PHILIPS 32PF5420710 not power on

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  • Nawual
    Senior Member
    • Jul 2016
    • 65
    • Spain

    #1

    PHILIPS 32PF5420710 not power on

    This TV does not turn on even in stand bye.Does nothing.It is the Philips model 32pf5420 / 10 chassis with lc4.3e aa.As a power supply brings the model PLCD 190 P1 23171 and I have not found the scheme to be able to measure the voltages that come out to the main board. One help please.



  • WildPuppy
    Senior Member
    • Mar 2018
    • 61
    • Romania

    #2
    Re: PHILIPS 32PF5420710 not power on

    Maybe I don't understand the problem correctly but from what I make of your post, the TV does not even make it to StandBy mode, ie. no LED lights up, nothing. Am I right?

    If yes, did you check the very obvious fuse?
    (the one in the circle)
    Attached Files

    Comment

    • Nawual
      Senior Member
      • Jul 2016
      • 65
      • Spain

      #3
      Re: PHILIPS 32PF5420710 not power on

      Hi,yes, you right-No led lights up and the first things,itΒ΄s check the current cable and that fuse.ItΒ΄s works.

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: PHILIPS 32PF5420710 not power on

        So do you have any DC Voltage on the connector that goes to the main board? All 0V?
        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

        • Nawual
          Senior Member
          • Jul 2016
          • 65
          • Spain

          #5
          Re: PHILIPS 32PF5420710 not power on

          My problem is that I do not know what voltages and which wires from the connector that goes to the main board have to carry them.

          In other occasions you have the tensions and the name of each cable painting on the board, this time it has nothing and I can not find the scheme of the power supply.

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: PHILIPS 32PF5420710 not power on

            Right now we just need to know if there are any DC Voltages at all at the connector, so please just report what each pin has, that is what I will do if I have the board in front of me.
            BTW, sometime they print pin names on the bottom side of the board.
            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

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: PHILIPS 32PF5420710 not power on

              We also need straight shot high res pictures of the whole bottom side of that power supply board so I can trace out the circuits.
              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

              • Nawual
                Senior Member
                • Jul 2016
                • 65
                • Spain

                #8
                Re: PHILIPS 32PF5420710 not power on

                Tomorrow I will see some indication from the back and what tensions are between the pins.

                There are three photos uploaded in high resolution, are not they good?

                I can go up more if the details are not well appreciated

                Comment

                • budm
                  Badcaps Legend
                  • Feb 2010
                  • 40746
                  • USA

                  #9
                  Re: PHILIPS 32PF5420710 not power on

                  Originally posted by Nawual
                  Tomorrow I will see some indication from the back and what tensions are between the pins.

                  There are three photos uploaded in high resolution, are not they good?

                  I can go up more if the details are not well appreciated
                  Well, I do not see the pictures of the bottom side of the board.
                  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

                  • Nawual
                    Senior Member
                    • Jul 2016
                    • 65
                    • Spain

                    #10
                    Re: PHILIPS 32PF5420710 not power on

                    Apologize for my english,its veeeeeeeeeeeeeeeeery poor.
                    I have confused:
                    "abajo" (spanish)= bottom with "detrΓ‘s"(spanish) = back
                    IΒ΄ll take pictures

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA

                      #11
                      Re: PHILIPS 32PF5420710 not power on

                      No problem.
                      English is also my second language, I know how it is.
                      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

                      • Nawual
                        Senior Member
                        • Jul 2016
                        • 65
                        • Spain

                        #12
                        Re: PHILIPS 32PF5420710 not power on

                        Now I see that you live in S.F bay, there is also a lot of Spanish spoken in those lands.

                        Well, I upload those photos and measurements tomorrow.

                        Thanks for your help

                        Comment

                        • R_J
                          Badcaps Legend
                          • Jun 2012
                          • 9520
                          • Canada

                          #13
                          Re: PHILIPS 32PF5420710 not power on

                          Here is a partial schematic of the power supply
                          Attached Files

                          Comment

                          • Nawual
                            Senior Member
                            • Jul 2016
                            • 65
                            • Spain

                            #14
                            Re: PHILIPS 32PF5420710 not power on

                            Oh mate,very interesting,thanks!

                            Comment

                            • Nawual
                              Senior Member
                              • Jul 2016
                              • 65
                              • Spain

                              #15
                              Re: PHILIPS 32PF5420710 not power on

                              Thanks to the pdf of the source uploaded in this post, I have removed the power source from the tv and I have connected on pin 10 a voltage of 3.3v through a 1k resistor. After that I have measured the voltages in the connector and I have obtained these measures:
                              Pin 1:24,7v
                              Pin 2:0v
                              Pin 3:3,3v
                              Pin 4:3,3v
                              Pin 5:0v
                              Pin 6:0v
                              Pin 7:0v
                              Pin 8:11,9v
                              Pin 9:3,3v
                              Pin 10:3,1v in+with external source
                              Pin 11:0v
                              Pin 12:0v

                              Well, I think the problem is on the main board. What do you think?

                              Comment

                              • tmcw
                                Badcaps Veteran
                                • Oct 2010
                                • 382
                                • Ireland

                                #16
                                Re: PHILIPS 32PF5420710 not power on

                                Just wondering if you made any progress with your issues?

                                I have a Philips 32PF5331/10, but mine appears to have the same power board as yours.

                                Mine is still working, but from cold, it can take a few times switching the set on/off before it will start up, but it seems to work fine after that.

                                I haven't had it long enough to test it further, but if you need any info or tests that I can carry out that might help, let me know.

                                Comment

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