Question about Compaq Presario SR1120NX 2.66GHZ Tower w/ CD-RW (2018267632) PC Desktop

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My sr1120nx wont power up its like there is no power in the house i switched power cords nothing

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  • joecoolvette
    joecoolvette Aug 29, 2010

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Depending on where and how it is used the power supply is a major point of failure. Usually due to dust buildup or other air flow issues the power supply will overheat or cause a shutdown due to a fail over condition like no fan or cooling for the CPU. I don't believe the sr1120nx has a power switch on the back of the power supply but double check the obvious....twice. Also, make sure the 110/220V slide is on one side, 110V in the US. You should at least be able to see a fan or CDROM light flicker if the power supply is still able to gasp. Try blowing out the dust and use the opportunity to open the PC and clean it. Amazingly, my experience is that dust causes as many or more failures than viruses. here is the link for the service manual:
http://h10032.www1.hp.com/ctg/Manual/c00067151.pdf
and the parts replacement manual
http://h10032.www1.hp.com/ctg/Manual/c00225000.pdf

Posted on Aug 28, 2010

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Hi First make sure your main power supply is working fine,. Open cpu cabinet cover then pull cmos cell from motherboard for 10 minutes .Reconnect ATX power connector from smps power supply to motherboard. Then check. If still same then make sure smps power supply box is fine it is on the top of the cpu it is square box where power cable connected from main outlet. Change it then it will work again.Also make sure motherboard is not ground with cabinet cover. Let me know if you need further assistance. Thanks for using FixYa.

Posted on Aug 28, 2010

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Posted on Jan 02, 2017

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