Samsung SyncMaster 930BF 2 secs to K

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  • CountZ3ro
    New Member
    • Jan 2014
    • 8
    • England

    #1

    Samsung SyncMaster 930BF 2 secs to K

    Hullo all, please be gentle with me as its my first post and my electrical knowledge is very basic but I'm willing to learn.

    I've read the stickied post, and to be fair without pics most of it sailed over my head, but I've tested what I can.

    The monitor initially started to go black occasionally when being first turned on, a simple power on and off would then rectify it and it would be fine again for days or weeks. These instances became more frequent until finally power cycling would not solve it.
    After ruling out the GFX card and cabling the next logical step was the monitor itself.

    On initially opening her up, I noticed a rusty area on the chassis, as the monitor has been nowhere near a water source I guessed (from what I'd read) that a cap must have leaked.
    After looking at the PSU board though I cannot see anything obvious, there are no stains and no caps look to be bulging or have any discernible residue on them, just a bit of dust.

    So I put her back together, no surprise the result is the same, then started researching via Google.

    I've since given her the torch test and the image is still visible so I'm guessing again that power is not the issue and its the backlight.

    Anyway, I'm now looking for your insights into what to test next to find the root problem.
    I have a digital multimeter, capacitance meter and a soldering station (none are expensive but worked fine for me when modifying games consoles or anything with LEDs for friends/family in the past) but my knowledge of their use is very limited so need instructions dumbing down a bit.

    hope the attached pics are good enough, look forward to any replies
    Attached Files
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Samsung SyncMaster 930BF 2 secs to K

    I have seen this due the hi voltage arcing due to bad connection at the lamp assembly.
    http://s807.photobucket.com/user/bud...?sort=3&page=1
    http://s807.photobucket.com/user/bud...?sort=3&page=1
    Last edited by budm; 01-09-2014, 09:56 AM.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment

    • selldoor
      Slow Learner
      • Dec 2010
      • 7870

      #3
      Re: Samsung SyncMaster 930BF 2 secs to K

      Test Fuse FH602
      Please upload pictures using attachment function when ask for help on the repair
      http://www.badcaps.net/forum/showthread.php?t=39740

      Comment

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