Another 2 seconds to black issue...

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  • metinjsh
    New Member
    • Jul 2011
    • 3
    #1

    Another 2 seconds to black issue...

    Hallo! I carefully check all the tips. At first there were bad transistors C5707 I chaged them, but after few hours problem repeated. I changed all capacitors and resolder transformer solder. And changed transistors again, but two of them all the time "blow".
    Fuse is ok.
    Tags: None
    • ratdude747
      Black Sheep
      • Nov 2008
      • 17136
      • USA
      #2
      Re: Another 2 seconds to black issue...

      Moved as per the OP's and Plainbill's request
      sigpic

      (Insert witty quote here)

        Comment

        • retiredcaps
          Badcaps Legend
          • Apr 2010
          • 9271
          #3
          Re: Another 2 seconds to black issue...

          Originally posted by metinjsh
          At first there were bad transistors C5707 I chaged them, but after few hours problem repeated.
          1) Please list the make and model number of your lcd.

          2) Post top down view pictures of your board (top and bottom) following the instructions below exactly.
          --- begin sig file ---

          If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

          We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

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            Comment

            • PlainBill
              Badcaps Legend
              • Feb 2009
              • 7034
              • USA
              #4
              Re: Another 2 seconds to black issue...

              Thanks, Ratdude.

              Since you have resoldered the transformers and replaced the electrolytic caps, let's dig deeper. Another common cause of this failure is the timing cap in the Royer oscillator. When you post a picture of the board it will be easy to point it out. Also, there is a diode that has been implicated, that may take longer to identify.

              PlainBill
              For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

              Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

                Comment

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