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

[Stefan Kiltz]

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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