Question about Dell Mini Fan. Dimension (W x H x D) in. 8.7 x 12.2 x 8.2 in.

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Noisy fan I have a Dell Dimension DIM 4700C.  The fan has been terribly noisy since i bought the machine, but now it has become unbearably noisy.  What do i do? I called Dell sometime ago and the service man in Delhi told me to unscrew the case to the CPU but i couldn't do that as i was calling from other than where the CPU was at the moment. thx. David

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We have a Dell Dimension 4700C too. We had it on a 3-year warranty and the only problem with it was that from that to time it would become abnormally noisy, too noisy in fact. Dell sent a repair guy twice, and they changed the heatsink/fan assembly unit both times, and the third time we did it ourselves (it's not that hard to do), but here's the thing, we noticed how DUSTY it was when it came out, we wondered how it even worked with all that dust. So, now our warranty has expired, and guess what, the computer started making that terrible racket again, so this time, we opened it, armed with the vacuum cleaner and a can of compressed air, gave the whole inside of the computer a good once over, removed the heatsink/fan assembly and cleaned it thorougly (you can't do this unless it is out), and it worked like a charm, can't even tell the computer is running. Hope this helps.

Posted on Jan 03, 2009

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Wife's Dell Dimension was noisy. Noticed the shelf it was on was leaning a bit. Moved computer to a perfectly level surface and now the Dell is very quiet. Check yours by placing a spirit level on top of the case. Check that it's level both front-to-back and also side-to-side.

Posted on Apr 30, 2008

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Identify which fan you got 2 maybe 3 or 4.

A fan for the power supply that removes heat from the over all system, a fan on the case that also removes general heat and one on the cpu.

The core of this fix is...wait for it...hold the excitment...da... da .da da. WD40.

If it's either the power or case fan try and remove the fan itself, the centre hub will be covered with a simple sticker, removing this will expose the shaft the fan spins on, squirt some wd40 here, if the fan can be attached and actually powered while you do this it will draw the grease down the shaft, otherwise if it's off it will just get a little. Generally this will shut the thing up for another year or two.

Same a appliesto the cpu fan but usually you have to remove that from the heat sink it's attached to get at the stick/shaft.

WD40 is pretty non conductive so you can be kinda sloppy with it, this is my experience anyway. But you don't want to coat your entire computer in it is highly flamable, aka try and just get it on the shaft of the fan.

If your worried look at the hardware store for some other type of lubricant spray, squirt bottle, pretty much anything will do the trick if you can grease up your fan.


Keith

Posted on Nov 09, 2007

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Try to check the fan and the inside of the desktop for any dirty things in there. Especially check the fan to see if something is stuck!

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Fixing a noisy fan


As fans in electronic equipment get dirty; the dust and dirt will slowly work its way into the mechanical components of the fan, grinding the smooth plastic surfaces like sand paper. This keeps the fan from moving smoothly and eventually produces a buzzing or whirring noise from the resulting friction. In time, the increased heat and friction will simply burn the motor out and it may stop working entirely.

Some choose to just ignore the problem or simply disconnect the fan to stop the noise; however, the fan usually serves an important purpose cooling the machine. Cases are carefully designed to circulate air and even one fan failing out of several can change the airflow in such a way that pockets of heat can become trapped above chips and under critical components. While many think that washing or cleaning the fan regularly may resolve this issue, often it does not. In fact, it can make it worse by removing oil and grease intended to lubricate the parts and keep them running smoothly. Removing the dust itself will also not replace the lost plastic as normally smooth surfaces will still be scored. Many times after cleaning fans become even noisier.

Because the plastic itself is physically damaged, the best issue long term with a noisy fan is to just replace the fan yourself when it becomes unbearably loud. That said, don't pay to have a fan repaired or cleaned by a repair service unless under warranty. Most computer shops when faced with a noisy fan issue will simply soak the fan in mineral oil or lubricate it with WD-40 and return it to the customer. This only resolves the issue for a short period of time and cheats the consumer given that the computer fan itself can be bought at a variety of part suppliers so cheaply.

Just treat the noise as good indicator that failure of the fan is imminent. Generally it will not cost over $15 and once installed it runs quietly for a much longer amount of time than any fix.



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7425d28.jpg

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