White screen on Chimei CMV222H

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  • o3365566
    Member
    • Nov 2012
    • 31
    • france
    #1

    White screen on Chimei CMV222H

    Hi all,

    I open a new thread cause my problem has evolved, for info the original thread was here: https://www.badcaps.net/forum/showthread.php?t=24043

    Resuming the history, I had my display power on, backlight ok but black screen. It smelled burned. I opened it and I found 1 cap bulged on power board and 1 mosfet completely burned on the TCON (fuses were ok). So I changed them but during testing I blown one fuse in the TCON input. I replaced the fuse with a new 3A one and after few minutes it was blown again. So I replaced the fuse with 2 3A fuse in parallel.
    Now the display works for few minutes and then the images fades out in a soft white light.
    If I turn off and then on the display, it works again for few minutes.
    I hear something buzzing on the power board...

    Any suggestion, please?

    Thanks.
    Tags: None
    • selldoor
      Slow Learner
      • Dec 2010
      • 7870
      #2
      Re: White screen on Chimei CMV222H

      As a general rule we dont like people starting new threads for the same machine.
      Can you update the old thread saying you have started a new one. We really need good pictures of the fronts and backs of your main and power boards. Does the pair of fuses get hot and does the mosfet get hot.
      Usually when one cap goes bad on a power supply others soon follow so we often recommend replacing any caps of the same make and series with GOOD low esr caps
      What make series cap did you use.
      Please upload pictures using attachment function when ask for help on the repair
      http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • o3365566
          Member
          • Nov 2012
          • 31
          • france
          #3
          Re: White screen on Chimei CMV222H

          I'm sorry! I updated old thread with a link to this one.
          At home I will post pictures of the board and info about caps.

            Comment

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