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AMD 8320 Stock Cooler Thermistor Issue

post #1 of 17
Thread Starter 
Last night, I switched to a new motherboard for my 8320. During the process when I was taking the heatsink back out of the box, I noticed a small flat piece of metal with a prong on two of the ends. I couldn't figure out where it came from at first so I dismissed it and ignored it.

Shortly after I got everything running correctly, I noticed my fan speed was maintaining a constant 3300 RPMs, and the CPU was beginning to overheat into 60s at max load. I spent hours trying to figure out the issue, fiddling in the bios, trying speedfan, etc, to no avail. Finally, I pulled off the fan and googled it, it's an AVC Fan. Then, I learned that the fan is actually controlled by the thermistor,

To test if the thermistor was still functional, I took off the fan from the heatsink, reversed it and held it in place. Sure enough, once the hot air was blowing over the thermistor, the fan started spinning back up into 4000-5000 RPMs.

I'm assuming that metal prong I found held it in place, as there is a "cave" of sorts near the center of the heatsink, which seems like it would fit in place. I haven't filled around with it too much.

So, now I'm trying to get the thermistor back into a position, or use the metal piece if that's what its for, into place so that the thermistor is reading the "hot spot" it is supposed to.

Do I need to sort of wedge it between some of the fins on the heatsink? Do I need to bridge it somehow? Or does it just need to be touching the heatsink directly, or does it stay in the air? I know I can short out the thermistor worst case scenario but I don't know the proper way of doing it.

Appreciate any help I can get, thanks!
post #2 of 17
so you just want some pictures of the stock HS/Fan being taken apart? i can do that
post #3 of 17
how about you take some pics of the part that fell off and how your setup currently looks and i'll show you pictures of what it should be
post #4 of 17
Thread Starter 
Quote:
Originally Posted by Covert_Death View Post

so you just want some pictures of the stock HS/Fan being taken apart? i can do that

That'd be awesome, thanks!

Also, I found the part that fell off, when you take off the fan, there's like a little hole in the dead center of the heatsink, I found out it just slides right in there
post #5 of 17
it looks like that metal piece goes UNDER the retention bracket that holds the HS down to the AM3+ mounting bracket... pictures of it properly in place coming shortly

EDIT: picture
IMG_20121116_181809.jpg
post #6 of 17
let me know what other pictures you want so i can be of better service smile.gif
post #7 of 17
Thread Starter 
Wow that's so weird, Looks like I may have to remount the HSF to fix it.. I'll give it a shot and see what happens. Could you take a picture of your Fan with the Thermistor showing if possible?
post #8 of 17
I assume that little bulb that sticks out is what your talking about?

IMG_20121116_182724.jpg
IMG_20121116_183030.jpg
Edited by Covert_Death - 11/16/12 at 4:32pm
post #9 of 17
Thread Starter 
Quote:
Originally Posted by Covert_Death View Post

I assume that little bulb that sticks out is what your talking about?
IMG_20121116_182724.jpg
IMG_20121116_183030.jpg

Yep that's it! I bent mine a little bit inward to see if it would help or do anything. I put the metal piece back in place and it wasn't too easy unfortunately. Fan is starting to get around 4400 RPM when the CPU hits around 62, so it's starting to improve a little bit, however it seemed like relocating the metal piece did very little to help, but it's probably a good thing that it's where it belongs now, haha. I'm going to try reapplying thermal paste and see what happens!
post #10 of 17
dumb question i know but you have it hooked up to a 4-pin connector right?
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