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pap1
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« on: July 12, 2004, 01:05:49 AM »

PLEASE SUPPLY RELEVANT INFORMATION:
Operating System Version:ME
Problem Application Name & Version:
Problem Hardware Make & Model:HP Pavillion XE763
Error Messages:

I am trying to get my nephews PC going before he goes off to college. No power whatsoever. Changed power cords. Checked all connections inside pc.Am I correct to start with replacing the power supply? I don't have any type of testers. Any advice would be appreciated.

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Cactus
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« Reply #1 on: July 12, 2004, 01:38:11 AM »

The only way is to get a voltmeter and measure accross each wire using the black as common.

yellow = 12v
red = 5v
blue = +-12
If my memory serves me correctly.
If the voltages are within 10% then the psu is ok, any lower then the psu may be starting to fail.

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CharlieTosh
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« Reply #2 on: July 14, 2004, 09:41:13 AM »

Be careful you're not jumping the gun here.  Be sure the power outlet you're using is working.  Next you should be sure your cable is good (which you have done).  Now check the back of the power supply.  Many have a small off/on flick switch here; this being switched off is a common cause of power supply problems.  Also check the voltage switch is correct for where you live.

You're right to check the connections inside the PC, as some cheaper supplies won't power up unless something is plugged into them.  Also check the small wire from the power switch on the case to the pins on the motherboard, as this is often overlooked.

Remember if the system is Pentium 4 based, there needs to be an extra 4-pin power connector on the motherboard.

If you try this and still nothing; it's a fair bet the power supply is bad.  Unless your computer uses a custom made power supply, as many machines from the likes of Dell and Compaq do, you can pick up a new one fairly cheap.  Where I live 250watt ones are available for around UK
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