Replacing a fan on a 500W computer power supply is it too dangerous to attempt.

I have a Power Supply Vista Brand 500W. I was told that it was extremely dangerous to do anything in them. I can see that the one fan in the back has locked up. and does not wan to spin. From what I can tell everything else seems to work. Can anyone tell me if it is

Easy
Safe
reasonable thing to do
How to .....might help

To replace the fan that is in the back and put it back in the PC I have. If not any recommendations on Power Supply Brands for a new Intel 64 bit system I just bought.
Please advise. Thank you.
Fletcher BurdineTableau Trainer & Consultant Sales Exec.Asked:
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JohnBusiness Consultant (Owner)Commented:
It depends entirely on the design whether it is safe and easy to do. If the power supply can be taken apart with screws and if the cabling is neatly done, then you should be able to remove the fan. It should plug into the power supply circuit board.

If the supply is riveted together, if the wiring is more spaghetti than neat and if the fan is riveted to the case, I would not bother.

If you do take it apart, turn it off, remove it from the computer, and leave it sit for a couple of days. Identify the power pins after this time and carefully short them with a resistor to bleed off any latent charge. There should not be much after a couple of days.

I have taken Tektronix, HP and various computer supplies apart. I have fixed the Tektronix and HP supplies but never bothered with the computer supplies because they were usually too far gone. Heat destroys power supplies.

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Fletcher BurdineTableau Trainer & Consultant Sales Exec.Author Commented:
Thanks for the tip. I will give it a look. So if I do not open the box it may be safe to open after 3-4 days. That is how long it will take for me to get a new one shipped that I want. If heat destroys power supplies might be time for a new one anyway. thank you sir. You have always been a huge help.
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JohnBusiness Consultant (Owner)Commented:
Thank you and good luck with the supply. If you get a new one, you can always experiment on the old one.

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Rob MinersCommented:
You may be able to replace the fan or even repair the old one, but you may encounter other problems like the ones in this example.

http://www.electronicrepairguide.com/Atx-Power-Supply.html


You could use this Power Supply Calculator to find out what Voltage PSU that you need to purchase. I would recommend Antec as they make good quality products.


http://www.antec.outervision.com/
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Rob MinersCommented:
oops should have refreshed the page
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Lee W, MVPTechnology and Business Process AdvisorCommented:
In my opinion, the time and effort required to replace it is not worth the $40 to outright replace the power supply.  And I don't know many technicians or consultants who would waste the time trying to replace the fan when they could just quickly replace the power supply.
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