phillips 47pfl7422d is dim on left side of lcd

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  • scapino
    New Member
    • Jun 2013
    • 2
    • US

    #21
    Re: phillips 47pfl7422d is dim on left side of lcd

    @ Tom66 and/or anyone -
    I've removed all four 680uF / 35V caps. I've got a couple 1000uF / 50V caps from work - do you think I can use these or should I just order the correct caps?

    I'm a field engineer, not a design engineer. If I remember my college days correctly, I should still be within the 20% tolerance if these are wired in series. However, if they are wired in parallel then I'd be well over 30% off on total capacitance. I'm assuming they are just starter caps, and taken out of the circuit once fully energized?

    Thanks again!
    -j

    Comment

    • newtothis
      Badcaps Legend
      • Mar 2013
      • 1556
      • england

      #22
      Re: phillips 47pfl7422d is dim on left side of lcd

      Well I found out that it totally depends on the circuit that is being worked on... For example whilst learning I changed a cap for a higher microfarad and voltage and it dodnt cause an issue, Did the same thing on another board and when plugged in... BANG! Fried 5 SMD ceramic resistors Lovely smell it made too but i fixed that and put the correct caps on and working fine.

      Someone else will be able to give you a more precise answer as I'm still learning but thats my view anyway

      Comment

      • maiden790
        Senior Member
        • Nov 2014
        • 94
        • United States

        #23
        Re: phillips 47pfl7422d is dim on left side of lcd

        Hi I have the same issue, slave had bad caps, replaced them, still dim. Looked at the ceramic fuse and it looks fine but then again a literally looked, I don't have a volt meter yet. What the hecks wrong with this thing?? Someone please help me out with this one please
        Attached Files
        Last edited by maiden790; 12-09-2014, 06:18 PM.
        one mans is another ones treasure

        Comment

        • maiden790
          Senior Member
          • Nov 2014
          • 94
          • United States

          #24
          Re: phillips 47pfl7422d is dim on left side of lcd

          okay i found out it is INDEED the ceramic fuse? now how do i look up the correct one and buy it in the united states?? its a KOAC 10A
          one mans is another ones treasure

          Comment

          • Widgeteer
            New Member
            • Sep 2015
            • 1
            • USA

            #25
            Re: phillips 47pfl7422d is dim on left side of lcd

            Same Issue Here. No backlight, all 4 caps on inverter boards bad. Replaced 4 caps with replacement suggested on first page and left side still dim. Soldered jumper onto ceramic fuse and works perfect. Now ordering replacement for ceramic fuse, then fixing correctly.

            Comment

            • cervega
              New Member
              • Dec 2016
              • 3
              • USA

              #26
              Re: phillips 47pfl7422d is dim on left side of lcd

              Replaced capacitors on the slave left side(there were burnt up, and I tested them for fun)- didn't work.
              Replaced slave inverted board - didn't work.
              Power going to master and slave are constant 24volts
              Does this mean the bulbs are bad?

              Comment

              • wiru
                Member
                • Nov 2015
                • 13
                • Lithuania

                #27
                Re: phillips 47pfl7422d is dim on left side of lcd

                Have you checked the fuses? Based on other replies in this thread, these could be o/c.

                Comment

                • cervega
                  New Member
                  • Dec 2016
                  • 3
                  • USA

                  #28
                  Re: phillips 47pfl7422d is dim on left side of lcd

                  Tested fuses they were fine on the inverter boards.
                  Is there any other fuses I should test, I saw a couple others fuses on the power board amd they tested fine as well.

                  Comment

                  • cervega
                    New Member
                    • Dec 2016
                    • 3
                    • USA

                    #29
                    Re: phillips 47pfl7422d is dim on left side of lcd

                    Can you replace the master board with a slave?

                    Comment

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