G3 Will not power-up after power failure.

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iMac G3 Model M5521

Announced in October 1999.

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Barnett @gerimactric

Rep: 1

Posted: Apr 5, 2018

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G3 Will not power-up after power failure.

Nothing happens when I push start button on front of machine. Power source and connection is good.

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Unplug the machine, open it up, and remove the PRAM battery. Wait awhile (min 15 mins; I'd leave it that way for longer). Test the PRAM battery to make sure it's still good, or just replace it if you aren't sure since it's cheap enough.

While you're there, check the power supply for swelling caps and replace as necessary.

Put it all back together and try to power it up.

Apr 5, 2018 by Steve

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1 Answer

Unplug the machine, open it up, and remove the PRAM battery. Wait awhile (min 15 mins; I'd leave it that way for longer). Test the PRAM battery to make sure it's still good, or just replace it if you aren't sure since it's cheap enough.

While you're there, check the power supply for swelling caps and replace as necessary.

Put it all back together and try to power it up. — Steve