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Member Since: Jan 28, 2011
Posts: 3
nkear5 is on a distinguished road

nkear5 is offline
I recently purchased a non-working 20" iMac G4. The seller described the iMac as having a problem related to the logic board.

I re-assembled the iMac and plugged it in to see the problem for myself. After resetting the PMU, if I pressed the power button, the fan in the base would turn on. Nothing else happened. After a few minutes the fan would not power on either. If I put my ear near the screen or base, I can hear a faint, high-pitched electrical whine, which should indicate that power is being supplied to the computer.

Would you agree with the seller that the problem is likely to do with the logic board, or can you think of another problem? Would replacing the PRAM battery do any good? I am prepared to purchase a new logic board or power supply and am capable of installing it myself.

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