Results 1 to 2 of 2

Thread: need diagnosis on failure

  1. #1
    Join Date
    Sep 2015
    Location
    Thailand
    Posts
    1
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default need diagnosis on failure

    hi,
    situation leading to failure of system:
    PC bought in 2001, all components upgraded over the years except cpu, mainboard and case. PSU which I suspect has failed is PC Power & Cooling 420W ATX bought in 2008. A bad experience in the past has taught me to completely unplug the PC during lightning storms. When the lightning has completely abated, I replug the PC into the wall outlet, press, turn on the UPS, press the start button on the case and the PC boots. This has been the ritual for longer than I have owned the current PSU. Then about two months ago a peculiar thing began happening. After a storm had petered out, I replugged but the PC would not boot up. I tried several times checking all wires and connections but the PC would not boot immediately after replugging in the system. A few hours later, I pressed the start button again and it started. A week or two later, the same scenario occurred. That is: Lightning storm, unplug, no lightning, replug, press start but no boot, wait 3-4 hours, press start again, everything starts. Over the past two months I replayed this scenario 4 times until two days ago. Now it appears to be dead.
    I have read the FAQ and the Troubleshooting thread but nothing works.
    Given the behavior of the PC prior to two days ago, which component would cause such bevior if it were beginning to fail?

  2. #2
    quest for silence's Avatar
    quest for silence is offline Silencer & heathen relic of a human (™ by OW)
    Join Date
    Sep 2013
    Location
    Italy
    Posts
    3,353
    Thanks Thanks Given 
    1,037
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by jonny pendejo, jr. View Post
    which component would cause such bevior if it were beginning to fail?
    Do you have any ATX PSU tester, handy?

    It would look like a problem with ATX PG signal, it could be a PSU issue or a mobo issue (a 2001 mobo is rather old, while a 2008 PSU is likely not), but with a PSU tester you might rule out one of those two parts.

    Alternatively it might be some issue with the PSU stand by rail caps.
    Best, Luca

Similar Threads

  1. antec vp450p failure
    By lizer21 in forum PC Power Supply Discussion
    Replies: 1
    Last Post: 11-18-2018, 11:50 AM
  2. Primary cap failure
    By ashiekh in forum PC Power Supply Discussion
    Replies: 5
    Last Post: 03-01-2018, 08:01 PM
  3. Interesting CX failure
    By ridgid13579 in forum PC Power Supply Discussion
    Replies: 36
    Last Post: 10-05-2016, 11:59 PM
  4. A PSU failure?
    By 9635741 in forum PC Power Supply Discussion
    Replies: 15
    Last Post: 02-11-2011, 11:32 AM
  5. psu failure?
    By Praxis1452 in forum PC Power Supply Discussion
    Replies: 4
    Last Post: 11-19-2006, 12:59 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •