Question about HP Pavilion Replacement 200w Micro ATX PS3 Power Supply with Video Connector (PSHPPAVILIONVIDEO) Power Supply

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Comaq SR 1000 worked when shutdwn now wont power up at all

I have a comaq SR 1000 pc when I last shut it down and later tried to restart it it does nothing. the green light on the power supply will only flicker on & off. I unplugged it from the wall. I opened the computer's side cover & disconeced the main power wire harness plug that went to circuit board . I then plugged the cord in the wall and the green light stays on but if you reconnect it back to the board it flickers on and off again. Would you have an idea what is wrong?

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  • Tim Crosslin May 11, 2010

    I meant green light stays on what? The computer or the power supply?

  • Tim Crosslin May 11, 2010

    Green line stays on what the computer or the power supply?

  • Will Godwine May 13, 2014

    Please take a picture, if you can. This way we can all see and have a better idea. Some connection need not to be connected.



2 Answers

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You failed to test ATX supplies correctly
per De ice above.
it takes a jumper to bench test any PSU.
and a voltmeter, (and dummy loads of really savvy)

if the PSU does not turn on and run all fans (you never said the fan words)
then the PSU is bad. it must run for at least 1 second
if the PSU sees hard PS fails it shuts it self off, by DESIGN.
IF PSU is dead what can it be. sure easy.

  1. bad PSU. (my guess is this is IT) given age.
  2. psu unplugged from MOBO.
  3. mobo switch wires to switch bad ,fell off. bad switch , hot wire the switch to prove that.
  4. mobo bad, yes, the MOBO is the logic that turns on all PSUs and can fail but is very rare this, due to that logic is very deep in the glue logic., and almost never fails. but the MOBO has onboard regulators that will send power off to the PSU if they fail, or say a ram card shorts (an other things there)

RULE1, never ever HOT switch (connect) any PSU to any MOBO
or you will blow up chips. why not get a tech fix this PC and not damage it MORE.?
on a working system we pull the line cord
then push front case power sw, and let that discharge all caps in the system or you will BLOW UP EXPENSIVE PART.
for sure. and we use ESD straps, electrostatic discharge starps
on our wrist to ground. to protect MOS logic chips.

or let the parts sit, powered down for 1/2hr, the play.
do that each time you remove internal parts, or put them back
or you will wreck it.
the LED glow at 2v or more, and tell you little.
in case of NYC, it tell you only that Niagara dynamo 1 is not off line.
we use tools one such tool is the $20 DMM in VOLTS Mode.
there are 5 to 10 PSU lines that can fail, DC lines
the MOBO has 2 or 3 regulators that can fail. and tell the PSU
to shut of so the $100 + CPU is not blown to H3LL .
this is how all PC work (DT) slime or not.

Posted on Jun 04, 2017

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SOURCE: power supply light has blinking green light

After researching on the web I replaced the power supply. Problem solved.

Posted on Feb 13, 2008

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SOURCE: Power light which is green

chaque pwr sw pin in ur cpu

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SOURCE: nx6310 wont stay on

HP is notorious for this problem. The problem is that the power jack that is connected to the motherboard has come loose. This is an easy fix is you are comfortable taking apart your notebook and are able to solder the jack back to the motherboard. I have 2 HPs and my friend has 2 and we have done this with ours as well as others. This is the link to the HP website that has your manual for disassembly . When you get to the page, download the Maintenance and Service Guide. (It is all the way at the bottom!) You will need Adobe Acroabt to read it. PRINT the instructions. They will do you no good if they are on the laptop that you are trying to disassemble!

While it may seem daunting, it is really not hard to do. Just be careful to follow all of the disassembly and reassembly instructions and you will have no problems. I promise!

Please remember to rate my solution! Thanks

Posted on Feb 05, 2009

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SOURCE: pc won't power ( turn on)

The green light is most likely your lan card/port. If the cord/outlet are sparking when you plug it in, I would say try plugging something else into that socket, if you get the same spark, I'd call an electrician. Also try plugging the pc into a different outlet. As far as the computer, if its not the outlet then it is the power supply, your motherboard may be fried in the process but if this isn't an issue with that outlet, then you should take it in to a shop.

Posted on Mar 16, 2009

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SOURCE: Hp pc m7640n won't turn on and power supply light is out

OK, this can be a hard thing to fix. Most of the time, the power supply is the first thing to go on a PC. However, when you stated that the motherboards LED came on after you unpluged the PS from the motherboard, it leads me to believe that the motherboard is the issue but the power supply might be outputting higher voltages and the motherboard might be shutting down. Since the power supply is cheaper then most motherboards, I would recommend getting a new one. Check ebay for a new power supply. It should be about $20 with shipping. If the same thing happens, then you need a new motherboard...

Posted on May 30, 2009

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