bigb

Thanks for this thread! My 6+ year old V1.7 PLM died a few weeks ago. It was always on a UPS, in a cool ambient temp environment, and we also have a whole house surge suppressor. I did always think that the PLM seemed to run warm. I replaced just C7 with a 100uf 50V generic cap I had laying around, and it jumped back to life. Here are the readings on the old C7, 10uF 35V cap: 140 ohm ESR 6.7 uF Vloss=18% (totally trashed) Here are readings of a new generic 6.8 uF 50v cap: 0.72 ohm ESR 7.5 uF Vloss=0.5% And here are readings from the the generic 100 uF 50v cap I put in: 0.73 ohm ESR 93 uF Vloss=1.1%