Please help! How to test Power supply fan; how to replace?

[kjacobs]

I have a PC that is 8 years old. I've replaced everything at least once...except for the power supply. The PC is running hot with the case closed (highest so far is CPU 72 Celsius, and mobo 57 Celsius-yes celsius). Cleaned out this morning with compressed air but still heats up.

The fan on the CPU is working. The PS is very warm to the touch. I don;t recall the last time I actually saw its fan moving!

How do I test the PS fan? Is it hard to replace? Do I have to replace the whole PS?



Ken

PS The text below is additional info I posted on Case forum without any responses.




Asus P5A-B and 450 AMD K-6 3+ running hot

I replaced the CPU and heatsink and fan months ago. Now it seems to be running hot?

BIOS says the following:

CPU temp is 66 Celsius (yes Celsius)
Mobo temp is 54 Celsius

The PC sits in the bottom of an armoire but of course the armoire doors are open when it is on.

I DID take the cover off and used compressed air to clean the system and fans out. VERY dusty! The CPU fan was dirty too. (I had been running the PC with the cover unscrewed and the sides out a bit. Course that probably encouraged the dirt to fly in!

A week ago the hard drive light pulsated and I heard a shrill noise.

ANy advice?

Ken

 

[John]

Open the psu case and remove the fan. You might have to cut the 2 leads. Replace fan and hook up accordingly.

 

[kjacobs]

The PC was built with a 486, 50 mhz processor! I can't read the PS wattage unless I remove it, but I am sure it is low by today's standards. It was depressing to read the prices on the original invoice when I was looking for the PS rating!

Are PS's expensive? I guess the fan would be easier to replace than the PS?


Ken

 

[MrBond]

An AT style power supply shouldn't be too expensive, I seem to recall seeing some of them at a computer show for around $10-20

 

[Paulson]

John's got it right. I've done this for a ps fan that died. Just either cut the wires or remove and replace...

it's a really simple process and doesn't take much time at all.

 

[kjacobs]

Thanks for the help. I think I will pull the power supply and replace the fan. I'll check the PS wattage while I am at it.

Guess I can get a fan at Radio Shack? ANything special to look for?

Ken

 

[Jhhnn]

Just try to get a fan of the exact same size and similar cfm/current ratings. Unplugging the power cord and hitting the on/off switch a couple of times should help discharge the capacitors.

 

[kjacobs]

I was able to pull the fan assembly out. It is a three inch fan in a square black assembly.

Nidec Beta SL Model D08T-12 PH 5
12 V DC
.16 AMP
Nippon Dissan Corp.

Can anybody decipher this for me

Where would be the place to get one? Radio Shack? Electrical parts supply house? Computer repair shop?

How can I tell which way to orient the fan? Blowing in or out? Can I tell without installing whole PS?

Thanks.

Ken

PS I assume I can run the PC without it temporarily?

 

[lenjack]

You can get one at radio shack, but it will be more expensive than if you buy elswhere. like at a comp shop

 

[Jhhnn]

Take the fan with you to the Ratshack or any place that sells computer parts, match it up to a new one. What you have is a 12 volt- .16 amphere fan, the outside of the plastic box probably measures 80 millimeters, and it's likely 25 mm thick. Very common, just get a 12volt fan of the same size with somewhere near the same amphere rating and you should be good to go after a little bit of wire splicing.