Question about Compaq 300Wt Presario ATX Power Supply Power Supply

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Flashing Green Light on Power Supply

I have a Compaq Presario SR 1318 NX with a ATX 300-12z Rev: BD HP P/N 5187-6114. While we had a power outage I had turned the computer off, when I tried to turn it back on I noticed a green blinking light on the back and the computer would not turn on. Does anyone have idea's as to what could be wrong with it? Do I need a new power supply?

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  • Anonymous Jan 19, 2009

    same 4 me

  • adr67 Jan 28, 2009

    Power outage due to an ice storm. Now the computer is dead, and only the green light blinks. Is the supply dead and needs replacing?

  • brleever Feb 09, 2009

    Same as them.

  • Anonymous Feb 11, 2009

    so... how to fix it?

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  • 254 Answers

Get yourself a themaltake ps

make sure you remove the old one and take it with you to the shop or get the shop to do it for you if you dont have the expertise yourself.


hope this helps

Posted on Jan 01, 2009

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1 Answer

Does a solid green light mean the power supply is ok when disconnected from motherboard and drives, ATX-300-12Z


Not necessarily. The green light usually just signifies power to the power supply. Amazon sells a cheap power supply tester that can verify everything on a power supply from old to new.

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Bestec power supply model ATX-300-12Z Rev BD green indicating light flashes on off when plugged in.


Most computer testing facilities will test your current power supply for free. A replacement is very inexpensive to replace. Bestbuy, MicroCenter, small computer shops and buy replacemnent from Amazon.com, newegg.com.. Just make sure you have the correct information for your replacement. The model number on the power supply would be your best bet in most cases. Good luck and have a great day. I buy power supplies as low as $15 dollars Generic

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Power supply or motherboard problem?


Hi talissap,

The blinking light is telling you something about the PSU. First check any AC mains voltage select switches for proper setting. US should be 115. Second if you have a multimeter, you could test the PSU for voltage. Disconnect all power to all components. remove all components from the board including cpu, memory . Leave the PSU only plugged into the board. Press power. If the fan turns on then it's not the power supply. The brand power supply isn't the best, I've seen where you need to wait for 5-20 minutes for the blinking to stop, at which time it will fire up. Now, if it doesn't power up, then it's most likely the PSU.

Good Luck,

Mark

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1 Answer

Bestec ATX-250-12Z Rev.C Green LD starts to blink


Most computer testing facilities will test your current power supply for free. A replacement is very inexpensive to replace. Bestbuy, MicroCenter, small computer shops and buy replacement from Amazon.com, newegg.com.. Just make sure you have the correct information for your replacement. The model number on the power supply would be your best bet in most cases. Good luck and have a great day. I buy power supplies as low as $15 dollars Generic

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1 Answer

The pc wont power up and the green led on the PSU is just flashing, is the bestec atx 250 12z broken?


Most likely yes.

I would also reccomend an upgrade to that PSU when replacing it.

Something in the 450-Watt neighborhood is usually a bit more robust.

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1 Answer

Bad power supply?


Do yo have a volt meter or an atx psu tester?
you can check voltage to see

If a power supply is bad, your pc will turn off or/and turn on and turn off. As long as your system is running without and shut downs your good.

However if your pc is turing off, I would change it as soon as you can. basically what is happening, when you unplug everything there isn't much of a draw on power so the light remains steady, but when you plug devices in there is a draw and the PSU cannot deliver.

I hope this helps.

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6 Answers

Flashing Green Light on Power BESTEC Power Supply


Hi. NO, *********** board is not fried. I am not sure what the problem is but I do know how to fix it. It is usually casued by power outages (even if you have UPS supply).

1. TAKE OUT THE ELECTRICITY LEAD TO THE COMPUTER. Look inside the computer and find the bunch of wires coming from the power supply unit (the box thing at the top with the fan and all those colouted wires!).

2. Find where these wires run into a plastic connector and plug into the mother board. Unplug it.

3. Now plug the electicity lead back into the computer. The light should now stay ON.

4. Plug in the connector again... and boot up. Leave it run a while to convince it!

5. Repeat this process if it does not work first time.

This should fix your problem . It works for me when I get this problem.

Friend in Spain

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Compaq dead after power company shutdown period


Sounds like a blown fuse in the psu, replace the unit and you should be good to go.

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