Weird power pulsing problem

Discussion in 'General Hardware' started by belveder, Oct 31, 2008.

  1. belveder

    belveder OSNN Senior Addict

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    This morning my second computer started playing up, it seemd to have no power, even the fans could only run at very slow speeds.

    I thought the PSU was faulty so I put a spare Thermaltake 750 watt PSU in. Now when I turn the power, the lights and fans seem to pulse and nothing else happens.

    I have tried it without any cards or accessories with no luck also checked the memory

    Any help would be greatly appreciated
     
  2. LordOfLA

    LordOfLA Godlike!

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    First thing I'd check for is a short somewhere.
     
  3. Dark Atheist

    Dark Atheist Moderator Political User Folding Team

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    bad motherboard me thinks
     
  4. belveder

    belveder OSNN Senior Addict

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    I thought so as well, but hoping not lol
     
  5. belveder

    belveder OSNN Senior Addict

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    I have, by unplugging all the power leads that come from the PSU, taking out all cards including Video card
     
  6. dreamliner77

    dreamliner77 The Analog Kid

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    Also, try reseating the headers for the power and reset buttons from the case.
     
  7. belveder

    belveder OSNN Senior Addict

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    Just tried it on your suggestion, no difference, thanks anyway. This means that I have disconnected / unplugged every single plug on the mobo now. I'm think the mobo must have bit the dust?
     
  8. LordOfLA

    LordOfLA Godlike!

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    disconnect all your devices too. I'd suggest sliding optical drives forward to ensure no contact.

    All you should have to power on is a bare motherboard (no cards, no ram, no devices plugged in. Then use a flathead screwdriver to turn the power on. If it still pulses take the board out the case and try it again.

    If it still pulses you want a new board.
     
  9. belveder

    belveder OSNN Senior Addict

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    Thanks but I already said I did that.