DV2000 - 1 of 2 Cores running hot - ?

Hi, I'm trying to diagnose a friends laptop.

I noticed it was running really really hot, almost painful to hold your fingers against the rear fan vent. So I ran SpeedFan and sure enough the temps were whacked out:

1st core at reasonable temps (30ish)
2nd core from 65 - 90!

I tried following the disassembly guide for the DV2xxxx series here to take a look at the heatsink contact and fan but I got stuck at the logic board. (One of the disconnected WLAN antenna cables is impossible to fish out from the chasis, and after removing all connections, the logic board refused to budge fully)

So I just went nuts with compressed air on the exposed parts of the fan/heatsink, but that only helped a bit, temps on that core were still at a constant 65+ but the other core was at 30-35 and all other components were at okay temps...

any ideas? the thing is out of warranty

 

It needs new thermal paste. You need to get it apart. With the Wireless antennas i just pull on the other end thats coming out of the screen it always comes out for me and i've never had a problem getting that out.

 

Whenever you're getting strange temperatures (mismatched or abnormally cool) you should check using another application. If you already used HwMonitor, try CoreTemp.