Q: iBook g4 1.33ghz fan blowing when turned off and wont boot

Hi!

My iBook has stopped charging. I thought it to be the little dc power board thing in the laptop, so I replaced it. After re-assembling the computer, putting in the battery caused the fan to start spinning fast, with the computer off and the battery nearly dead. And the computer will not turn on, even with the power cord connected. I have since replaced the old dc board, with no effect.

Has the logic board gone now?

Thanks!

iBook, Mac OS X (10.4.11)

Posted on May 16, 2012 5:45 PM

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Q: iBook g4 1.33ghz fan blowing when turned off and wont boot

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by Ronda Wilson,

Ronda Wilson May 16, 2012 7:36 PM in response to DreadPirate_Roberts
Level 8 (41,572 points)

May 16, 2012 7:36 PM in response to DreadPirate_Roberts

It would be my guess that something went awry in reassembly.

However, have you tried resetting the PMU?

http://support.apple.com/kb/HT1431?viewlocale=en_US

There's a possibility that could help.
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by DreadPirate_Roberts,

DreadPirate_Roberts May 17, 2012 7:36 AM in response to Ronda Wilson
Level 1 (0 points)

May 17, 2012 7:36 AM in response to Ronda Wilson

A PMU reset didn't do anything.
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by Knucklesmac,

Knucklesmac May 18, 2012 6:58 AM in response to DreadPirate_Roberts
Level 4 (2,225 points)

May 18, 2012 6:58 AM in response to DreadPirate_Roberts

Sounds to me like something has gone wrong with reassemble. When you push the power button while plugged into the mains, press the 'Caps Lock' key. If Caps Lock light comes on then there is power getting to the iBook.
Try apply some pressure using your palm to the right of the tracker pad.
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Q: iBook g4 1.33ghz fan blowing when turned off and wont boot

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by Ronda Wilson,

by DreadPirate_Roberts,

by Knucklesmac,

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