[DuoList] 2x 2400 GLOD after long time non-use

[Stefan Kiltz]

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