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I had a power supply problem so I purchased a new, however I am unable to get power to the computer, the light on the power supply is on

Need to find motherboard wiring diagram for a V2 Premier computer, Motherboard is a P21G V1

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Go to or uk .and just the information you have above and you will find it,remember its known as(google it) good luck.

Posted on Aug 21, 2009


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Posted on Jan 02, 2017


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Power supply ok to plug in point at laptop. No lights on laptop unable to power up.

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Aug 08, 2012 | BenQ Joybook A53 Notebook

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Green light switches to red light when u turn tv on no pictures

the electrolytic caps need replace on the power supply module, or the power supply need replace,Go to to purchase a new power supply.

Sep 16, 2011 | Televison & Video

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No Display, No Response

Do you hear any fans? You may need to open the computer case and look inside to see if you have any led's or fan's functioning. If you do not see any lights on the mother board or working fans, check the fan inside the power supply by looking through the fan guard. If you do not see the power supply fan working, make sure you have the computer plugged into a live outlet, and the power cord is good. Furthermore, look for a switch on the back of the power supply to make sure it is switched to the on position. If you still have no working functions of the computer, go to a computer store like Comp USA or Best Buy and purchase a power supply tester which you may find for under ten bucks. Touch the metal case of the power supply while removing the main power connector of the mother board. Always touch the metal case of the supply to discharge any static, or you could cause immediate or future damage from weakened static sensitive components. Plug the power connector into the power supply tester and make sure all lights light up. If no lights light up, you can check the fuse on the supply if it is external, or you will have to open the power supply to check the fuse. Alternatively, you can buy a new power supply which you will need to do if some of the lights on the power supply checker light up.

If the fans work on the computer and the power led's work then you may have a bad video cable connection, video card, or monitor, which will need to be checked individually. If you hear any beeps, check your manual for the description of the number and duration of the beeps which will indicate bad video or memory sticks.

I hope this helps but you can reply if you have any other questions. I think it could be the power supply with all the storms this time of year which could have killed the Power Supply which is easily replaceable.

Jul 13, 2011 | Computers & Internet

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I recently purchased a new atx 1956f power supply. When it was installed in my computer the green light in the back came on like it was supposed to, but when I pushed the computer power on button the power...

Hi, check your power supplier fan is work or not. if it is then watch mother board light is on or not. If it is then try to connect correctly power cable into the port.


May 13, 2011 | Computers & Internet

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Dell Inspiron 1721 will not power on,light on power supply flashes rapidly.

First, try and take out the battery and start the computer with just the power adapter. If the power adapter is still blinking, replace the power adapter. If the computer turns on with just the power adapter, replace the battery.

If the battery status light rapidly flashes amber, the battery may be defective. Purchase a replacement battery from Dell.

If the power supply status light flashes, the power supply may be defective. Purchase a replacement power supply.

I’m happy to help further over the phone at

Feb 15, 2011 | Dell Inspiron 1721 Notebook

1 Answer

I recently purchased a Dynex 400 watt atx power supply for my Dell optiplex gx280 (slim form). The reason I did this is I have a new PNY geforce 8400 GPU and my old power supply is only 160 watts (1/2 the...

Sounds like the power supply is not compatible with the motherboard. If the motherboard can't support a 400 watt powers supply you will either get a blinking light or nothing at all. Those optiplex's use a proprietory power supply because of the pin connectors and how a power supply is supposed to fit in there. If you can't find a 400 watt power supply that fits then get a hold of Dell and see if they sell one for that computer.

Sep 22, 2010 | Dynex 400-Watt ATX CPU Power Supply

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My Maxtor 3200 has a gren light that is now blinking and the computer cannot start the drive. Code 10. What does this mean?

I had this problem. I learned that the power supply was defective. You can purchase a 12V 2amp power supply. This solved my problem. My green light was coming on but my computer didn't recognize the drive and I got the same Code 10 cannot start drive. I purchased a 12V 3amp power supply. It doesn't hurt to have more amps but you need at least 2amps.

Jan 08, 2010 | Maxtor Personal Storage 3200 (U01E200) 200...

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Does it have a fuse we got hit by lighting and now the Pc wont power up

To fix the problem, you need to disassemble the power supply, replace the burnt out fuse, & also check the bridge rectifier section for burnt out rectifying diodes (these usually get burnt out if the high current gets the chance to leak past the fuse, which could sometimes happen). If you find burnt out rectifying diodes, you will need to replace them as well, as they could burn out the fuse again when you try to use the power supply while they are still there.

Dec 20, 2009 | Codegen : 350W ATX Power Supply With 12cm...

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My optiplex 330 is not powering up.the power botton flashes orangy bright when the pc is turned on.what the problem there please

The common issue related with a Flashing Amber Power Light is a BAD POWER SUPPLY. If the Amber Light is SOLID then it may be your MOTHERBOARD.

But if it is flashing repeatedly then it is your power supply, you will need to purchase a new one. Good Luck.

Oct 08, 2009 | Dell OptiPlex 330 Desktop Desktop Computer...

2 Answers

In 72 power board

No need for a new power supply I can repair them at a lower cost. My ebay ID is Gtitubro.

Dec 08, 2008 | InFocus ScreenPlay 7200 Multimedia...

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