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x201 Fan and Heatsink Replaced Plus Repaste HELP!

Posted: Sun Nov 24, 2019 9:57 am
by OldFong_v2.0
I replaced my X201’s heatsink and fan. The CPU is an i5 from that era. After the fix, including a repaste, my x20 now iIdles around 46C to 48C . I used Thermo Grizzly Kryonaut. 46C to 50C while typing this in Word. I have Zone Alarm running in the background. Measuresments are using tpfancontrol in bios mode.
I am wondering if I did the re-paste correctly. I replaced the fan heatsink assembly enitirely with one from eBay. Here are three photos. Labels are 1, 2 and 3.

Pic 1 shoes the back of my motherboard. Note there are 3 spots that contact the heatsink. I noticed away from the CPU appears to be something else with a thermal pad (?) over it. Anyway, I removed it as it crumbled when I peeled it a little at the edge. So every thing looks like it does in Pic 2 before I repasted everything (all three shiny areas).

Pic 3 shows the replacement assembly I got from eBay. When I rubbed the two spots they appeared to be paste so I cleaned both off.

So in summary applied paste to all three areas. Did I do the work properly? If not, how to fix?

Re: x201 Fan and Heatsink Replaced Plus Repaste HELP!

Posted: Sun Nov 24, 2019 10:03 am
by OldFong_v2.0

Re: x201 Fan and Heatsink Replaced Plus Repaste HELP!

Posted: Sun Nov 24, 2019 11:57 am
by RealBlackStuff
There are 3 surfaces, 2 together = CPU, both need thermal paste.
The bigger one on its own needs a thermal pad of about 1.5-2 mm thick.
If you put paste on it instead of a pad, the heatsink will not make proper contact and that surface will run too hot.

Re: x201 Fan and Heatsink Replaced Plus Repaste HELP!

Posted: Sun Nov 24, 2019 5:27 pm
by OldFong_v2.0
OMG I messed up. Just to clarify the surface with the text printed on it (far right in pic 2) should have a thermal pad instead of paste? Can I use the paste temporarily for a few weeks given the temps I cited or is tpfancontrol only measuring the CPU?

Re: x201 Fan and Heatsink Replaced Plus Repaste HELP!

Posted: Mon Nov 25, 2019 1:59 am
by RealBlackStuff
Pic 1 clearly shows the 'old' thermal pad (on the right, which is the Northbridge chip).

Pic 2 shows that pad (on the right) replaced with WAY too much paste, instead of a new pad.
And when you paste, you ONLY paste the "sticking out/highest" surface, NOT the whole chip (like you did on that Northgate).

Go to your local computer shop and get some piece of thermal pad(1, 1.5 or 2 mm thick, they will all fit), just slightly bigger than that Northbridge's shiny surface (after all the paste has been cleaned off it).