Need help

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Need help

OK I need to hear from someone who has taken an ibook G4 apart and changed out the logic board. I sent mine into First Phase Technologies - they re-flowed my GPU in order to fix the shut down problem, which they did.

But....when I reassembled I noticed that there was a pad of some sort instead of thermal pasted between the CPU and the heat sink. Do these ibook use thermal paste or do they just use those pads in place of the paste. I did not see any evidence of thermal paste but I don't want to overheat this puppy.

Thanks in advance-
TS

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Sometimes thermal pads are us

Sometimes thermal pads are used in place of paste, usually when some adhesive strength (i.e. sticking the heatsink to the CPU instead of using a bracket) is needed. You'll be just fine.

Jon
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You'll be just fine assuming

You'll be just fine assuming the thermal pad isn't damaged. Quite often when the parts that a thermal pad is joining are separated, the pad is pulled to pieces, with bits remaining on on both surfaces. Unless one gets particularly lucky and things line up just right on reassembly, something is going to over lap and leave an air gap in there. The air gap is what the thermal paste and thermal pads are there to prevent. In most cases thermal pads are single use applications and must be removed and replaced if the parts are ever separated. If the pad on there came off whole, that's pretty great luck. I don't recall ever having one do it. I always have to break out the 91% IPA and clean up both surfaces and apply some compound.

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1000 thanks for the replys.

1000 thanks for the replys. Well first the pads looked perfect not a wrinkle. But I have been concerned because I downloaded "Temperature Monitor" and it looks like it's running kinda close to what they say is the limits. Also I bought a cooling pad and the Mac feels a lot cooler to the touch but the software still reads kinda high. Is "Temperature Monitor" reliable? How hot should some of the settings get before this thing starts to fry eggs? Just a wee bit paranoid here because I just got it fixed and saved a bunch not having to buy a new motherboard, so I kinda want keep things right!

ibook G4, 12 inch 1.2GHZ.

Thanks again-
Tom

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