power supply switch

[Barbiep]

Can someone give me instructions on how to change a power supply switch. The power is not reaching the floppy drive or hard drive. The power switch in the front of the computer will not come on.

[YODA74]

How do you know that it is the switch? Is this an ATX power supply and have you tested the power supply first? Very rare for a switch to go out.

How do I test if the power supply is bad?
WarningThis test is for those who have extensive electronics training. Do not try this if you do not have extensive electronics training. Make sure there is enough load connected to the power supply before testing ( at least motherboard and one hard drive)!

http://www.compute-aid.com/images/atxpin.jpg

ATX power connector is layout like above. 5VSB constantly provides 5V power to the connector through pin 9. If you have a voltmeter, while the power supply fan does not turn on, you could identify which pin is pin 9. Normally there is a clip on the connector between pin 15 and 16. If you can identify pin 14, which is power-on pin, you can using a piece of wire short the pin 14 and 15. If you power supply has power connected to it and power switch on the power supply is on, you will see the fan is turnning by now. Otherwise, your power supply may have problem.

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Death has come to our windows.

-- Jeremiah 9:21
(undoubtedly a Biblical reference to a Microsoft product!)



[This message has been edited by YODA74 (edited 02-18-2002).]

[YODA74]

Looking thru the threads is THIS http://www.pcguide.com/ubb/Forum12/HTML/000691.html the same problem you had earlyier if you think it is realated it would be nice if you keeped it in the same thread so people can see what was already posted,as to better to help with the problem. How old is this machine? is it still under warranty? If so I would suggest very strongly as to use the warranty.If not then give us some system spec's and we'll see what we can do.

------------------
Death has come to our windows.

-- Jeremiah 9:21
(undoubtedly a Biblical reference to a Microsoft product!)



[This message has been edited by YODA74 (edited 02-18-2002).]

[Whyzman]

Barbiep,

What happens when you attempt to power up? Does the processor fan, power supply fan come on? Is your concern because you are not seeing any led activity taking place with the hard drive and floppy?

You mention that the power is not "reaching" the hard drive and floppy...would you explain further?

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May all your dealings in life be win/win!


Whyzman
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Reserved for Punishing Humor...A Pessimist's blood is always B-negative!