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4670k Delidi issues. Used razor blade technique...

post #1 of 6
Thread Starter 
So, I delided my 4670K and it was all working fine. I ran a burn in utility for an hour and never went over 45C. Decided to OC and boom, won't boot. I have a Gigabyte OC Force motherboard which has a mode that powers everything but the CPU, and that runs fine. I pulled the CPU out and decided to deep clean it just in case the Antec Formula 7 got into those chips next to the CPU. After an isopropyl alcohol bath and some serious cleaning, I tried again, and same deal. After cleaning it like crazy, I noticed a small aberration on the bottom corner of the CPU die. No idea what it is or where it came from. However, I have been having constant sleep issues with this computer, and I'm thinking it MIGHT be power supply. Like, it just chose right now to not boot. Here's hoping?

Anyway, here's the pics: http://imgur.com/a/nz60r

So, the pics make it looks scratched up like crazy, but it doesn't look like that in person. I used basically just very light pressure with an exacto for like, an hour trying to get all that off. That crap was caked on there good. I'm sorta worried that the alcohol, which was on it while I was trying to clean off the gunk, was making the surface look smoother than it actually is.

In any case, I don't THINK I gouged deep enough to cause any issues, but that one corner of the CPU die looks screwed. I don't even know what happened there. I never touched the die.





A video of the CPU in 4K should be available here whenever YouTube is done thinking about it: https://www.youtube.com/watch?v=eTBuwYmJoPU
Edited by dokujaryu - 3/10/14 at 12:04am
post #2 of 6
Scratches on the substrate aren't deep and are highly unlikely to be the problem.

However, that chip on the die, or the flexing of the chip as you were working on it, could certainly have killed it.
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ASUS Xonar DS 
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by Blameless View Post

Scratches on the substrate aren't deep and are highly unlikely to be the problem.

However, that chip on the die, or the flexing of the chip as you were working on it, could certainly have killed it.

But, I ran a 1 hour burn in on it at 45C at stock freq/voltage with no issues. I poked it up to 4.5 @ 1.25v and boom, totally dead? I've reset all BIOS settings and everything with no luck. :-/
post #4 of 6
this is the safer way to delid:
     
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post #5 of 6
Make sure IHS is in as close to it's original position as possible. I took my delidded 4770k out to finish cleaning off the black silicone glue on the pcb shortly after initial delid. During that time I scratched up my die real good (http://imgur.com/a/Gwb3w) cleaning it to get ready to go back in. A bit of sand or grit got on my paper towel without me noticing. After I put it back in and it didn't boot I was for sure it was dead. Thankfully a fellow member (Shout out to Wirerat) suggested I give it another try making sure it was seated in the socket as good as possible. So I did and thank goodness that was indeed the issue.

TLDR: Removing the black silicone can some times cause connection issues with the pins if the IHS is not in the absolute correct position.

Maybe your issue is something simple like this. GL man, really hope she pulls through!
Edited by Tmfs - 3/10/14 at 1:04am
post #6 of 6
Tmfs is a boss, would never of thought of that
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