I have a Dell Dimensions desktop that I am fixing for a friend. Once the computer has been on for a few minutes it starts to make a loud noise like the computer is an aeroplane taking off. It seems like it maybe coming from the power supply fan, but I am not sure. I might try and put another power supply in the machine to see if it still does it. Any other ideas as to what it could be. Thanks.
The PC seems to run okay despite the noise. It sounds like it is coming from the Power Supply Fan and is just a louder than usual sound. Should I put speed fan on the system and see what Temp it is running at? Appreciate your help. Craig
What do you mean by the fan is dry? The PC was probably sitting for years and years without being used. I may put another power supply in it to see if this would eliminate the problem. Thanks
the fan has a set of bearings that are packed with grease
have a read here http://en.wikipedia.org/wiki/Computer_fan
go down to Physical characteristics
describes the bearing types
If you aren't sure it is the power supply fan, try to stop or slow it down. You may need pencil or something small to press on the fan hub close to the center (don't put anything i the fan blades though). If the sound stops or changes then it's the PSU fan.
If that isn't it try the CPU, GPU and case fans one at a time.
Your saying you think it maybe the computer fan and not the Power Supply Fan. Can I remove the computer fan and try another one. Where would I buy a new computer fan from and are they standard through all computers. Thanks.
Thanks for your input. I am not really sure on how you want me to slow down the fan. Is the fan hub the plate in the middle of the Fan on the back of PSU? I will give it a try.
I followed your advice and placed a pencil on the middle of the back of the PSU. This did alter the sound of the noise coming out of the PSU. It muffles the sound and told me clearly that the noise is coming from the PSU. I am looking for a cheap PSU for around $30 that would meet the requirements of my Dell Dimensions 8400. Any Ideas. Thanks. Craig
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