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blowing power supplies

Discussion in 'Hardware' started by DOCDave, Feb 10, 2007.

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  1. DOCDave

    DOCDave Thread Starter

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    Does anyone have a solution to why my motherboard is blowing power supplies? I read one post that had an answer that motherboards don't usually blow power supplies. WELL mine has blown TWO. I have a power supply tester and the second one I know was good just before plugging into the motherboard, now it energizes for about 2 seconds. If I turn the power supply off using the I/O switch on it I can get it to energize again. I have lighted fans, they light for about two seconds then go out, everything DEAD. I can repeat this process as many times as I wish with the same result. This problem just all of a sudden started. ANY HELP?
     
  2. win2kpro

    win2kpro

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    What make and model PSU are you using?
     
  3. DOCDave

    DOCDave Thread Starter

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    Both of them were
    VPOWER
    LC-B400ATX
     
  4. win2kpro

    win2kpro

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    I really couldn't find much information on that power supply, but apparently from this discussion the model LC-B400ATX may be manufactured by different manufacturers.

    http://www.hardwareanalysis.com/content/topic/53955/

    If you have blown 2 of them, then I certainly would be looking for a different brand. Good brands to consider are;

    PC Power & Cooling, Antec, Seasonic, Enermax, Cooler Master, Thermaltake.
     
  5. Frank4d

    Frank4d Retired Trusted Advisor

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    Go with one of the ones suggested above.

    LC Power PSUs, made by Deer Computer Co, Ltd have a reputation for being cheapo crappy power supplies. Deer also makes Foxconn, Allied, Hercules, and about 10 other crappy brands.
     
  6. crjdriver

    crjdriver Moderator

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    I found some specs for that power supply; BTW it sells for $16.50 :eek: :eek: not a real quality unit. It is basically junk. Go with a quality power supply and your problems will most likely be fixed.
     
  7. DOCDave

    DOCDave Thread Starter

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    All of that is great HOWEVER it was running for two years without BLOWING power supplies. tyhen one day it would NOT power up. the second supply unit was one I had laying around and that one BLEW OUT when trying to power up the computer too. THERE IS SOMETHING ELSE wrong NOT the power supply unit. the second unit I took out of a 233 mh system I do not use anymore BUT WORKED.Thanks for input though.
     
  8. idowindows

    idowindows

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    I would also consider taking a look at your power source. You may be getting too much juice from your electricity source. Have you tried connecting the pc elsewhere? How'bout a UPS?
     
  9. crjdriver

    crjdriver Moderator

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    You may in fact have a problem with a motherboard however when you troubleshoot, you cannot use junk parts. It would help if you posted exact specs with links to your parts.
     
  10. XSkylerX

    XSkylerX

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    yeah, check out the mobo, i know that certain gateways had 2 pins switched for the mobo plug, maybe gateways not the only one that did that
     
  11. Crispies

    Crispies

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    are u using ur comps power button to turn on the comp after u turn on the power supply u know u have to right?
     
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