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Help with iBook G4 repair

post #1 of 2
Thread Starter 
I have this mac I am trying to repair. The customer said the computer was getting very hot and then shutting off when he used it. , so it basically sounds like it was overheating. I assumed it was clogged with dust so I took it apart and removed the fan/heatsink and to my suprise there is no dust at all. Now my best guess is to replace the fan/heatsink itself but I am not feeling very confident that it will solve the issue. The laptop is about 6 years old. The fan itself does not seem like there is anything wrong with it, when I spin it with my finger it moves easily.

The customer also said the laptop would turn off more quickly if he tried to tunr it on right after it shut off than it would if he waited for a while, further support the overheating hypothesis.

The heatsink does not use thermal paste, it has thermal pads and they are still soft and clean so I dont think they are causing any problems.

Do fans just go bad after time sometimes? Do the magnets wear down or something?

What else might cause this?
    
CPUMotherboardGraphicsRAM
i5 2500K @ 4.5 GA-P67A-UD3-B3 EVGA 570 8GB Gskill 1600mhz 
Hard DrivePower
1.5TB CORSAIR 850TX 
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CPUMotherboardGraphicsRAM
i5 2500K @ 4.5 GA-P67A-UD3-B3 EVGA 570 8GB Gskill 1600mhz 
Hard DrivePower
1.5TB CORSAIR 850TX 
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post #2 of 2
Thread Starter 
Also does anyone know if this laptop is supposed to have the fan spinning all the time or only when it heats up? When I turn on the computer the fan does not spin.
    
CPUMotherboardGraphicsRAM
i5 2500K @ 4.5 GA-P67A-UD3-B3 EVGA 570 8GB Gskill 1600mhz 
Hard DrivePower
1.5TB CORSAIR 850TX 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5 2500K @ 4.5 GA-P67A-UD3-B3 EVGA 570 8GB Gskill 1600mhz 
Hard DrivePower
1.5TB CORSAIR 850TX 
  hide details  
Reply
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