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MacBook Pro 15" 2.2ghz - Fans always on

Reply by namit

Hi all,

Just after getting fed up with my mac book pro because it was over heating at 70C and takes almost buns my lap off.

Have tried:

smcfan

Fan Control

CoolBookController

All where showing that fans where at 4000rpm and 60-70C cup and gpu.

So opened up mac and cleaned up cpu, gpu and put some thermal paste on it closed back up and put everything together.

Now temperature is running at 30-45C

BUT fans are running at 6000rpm and both are running, any ideas what can do or what component might have damaged or not plugged back in properly? Also something to note that i had just upgraded to Snow Leopard 1 week ago.

Also when I did Apple Hardware Test (AHT) comes back with 4SNS/1/40000000: TG0H-128.000, but can not get much from that. Same story in safe mode, deleted all bits of software could do. Rang apple care and they say its Thermal Sensor on hard disk, did not know there was one there.

Here is screen shot of temperatures all seams to be ok am i missing any? http://yfrog.com/2oscreenshot20091014at1...

Thanks

Reply reply by matthewfrey

4SNS/1/40000000: TG0H-128.000

Faulty GPU Heatsink thermal sensor - the only fix is a new logic board.

Reply reply by namit

No other way? if have opened mac is it still covered under apple care? and is there any way for them to know I opened it?

Thanks

Reply reply by namit

WWOOOO thank you for all your help, working again just temperature sensor in middle that popped out.

Reply reply by matthewfrey

Opps. Shame on me

Reply reply by Marcus Meisel

My Mac started to kernel panic after heavy graphics use, but otherwise worked perfektly. So I ran Apple Hardware Test out of curiosity and had the same error: 4SNS/1/40000000: TG0H but without the number.

I changed the thermal paste, ran the hardware test again, and error is gone.

Thanks guys!

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