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keyshawn
Sep 14, 2008, 06:25 PM
hi,

I have an ibook g4, (released mid 2005, Tiger). I had my computer powered
up, shut the lid. An hour or 2 later, I opened it, and it was unresponsive and the screen was black. I pressed the power button for a few seconds and it booted up to the log-in screen. I walked away before logging in. When I returned, the computer was turned off, unresponsive. I tried to start it up again by pressing the power button and the ibook did not respond. No sounds made.
I tried to reset the battery by taking it out, putting back in, then
pressed the bottom of the case.

Then,
i reset the PMU, according to
http://support.apple.com/kb/HT1431?viewlocale=en_US

(which was done by:
1. If the computer is on, turn it off.
2. Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard.
3. Wait 5 seconds.
4. Press the Power button to restart the iBook computer.
)

This was no success either, iBook still has the same symptoms. In April, I had a very similar problem (computer would not respond or boot up). After calling up the Applecare support, my logic board was replaced under my iBook's Applecare warranty. The Applecare warranty expired in August, so I presume the replaced logic board is also no longer covered (the applecare terms and conditions is a bit vague, 2.d states the replacement parts just assumes the remaining coverage of the plan).

What steps should I take next ?

Thank you.



California
Sep 16, 2008, 02:30 PM
happened to a friend, same ibook.

Might be a capacitor.

Google around. Send it in. Best ibook made, so it's worth it to fix, imho.

keyshawn
Sep 17, 2008, 09:36 AM
happened to a friend, same ibook.

Might be a capacitor.

Google around. Send it in. Best ibook made, so it's worth it to fix, imho.

I've googled around a bit and a lot of people (including myself in April) have had similar symptoms to my iBook, have taken it to apple for repair, and the logic board was the culprit.

Thank you for the advice though !

California
Sep 17, 2008, 01:08 PM
Capacitors are on the logic board. My friend's fell off. It is a five dollar part.

keyshawn
Sep 18, 2008, 08:13 AM
Capacitors are on the logic board. My friend's fell off. It is a five dollar part.

Where online could I buy a capacitor at ? I briefly searched for it, and did not find any places.

thanks,
keyshawn

OrangeSVTguy
Sep 18, 2008, 12:38 PM
http://www.xlr8yourmac.com/tips/iBookG4_vreg_repair/ibookG4_vreg_repair.html

Same thing happened to my 12" 1.2ghz and my 1ghz 14". Same exact chip.