Question about HP ATX-250-12Z, ATX-250-12Z Rev. H1, HP P/N: 5187-1100, Genuine Bestec 250W Replacement Power Supply Fo... (ATX25012ZREVH1) Power Supply

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Compaq dead after power company shutdown period

My kids inexpensive compaq presario sr1000 went dead after a power outage.
unplugged waited...still dead.
There is 5 volts coming out of the supply,,,stby. I guess, but there is no 12 volts and the fans don't run
Should the supply be putting out twelve volts in standby?
The front green led flashes rapidly whnever the unit is plugged in

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  • Bob Ballantyne
    Bob Ballantyne Dec 31, 2008

    Same with my HP Pavilion as there is no fuse on the psu I cant replace it,the odd thing is I took it into have our IT tech look at it,it worked norm,ally when it was plugged in! But went back to the flashing led on the psu and that on the start up switch when I got it back home.

  • Michiel Haisma
    Michiel Haisma Mar 29, 2009

    I have excactly the same problem, had it before. But it went away after a night with the cable unplugged, then it worked again for months. Now its back again, this time a long-duration powerdown wont fix anything...

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  • 72 Answers

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

Posted on Dec 02, 2008

  • Richard O
    Richard O Dec 04, 2008

    Could also be the mobo

  • Richard O
    Richard O Dec 05, 2008

    oh and in standby there should be a constant 5v but nothing else

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