That it's overheating is a sign that its possible your heat sync. should be recoated, or you have fan bearing or switch problems.

Good Luck,

N.

[quote|machead3]That it's overheating is a sign that its possible your heat sync. should be recoated, or you have fan bearing or switch problems. Good Luck, N.[/quote]

Download iStat, install it and check the fan reading and the processor temperature. Let us know what you see...

http://www.islayer.com/apps/istatmenus/

[quote|lemerise]Download iStat, install it and check the fan reading and the processor temperature. Let us know what you see... http://www.islayer.com/apps/istatmenus/[/quote]

iStat downloaded. Shows HD capacity remaining but can't get the sensor to measure temp or check fan. Kind of frustrating but I am not very clever when it comes to these things. thanks

[quote|gravyusa]iStat downloaded. Shows HD capacity remaining but can't get the sensor to measure temp or check fan. Kind of frustrating but I am not very clever when it comes to these things. thanks[/quote]

Quite a few of the older Macs did not have the fan sensors in them. My 12" iBook didn't, but the 12" PowerBook did. If the fan is not running, don't use it unless you are testing a repair or you stand a chance of damaging it. If you know the fan is not spinning, I'd go ahead and replace the fan. They are normally inexpensive, and not an overly difficult repair. Before doing the repair, you might check and see if you happened to get something lodged in the fan. I've seen that happen (rare, but it has happened) and would save the expense. Also check to make sure there is nothing else obviously wrong.

Any circuits that are blackened, capacitors that are bulging or popped, and other things like that are what to look for.

Good luck!

[quote|Sarabian]Quite a few of the older Macs did not have the fan sensors in them. My 12" iBook didn't, but the 12" PowerBook did. If the fan is not running, don't use it unless you are testing a repair or you stand a chance of damaging it. If you know the fan is not spinning, I'd go ahead and replace the fan. They are normally inexpensive, and not an overly difficult repair. Before doing the repair, you might check and see if you happened to get something lodged in the fan. I've seen that happen (rare, but it has happened) and would save the expense. Also check to make sure there is nothing else obviously wrong. Any circuits that are blackened, capacitors that are bulging or popped, and other things like that are what to look for. Good luck![/quote]

hai there

Recently i bought a secondhand Powerbook G4 1,67 Ghz: i knew it was in a bad state. the screen did not work, it had no HD, no sound. But on an external monitor i saw that the powerbook was working. Well, nice so far. But after 5 minutes or so it suddenly stopped and went to sleep. I think it is a fan problem, and indeed: they did not work. (it could also be a DC-In/Sound board prob of course....)

My question: is there a way to test the fans e.g. by hooking em up to an AAA battery or something like that, and which of the four wires should i connect to that battery?

Anybody out there who has experienced something like this. Any help is appreciated.

Luuk Sollie, The Netherlands

(parts for a powerbook are hard to get here..)

[quote|Luuk]hai there Recently i bought a secondhand Powerbook G4 1,67 Ghz: i knew it was in a bad state. the screen did not work, it had no HD, no sound. But on an external monitor i saw that the powerbook was working. Well, nice so far. But after 5 minutes or so it suddenly stopped and went to sleep. I think it is a fan problem, and indeed: they did not work. (it could also be a DC-In/Sound board prob of course....) My question: is there a way to test the fans e.g. by hooking em up to an AAA battery or something like that, and which of the four wires should i connect to that battery? Anybody out there who has experienced something like this. Any help is appreciated. Luuk Sollie, The Netherlands (parts for a powerbook are hard to get here..)[/quote]