Philips HDTV 42PFL7422D/37 Bad Cap? Help

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  • stonetrails
    New Member
    • Apr 2013
    • 2
    • USA
    #1

    Philips HDTV 42PFL7422D/37 Bad Cap? Help

    Philips HDTV 42PFL7422D/37 - I hear the relays activate every 20-30 seconds. TV off but still connected to AC power. Pushing "on/off" button does nothing. No picture, no sound. If I unplug AC then plug back in, blue LED on front comes on for a few seconds, then goes out. I removed back cover, hoping to see a few bloated caps (I read so much about), no such luck. I still think it's a bad cap, maybe two. Anyone have any ideas on how I can confirm this, test the caps in situ, or find the actual issue? Attached is a borrowed image of the of PC boards in my unit.
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    • selldoor
      Slow Learner
      • Dec 2010
      • 7870
      #2
      Re: Philips HDTV 42PFL7422D/37 Bad Cap? Help

      Well that picture is no use what so ever we need good clear pictures of your boards - clear enough to read the writing on them.

      Do you have a multimeter and soldering iron.
      Please upload pictures using attachment function when ask for help on the repair
      http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: Philips HDTV 42PFL7422D/37 Bad Cap? Help

          What is the resistance reading on resistor 3318 next to the gray rectangular cap?
          What is your chassis number on the model number sticker on the back of the TV?
          The picture you post is the EXACT match to your TV? It is better to show your board since you may have bad component that you may not see or notice them on your board.
          Last edited by budm; 04-05-2013, 06:36 PM.
          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

            • Dgtech
              E. Technician
              • Apr 2009
              • 1462
              • Steeler
              #4
              Re: Philips HDTV 42PFL7422D/37 Bad Cap? Help

              That picture is a picture from the service manual. It would be nice to see YOUR tv boards. They may be different from this layout alltogether. It may have something simple that we can see that needs replaced. Either way, it sounds like a hot side cap problem.
              The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

                Comment

                • retiredcaps
                  Badcaps Legend
                  • Apr 2010
                  • 9271
                  #5
                  Re: Philips HDTV 42PFL7422D/37 Bad Cap? Help

                  Originally posted by Dgtech
                  That picture is a picture from the service manual. It would be nice to see YOUR tv boards.
                  Every day, we have people who use stock pictures like in this post.

                  https://www.badcaps.net/forum/showpo...1&postcount=50

                  If people can't be bothered to take a clear focused picture, I hit close window.
                  --- 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.

                  Please do not post inline and offsite as they slow down the loading of pages.

                  --- end sig file ---

                    Comment

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