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"lap gone wrong" or "a pasty problem"

post #1 of 11
Thread Starter 
soooo, i lapped my corsair h50 to drop my temps, obviously. i read around the webernets that the stock thermal paste on the h50 was the respected ShinEtsu. knowing i would need to reapply after lapping, i acquired the very same stuff. after lapping the h50s heatsink, i reapplied and reseated, all seemed well, except my temps are now worse! i used to oc to 4.1 GHZ on my sig, reaching temps of 59C, now they shoot straight up to 62C before my overheat protection shuts the damn thing down. i'm thinking i did something wrong here, probably application of the thermal paste or reseating of the heatsink/pump. can anyone help me sort this out?
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Holly
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post #2 of 11
Have you only reseated once? Try again and see what the paste looks ilke when you take it off. Maybe some pictures would help too to see what you did.
post #3 of 11
Maybe you've lapped it wrong and now have a uneven surface. Place it on a flat surface like glass to see if it's completely flat.
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post #4 of 11
use a razor blade with the cutting edge on the copper plate and then check and see if you can see any light emitting from under the cutting edge

i believe this is called something like the daylight test or something
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post #5 of 11
I'm not sure if a H50 has a 'bowed' baseplate (I didn't think it did) but if it has you may have lapped it out.

EDIT: I don't think it does have a bow

'Lapping the H50 should be no problem and you will not void the warranty. We have not tested lapped vs unlapped so I would not know if the difference would be significant.'

from http://forum.corsair.com/forums/show...49&postcount=2
Edited by Big Elf - 5/16/11 at 7:57am
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post #6 of 11
How much thermal paste did you use? Ideally you want a dob of paste the size of a single grain of rice . Using too much paste can lead to bad temps. As posted above, can you get some of pics?
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post #7 of 11
Did you remember to plug the pump back in?
post #8 of 11
^yep that happens alot XD
post #9 of 11
Quote:
Originally Posted by Onions View Post
^yep that happens alot XD
I do it all the time with my GPU PCI-E molex connectors... The high pitched alarm they give off is annoying as all get out.

It would be funny if that is the issue for OP!
    
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post #10 of 11
how did you apply your thermal paste?

The H50 and H70 mounting hardware doesn't provide a whole heck of a lot of mounting pressure.
When I was using my H70, I actually got my best temperatures when I spread an even thin layer of paste over the entire surface of the CPU, rather than the usual dab or blob in the middle.
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