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Power Supply my system's power supply is not starting and so as my system

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Re: Power Supply

There may be several problems.

1. power supply may not be connected
2. the voltage switch may not be in its correct position on 110V or 220 V
3. bad wire broken
4. not connected to the internal system

if the problem is other than these then i can not solve them unless the PC is in front of me

Posted on Dec 15, 2007

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Power light on computer flashes..tried the trouble shooting advice w no results. Bestec power supply model atx 250-12z. Unplugged computer to clean and now wont turn on..No fan no nothing..Just a green...

If you didn't accidentally unplug the four pin connector near the CPU, you need to replace the power supply. This is actually a fairly common occurrence with the cheap ATX power supplies being tossed into systems these days.

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The switch mode power supply in the desktop computer has failed. Most likely the capacitors in the power has exploded.
You need to open the desktop computer and remove the old power supply and replace it with a new one. Take the old power supply with you to your friendly computer shop and get a replacement power supply with the same wattage or greater wattage.

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See if you plugged in the 4 pin power connector on the motherboard besides the main power connection on the power supply (usually black colored and its a plastic 4 pin connector)

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There is no start

Find a electronics-technician with a MultiMeter, to measure the output voltage and amperage being produced by the power-supply, and compare with the specifications for the power-supply..

Or, replace the power-supply.

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Can you supply pinout for Dell AA23300 Power Supply ?

On the main plug there is a single green wire. Jumper the green wire to any black groung wire in the plug and the fan will start and you will have output.

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No Power

Dear Sir,

I assume, you have voltmeter with you.
Set VOM to DC 20 V range.
Remove the Power Supply from cabinet. Be sure you have proper earth in your house/workshop.
On the 20/24 pin main connector of your power supply, short the pins carrying green & black wire.
Hook your voltmeter -ve on any black pin of the connector permenantly.
& then connect the mains power cord to your power supply.
If your power supply is ok, this shall start the fans of the power supply on & running. Now you can check the voltages on different pins. There is a sticker on your power supply showing the normal voltages on every wire.
If you don't see any / normal volatges, your power supply needs repairing. You can buy a new one/ repair existing.

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Orange flashing lights

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