Cheers man,
will try that, which of them fuses are likely candidates? I guess a
schematic (nah, probably not available for us merely mortals) or a
picture with locations of the fuses would support my venture greatly -
any hints as to where to look for them?
Ta
Stefan
On 15 Jan 2011, at 02:39, Hansel Chung wrote:
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
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