ibook g4 freezing after minutes

issicus · issicus #1 (**permalink**)

02-19-2010, 11:11 PM

pretty sure its over heating. It can be used for about half an hour to an hour with g4fanconrol . with out g4fanconrol i would say about 10-20 minutes. any graphics intensive stuff seems to freeze it quicker.

I set g4fanconrol so the fan stays on.

when it freezes the screen locks up and the audio hick-ups .

I found some stuff about re-soldering or baking the logicboard (below). I dont think they are fixing the same problem. any ideas?

How to fix your broken G4 ibook motherboard | Macintosh How To

and

The ever popular iBook G4 Logic Board Issue... | Applefritter

pershingd · pershingd #2 (**permalink**)

02-20-2010, 08:49 PM

I just fixed the wife's iBook G4 the other day for the exact same problem. Your fan motor has died and is not running. I ordered a replacement fan from ifixit.com and followed their repair guide and had it fixed in less than an hour. Haven't had a problem since.

David

issicus · issicus #3 (**permalink**)

02-21-2010, 12:57 AM

im pretty sure there is only one fan inside an ibook. mine is running I can hear it.

Kevriano · Kevriano #4 (**permalink**)

02-21-2010, 02:40 AM

If the fans are working you'll hear them spin up on start up.
This is most likely a logic board issue (I've come across it before). The soldering fix is very good indeed. Worth doing for sure.
Download Temperature Monitor and run it for a while to see what temps you are running, and then report back.

Temperature Monitor 4.85 software download - Mac OS X - VersionTracker

sunspot · sunspot #5 (**permalink**)

02-25-2010, 09:54 PM

About two weeks ago it froze and I had to boot into safe mode to log in. Eventually that stopped working and I zeroed out the hard drive and tried to install Leopard but it would freeze every time. Tiger would install but would freeze after 5-25 minutes exactly like it did in Leopard (total lockup, doesn't go to black, just freezes).
I installed Leopard onto a Powerbook G4 and copied the disk image to the iBook G4 hard drive and use G4FanControl to keep it running.
The fan works perfectly, in fact I put in a new one because the old one sounded broken.
It must be overheating, but, the tolerance has been greatly reduced. If I go over 40 degrees (sensor 1) it will freeze and I have to reboot. In the past it would get much hotter than that and the fans still wouldn't come on.
It seems like a serious hardware issue. I suspect the graphics chips but really don't know. Please help!

issicus #1 (permalink)
Member Since: Jan 06, 2010 Posts: 4	02-19-2010, 11:11 PM pretty sure its over heating. It can be used for about half an hour to an hour with g4fanconrol . with out g4fanconrol i would say about 10-20 minutes. any graphics intensive stuff seems to freeze it quicker. I set g4fanconrol so the fan stays on. when it freezes the screen locks up and the audio hick-ups . I found some stuff about re-soldering or baking the logicboard (below). I dont think they are fixing the same problem. any ideas? How to fix your broken G4 ibook motherboard \| Macintosh How To and The ever popular iBook G4 Logic Board Issue... \| Applefritter Last edited by issicus; 02-20-2010 at 12:46 AM.
	QUOTE Thanks

Kevriano #4 (permalink)
Member Since: Jul 02, 2006 Location: Crawley, England Posts: 4,560 Mac Specs: 20" Intel iMac 2.4 Ghz/3G Ram/320HD, Snow Leopard. PBook G4, 1.5Ghz/1.5 Ram/250 HD, Leopard 10.5.6.	02-21-2010, 02:40 AM If the fans are working you'll hear them spin up on start up. This is most likely a logic board issue (I've come across it before). The soldering fix is very good indeed. Worth doing for sure. Download Temperature Monitor and run it for a while to see what temps you are running, and then report back. Temperature Monitor 4.85 software download - Mac OS X - VersionTracker Try my custom Mac Forums Search Engine: Mac Forums Google Search Please use the reputation system if you consider any help given useful (it's the little ✓/✘ on the left <---)
	QUOTE Thanks

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ibook g4 freezing after minutes

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pershingd #2 (permalink)
Member Since: Feb 10, 2010 Posts: 11 Mac Specs: MacBook Pro 2.16 ghz, 1GB RAM	02-20-2010, 08:49 PM I just fixed the wife's iBook G4 the other day for the exact same problem. Your fan motor has died and is not running. I ordered a replacement fan from ifixit.com and followed their repair guide and had it fixed in less than an hour. Haven't had a problem since. David
	QUOTE Thanks

sunspot #5 (permalink)
Member Since: Feb 21, 2010 Posts: 1	02-25-2010, 09:54 PM About two weeks ago it froze and I had to boot into safe mode to log in. Eventually that stopped working and I zeroed out the hard drive and tried to install Leopard but it would freeze every time. Tiger would install but would freeze after 5-25 minutes exactly like it did in Leopard (total lockup, doesn't go to black, just freezes). I installed Leopard onto a Powerbook G4 and copied the disk image to the iBook G4 hard drive and use G4FanControl to keep it running. The fan works perfectly, in fact I put in a new one because the old one sounded broken. It must be overheating, but, the tolerance has been greatly reduced. If I go over 40 degrees (sensor 1) it will freeze and I have to reboot. In the past it would get much hotter than that and the fans still wouldn't come on. It seems like a serious hardware issue. I suspect the graphics chips but really don't know. Please help!
	QUOTE Thanks

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