That's possible. Usually when electrolytic capacitors are dying, they have some physical signs of stress or leakage. Take it out and take a look.
Since you have multiple CPU cards, might want to fix the GLOD first? (typically fuses) As for the heat, it's not likely a fuse would be involved in determining if it runs too hot or not. -Hansel On Nov 24, 2010, at 9:53 AM, Stefan Kiltz wrote: > Hiya people at the duolist, > long time lurker here with a question to all techies out there. I have two > Comets (bog-standard PPC603e 180MHz) not working anymore. Thought I fried the > CPU card with the first one. The second one worked fine all the way to me > putting it on a shelf for a year. After re-plugging the power, all I get is > the dreaded GLOD, followed by a faint (sort of rattling) noise originating > vom the power supply daughterboard. Thanks to Ralph Mawyer, who sold me one > of his 603e CPU cards, I can rule out a CPU failure. > Since working with electronics for quite some time (not professionally > though), I know that capacitors, in particular the electrolyte capacitors, > have a tendency to dry out and losing their capacity. Could it be, that the > big capacitors on the power supply daughter card may have gone faulty? > Second question would be if any of you people sees a chance to bring my > NewerTech G3 upgrades back to life - back in the olden day, the first 2400 > was my mainstay and I paid a lot of money for that NewerTech 240MHz G3. I > believe it ran too hot, though not seeing any signs of excessive heat on the > dye/heatsink plate. Maybe some sort of SMD fuse or resistore acting as one > needs to be replaced? > I'd really love to put them Comets back into action again, ideally with the > G3 upgrade, which seems to be resembling gold dust these days. > I'd really appreciate any tips or directions where to dig deeper. > TaRa > > Stefan > _______________________________________________ > DuoList mailing list > [email protected] > http://listserver.themacintoshguy.com/mailman/listinfo/duolist _______________________________________________ DuoList mailing list [email protected] http://listserver.themacintoshguy.com/mailman/listinfo/duolist
