Magnavox 42mf531d 37 power issue?

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  • ricor
    New Member
    • Sep 2012
    • 1
    • USA
    #1

    Magnavox 42mf531d 37 power issue?

    I have had this TV since new. Often it would flash different color screens in the middle of viewing, from day 1.

    It recently stopped working. Power light is blinking green. Light green, bright green, flashing then off.

    I took out the power board and the capacitors were bulged and leaking.

    I replaced all 4 and plugged her in. The light flashed the same, the screen came on displaying HDMI input at the top, then turned off with the green light flashing.

    FYI, I replaced the capacitors again in case one was bad and I had no way to test them (can they be tested with a multimeter?)

    Any ideas?

    Thanks!
    Tags: None
    • drpj23
      Badcaps Veteran
      • May 2012
      • 528
      • USA
      #2
      Re: Magnavox 42mf531d 37 power issue?

      Sounds like something got damaged as the those caps went out.
      Best to include pics - especially high res of the power supply

      And you need a capacitor analyzer or ESR meter to effectively check them.

        Comment

        • Dgtech
          E. Technician
          • Apr 2009
          • 1462
          • Steeler
          #3
          Re: Magnavox 42mf531d 37 power issue?

          Based on the description of the failure, it sounds to me like it had two issues. One being the power problem and the other being maybe a tcon board issue. The only thing that I can positively rule out is the Inverter board. At this stage, I'd look at replacing boards but if you're not sure which one is bad, it can get pricey.
          The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: Magnavox 42mf531d 37 power issue?

              Bad cap can look normal also.
              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

                • lilmomma86
                  New Member
                  • Sep 2012
                  • 1
                  • USA
                  #5
                  Re: Magnavox 42mf531d 37 power issue?

                  I am having the same issue. The power light flashes green constantly. I have tried to find pictures of the issue online and have not had any luck. Can anyone help?
                  Last edited by lilmomma86; 09-16-2012, 03:06 PM.

                    Comment

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