Temp Sensor Problems?

[meowmix101]

Okay so I've got an older ThinkPad T60p 8744-J2U with the ATI FireGL graphics card, widescreen, etc. I recently cleaned it out and replaced the thermal pad they ship the thinkpads out with some AS5. Its been running awesome!

The only problem is that just this morning, it started to shut off randomly on me. Completely randomly. No graphics intense work, CPU intensive work, anything. Just stalking facebook. And when I tried to first start it up, all of the power/HDD/battery/charger light flashed on then just shut off again. I tried hitting the power button again, same result. So I leave it sit for a while. I come back to it later, it boots up. Its running for a while, and just to keep an eye on things and make sure its not a over heat issue, I open tpfancontrol (program that controls the thinkpad's fan speed and also shows various temperatures). As I was watching it, I noticed that the PWR heat sensor was WAY high for being PWR. Other times ive looked at that temperature its been in the high 30's - low 40's. This time it was up in the 70's! So instead of going back and doing things, I watched it for a bit. After a minute or so of watching it, within a few seconds the temperature sky rocketed to 100 degrees C and the laptop shut off! I felt around the laptop to see how hot it actually was, and there was no way any part of that laptop had gotten to 100 degrees C. I tried booting it back up, same result before with the lights.

Now my question is, what is causing this? My charger? My battery? Is there anyway I can fix this without replacing the mobo?


BTW: BIOS is updated to latest, running Windows 7 Ultimate 32 bit, 100gb 7200RPM HDD, 3gb ram, 2ghz Core 2 Duo

[miro_gt]

internal power supply.

frankly I dont know where that is on your laptop, but you should not have any problems with it. Now the AC adapter might give you problems, thus causing the internal power supply to heat up, so check that out with possibly trying out another AC adapter.

I've had AC adapter to die on me out of nowhere, on a Dell laptop thought after some 3 years of use. Then I've had Lenovo AC adapter to output on and off power to the laptop to the point where the laptop shut down itself and did not start for a day. Frankly I thought the F7 fuse on the MB burned out so I opened it up only to see it was fine. Next day it started up normally, and I though the laptop is dead ... lol ?!?!. Then I trashed that AC adapter and bought another one, and all is good since then.

[TuuS]

I'm not going to speculate on the likelyhood of it being the AC adapter, but you definitely need to rule that out, and if you haven't already done so, remove the battery and try it.

If you need an ac adapter, let me know, I can help you with that, I actually have about 50 of them.