phillips 47pfl7422d is dim on left side of lcd

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  • Tc4595
    Member
    • Nov 2011
    • 12

    #1

    phillips 47pfl7422d is dim on left side of lcd

    Please Help.... I have a 47pfl7422d and the screen is now dim on the left side ... i was told a bad slave inverter so i replaced it, still dim, i removed the lcd screen and looked at the bulbs, right side is bright and the left sides are dim as if not working at all, could someone please help as i dont want to take this tv in for repairs Thanks
  • Tc4595
    Member
    • Nov 2011
    • 12

    #2
    Re: phillips 47pfl7422d is dim on left side of lcd

    Thank you

    Comment

    • PlainBill
      Badcaps Legend
      • Feb 2009
      • 7034
      • USA

      #3
      Re: phillips 47pfl7422d is dim on left side of lcd

      That indicate insufficient voltage out of the inverter. Check the input voltage and of course pictures help us help you. Attach the pictures using 'Manage Attachments'.

      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

      • Tc4595
        Member
        • Nov 2011
        • 12

        #4
        Re: phillips 47pfl7422d is dim on left side of lcd

        i asked someone from just answer and they tod me to replace the master inverter, do you think this is the correct thing to do

        Comment

        • Tc4595
          Member
          • Nov 2011
          • 12

          #5
          Re: phillips 47pfl7422d is dim on left side of lcd

          i know there is the master and slave inverters, is there more then those two?

          Comment

          • Tc4595
            Member
            • Nov 2011
            • 12

            #6
            Re: phillips 47pfl7422d is dim on left side of lcd

            i was looking at the 2 capacitors on the master and slave inverters and the new slaves capacitors look clean as where the old slave and masters look like they have opened up on the end and have had a blackish material ooze from them. Does this mean they are bad??
            Attached Files

            Comment

            • retiredcaps
              Badcaps Legend
              • Apr 2010
              • 9271

              #7
              Re: phillips 47pfl7422d is dim on left side of lcd

              Originally posted by Tc4595
              Does this mean they are bad??
              Yes, they are bad. This is why we always ask for photos. Replace the bad capacitors with something like Panasonic FR or FM series from digikey or mouser.

              If that is a 680uF 35V cap, this will work (assuming height and diameter are okay)

              http://search.digikey.com/us/en/prod...2417-ND/613778
              Last edited by retiredcaps; 11-17-2011, 12:44 AM.
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              Comment

              • Tc4595
                Member
                • Nov 2011
                • 12

                #8
                Re: phillips 47pfl7422d is dim on left side of lcd

                thank you for your help, i may just get the master board from shopjimmy.com , they are local and 35.00 for a new board.

                Comment

                • PlainBill
                  Badcaps Legend
                  • Feb 2009
                  • 7034
                  • USA

                  #9
                  Re: phillips 47pfl7422d is dim on left side of lcd

                  Originally posted by Tc4595
                  thank you for your help, i may just get the master board from shopjimmy.com , they are local and 35.00 for a new board.
                  And new caps will cost under $10, including shipping.

                  If you DO decide to buy a new board, perhaps someone here might be interested in the old boards.

                  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

                  • Toasty
                    Badcaps Legend
                    • Jul 2007
                    • 4171

                    #10
                    Re: phillips 47pfl7422d is dim on left side of lcd

                    ...and the new inverter(s) will need its/their caps replaced as they're using the same brand and series of SamWa crap capacitors!
                    veritas odium parit

                    Comment

                    • Tc4595
                      Member
                      • Nov 2011
                      • 12

                      #11
                      Re: phillips 47pfl7422d is dim on left side of lcd

                      yeah i just ordered the new board that will be here tomorrow, its not my tv but im sure if someone wanted the bad boards we could work something out.

                      Comment

                      • Tc4595
                        Member
                        • Nov 2011
                        • 12

                        #12
                        Re: phillips 47pfl7422d is dim on left side of lcd

                        well put the new master in and same issue, still dim on left side
                        any ideas, now i have replaced the master and slave inverters.... does anyone think the board that the bulbs plug into is bad

                        Comment

                        • Tc4595
                          Member
                          • Nov 2011
                          • 12

                          #13
                          Re: phillips 47pfl7422d is dim on left side of lcd

                          i have the tv on and the back still off it seems as if the slave inverter has no power... its not buzzing like the master at what points should i check for voltage

                          Comment

                          • Tc4595
                            Member
                            • Nov 2011
                            • 12

                            #14
                            Re: phillips 47pfl7422d is dim on left side of lcd

                            ok so i checked the input voltages at the slave inverter and found that vin-1 - vin-5 have 23.95 volts, so it has power but seems like its not turning on anymore
                            Last edited by Tc4595; 11-18-2011, 06:12 PM.

                            Comment

                            • Tc4595
                              Member
                              • Nov 2011
                              • 12

                              #15
                              Re: phillips 47pfl7422d is dim on left side of lcd

                              well thank you all, i just checked the ceramic fuse on the slave board and it is bad, now to replace the little guy, hooked up jumper wire to the old master and bam it turned on... hell yeah

                              Comment

                              • Toasty
                                Badcaps Legend
                                • Jul 2007
                                • 4171

                                #16
                                Re: phillips 47pfl7422d is dim on left side of lcd

                                That was the new slave?
                                veritas odium parit

                                Comment

                                • Tc4595
                                  Member
                                  • Nov 2011
                                  • 12

                                  #17
                                  Re: phillips 47pfl7422d is dim on left side of lcd

                                  yeah i dont know how it was popped unless it came that way or because i didnt replace both at the same time... but i soldered a the fuse from my old master to the new slave and the tv looks great

                                  Comment

                                  • cuestaj1707
                                    Member
                                    • Sep 2012
                                    • 24
                                    • usa

                                    #18
                                    Re: phillips 47pfl7422d is dim on left side of lcd

                                    Thanks to all in this tread,i fixed a same tv whit the same problem just reading here

                                    Comment

                                    • scapino
                                      New Member
                                      • Jun 2013
                                      • 2
                                      • US

                                      #19
                                      Re: phillips 47pfl7422d is dim on left side of lcd

                                      I've got the same problem (both caps pop'ed on the Slave but only one pop'ed on the Master). Do you think I can just replace the caps or is there potentially something else bad on the board too? Someone in the thread mentioned a ceramic fuse but I don't see it anywhere. What else should I check before I reinstall the inverter CCA's?


                                      Originally posted by PlainBill
                                      And new caps will cost under $10, including shipping.

                                      If you DO decide to buy a new board, perhaps someone here might be interested in the old boards.

                                      PlainBill

                                      Comment

                                      • tom66
                                        EVs Rule
                                        • Apr 2011
                                        • 32560
                                        • UK

                                        #20
                                        Re: phillips 47pfl7422d is dim on left side of lcd

                                        The capacitors are likely the only fault.
                                        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                                        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                        Comment

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