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Bad Dual G4/1GHz cpu... repair question.
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Fresh-Faced Recruit
Join Date: Mar 2007
Status:
Offline
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Is it possible to repair a non-working cpu? Are there certain components on the daughtercard that usually go bad? If so, can they be replaced?
I always see non-working processors selling on eB*y, sometimes for more than I would expect. Why do they command such prices?
Thanks!
 Regards from sunny Northern California,
Dick Shoulders
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Senior User
Join Date: Apr 2002
Location: Stockholm Sweden
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If the CP is dead its dead. If components on the CPU card are dead you "can" repair if you know what you are doing and are good at desolder and solder SMDs.
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Fresh-Faced Recruit
Join Date: Mar 2007
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When I tried to boot the Mac w/ this processor, a burning PCB smell emitted almost instantly, not from the daughtercard, but from the logic board. The smell seemed to be coming from the area next to the processor, near the edge of the Logic bd close to where the fan power connects.
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Forum Regular
Join Date: Feb 2007
Location: Brushton, New York (middle of nowhere)
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Originally Posted by dickshoulders 
When I tried to boot the Mac w/ this processor, a burning PCB smell emitted almost instantly, not from the daughtercard, but from the logic board. The smell seemed to be coming from the area next to the processor, near the edge of the Logic bd close to where the fan power connects.
If it is a logic board problem, then you are stuck without a paddle.
1) Did you reset your PMU/PRAM?
2) Could you have a bad capacitor?
If all else fails, then your logic board is probably RIP.
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The Mac Collection:
Power Mac G4 Sawtooth at 450MHz, Power Mac G4 Gigabit Ethernet at 400MHz, three Power Mac FW800's at 1.0GHz, MacBook Pro at 2.0GHz, my late father's G3 iMac at 350MHz, an iMac at 500MHz, a PowerBook G4 (12-inch VGA) and a PowerBook 170
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Fresh-Faced Recruit
Join Date: Mar 2007
Status:
Offline
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Nah... logic bd is still okay... using it now (w/ different processor, of course).
Bad cap on daughtercard or logic bd?
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