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Amd Radeon 6670 Fan doesn't spin

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  • GPUs
  • Computers
  • Fan
  • CPUs
Last response: in CPUs
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August 1, 2014 7:20:22 PM

So my computer has been overheating for the past few days, and it has got to the point where the GPU gets so hot that it auto shuts down my computer.

With some programs i discovered that it gets to ~115c on load with 70c idle. So I cleaned out the inside of the computer to no avail. I later opened it while it was running to see whats wrong, and the discovered that the main fan works, but the tiny fan for the GPU doesn't which explains why it over heats.

How would I start it working again or would i need a new graphics card?

More about : amd radeon 6670 fan spin

a c 418 à CPUs
August 1, 2014 7:30:00 PM

If it won't spin with a bump from your fingers, it probably is shot. Time for a new card unless you want to hunt around for another fan that will fit and be the correct RPM.
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August 1, 2014 7:33:47 PM

clutchc said:
If it won't spin with a bump from your fingers, it probably is shot. Time for a new card unless you want to hunt around for another fan that will fit and be the correct RPM.

I already tried to nudge it clockwise and counterclock wise already and it didn't work. I also forgot to mention that occasionally the fan DOES work. My evidence is yesterday where my gpu has no problems at all, but the day BEFORE THAT I had problems. It tends to work after a long shutdown I.E overnight.

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a c 418 à CPUs
August 1, 2014 7:38:40 PM

Have you taken the card out and looked at the fan's tiny cable to see if it is securely plugged into its header? While the card is out, blow it clean of dust and dirt that can be clogging the bearing.
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a c 185 à CPUs
August 1, 2014 8:08:25 PM

New card.

If you game then a better card isn't too expensive, and if you don't a basic HD6450 or similar is about $30 or maybe you even have an iGPU or onboard video you can use.

Gaming?
http://www.techpowerup.com/reviews/ASUS/GTX_750_Ti_OC/2...

Not sure of your hardware or budget, but I suggest a MINIMUM of the GT640 for light gaming. THIS can help you find one:
http://pcpartpicker.com/parts/video-card/

*There's a big difference in VALUE. I checked a while ago and the R7-240 was far too expensive for its performance. Conversely an R7-260X is a great value:
http://pcpartpicker.com/part/asus-video-card-r7260xdc2o...

Other:
I believe the HD6670 and GT640 are fairly close in performance. Thus an R7-260X is over 2X as good depending on how much your CPU would bottleneck a game.
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August 1, 2014 8:11:55 PM

clutchc said:
Have you taken the card out and looked at the fan's tiny cable to see if it is securely plugged into its header? While the card is out, blow it clean of dust and dirt that can be clogging the bearing.


ok, even though i didn't know what "header" or "bearing" meant, i took the card out and I saw a pair of intertwined lines (one red and one black) coming out of the bottom of the black covering of the gpu. They lead very close by to a tiny white box that was still on the gpu board itself. The red wire and black wire went into 2 separate slots that were next to each other. Slight tugging tells me that it was nice and secure.

When i turned on my comp again, i tried to jumpstart the fan by prodding it and spinning it as it booted up. I noticed VERY SLIGHT movement on its own before it became immobile again.

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a c 185 à CPUs
August 1, 2014 8:16:08 PM

Seath said:
clutchc said:
Have you taken the card out and looked at the fan's tiny cable to see if it is securely plugged into its header? While the card is out, blow it clean of dust and dirt that can be clogging the bearing.


ok, even though i didn't know what "header" or "bearing" meant, i took the card out and I saw a pair of intertwined lines (one red and one black) coming out of the bottom of the black covering of the gpu. They lead very close by to a tiny white box that was still on the gpu board itself. The red wire and black wire went into 2 separate slots that were next to each other. Slight tugging tells me that it was nice and secure.

When i turned on my comp again, i tried to jumpstart the fan by prodding it and spinning it as it booted up. I noticed VERY SLIGHT movement on its own before it became immobile again.



Either the fan is dead/dying, or the card itself isn't properly telling it to spin. You could try hooking the fan up to a DC source and see if it spins but I suspect it's the fan. Not sure if you can replace it.
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a c 418 à CPUs
August 1, 2014 8:20:02 PM

Those inexpensive DC motors do die sometimes. Not unheard of. Do you have integrated gfx to get by with until you can afford a new card?
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August 1, 2014 8:28:25 PM

Unfortunately i don't have integrated graphics nor do i have a dc source to connect it to. As a kind of desperation tactic, could i place a small portable fan next to it while its running to cool it down?
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a c 418 à CPUs
August 1, 2014 8:32:03 PM

Seath said:
Unfortunately i don't have integrated graphics nor do i have a dc source to connect it to. As a kind of desperation tactic, could i place a small portable fan next to it while its running to cool it down?


Won't hurt to try. If you can take the fan and its shroud off the card, the fan's air will get to the heat sink better.
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August 1, 2014 8:38:16 PM

Thanks for your help then, pretty much the natural end of this is to get a new card or keep it ventilated with a fan near it.
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August 1, 2014 9:04:22 PM

clutchc said:
Seath said:
Unfortunately i don't have integrated graphics nor do i have a dc source to connect it to. As a kind of desperation tactic, could i place a small portable fan next to it while its running to cool it down?


Won't hurt to try. If you can take the fan and its shroud off the card, the fan's air will get to the heat sink better.


Ok, as I watched my temperature slowly rise to 100c, i decided to try and manually start it again while it running, and it took me about 10 seconds but it finally picked it up, and spun on its own for a while. This tells me it still has life in it. If i can manage to keep it spinning permanently, would it be ok to keep my computer on permanently? Or at least a state where the fan would keep going.

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a c 418 à CPUs
August 2, 2014 10:07:20 AM

My guess is that the needle bearing (or whatever that brand uses) is shot. The armature looses magnetic center. BY bumping it manually, it eventually finds mag. ctr. again and takes off... for awhile. See if there is end to end play in the armature. If so, there's nothing you as an end user can do but get a new card and recycle that one.
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