when the extra inrush current fills up the capacitor as it is first switched on. OP's symptoms take up to 3 minutes to trip them - suggests something cumulative, like heat buildup and/or ESR buildup in caps on the analog board. Weird that others haven't reported the same thing with Plus or other Compacts. Also defies probability that 7 machines would exhibit the same problem simultaneously.
Rick
Lower value filter caps sounds like a good thing to try. Not sure I'd recommend disconnecting entirely, though. Might you not get some electrical noise propagating inside the Mac, maybe affecting the CRT?
Typically a too-large filter capacitance will trip a fuse or external circuit-breaker when the extra inrush current fills up the capacitor as it is first switched on. OP's symptoms take up to 3 minutes to trip them - suggests something cumulative, like heat buildup and/or ESR buildup in caps on the analog board. Weird that others haven't reported the same thing with Plus or other Compacts. Also defies probability that 7 machines would exhibit the same problem simultaneously.
Rick