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Panasonic TX-L42U3B dead screen and blinking standby lights

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    #21
    Re: Panasonic TX-L42U3B dead screen and blinking standby lights

    blink codes
    Attached Files

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      #22
      Re: Panasonic TX-L42U3B dead screen and blinking standby lights

      £29.40 + p+p for a mainboard from flat tv parts if that is the case !

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        #23
        Re: Panasonic TX-L42U3B dead screen and blinking standby lights

        Beware as we have found on the plasmas at least 14 blinks whilst coding for an A board fault can in some cases be caused by other boards.

        I would check the full power on process. Check for all power on signals, check for 24V, 12V, etc.
        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.

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          #24
          Re: Panasonic TX-L42U3B dead screen and blinking standby lights

          I've tried two different tcon boards both with no success so what would you say is the next step ?

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            #25
            Re: Panasonic TX-L42U3B dead screen and blinking standby lights

            Next can you check the voltages see if they come up.
            Last edited by ReeceyBurger123; 06-28-2015, 03:19 PM.
            Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

            https://www.facebook.com/Telford-Tel...7894576335359/

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              #26
              Re: Panasonic TX-L42U3B dead screen and blinking standby lights

              Here are some more pictures of the inverter boards
              Attached Files

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                #27
                Re: Panasonic TX-L42U3B dead screen and blinking standby lights

                Mainboard
                Attached Files

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                  #28
                  Re: Panasonic TX-L42U3B dead screen and blinking standby lights

                  power supply board
                  Attached Files

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                    #29
                    Re: Panasonic TX-L42U3B dead screen and blinking standby lights

                    Master inverter board
                    Attached Files

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                      #30
                      Re: Panasonic TX-L42U3B dead screen and blinking standby lights

                      Tcon Board
                      Attached Files

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                        #31
                        Re: Panasonic TX-L42U3B dead screen and blinking standby lights

                        Where am I checking for the voltages reece can you highlight using paint ?

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                          #32
                          Re: Panasonic TX-L42U3B dead screen and blinking standby lights

                          Right after removing the boards and refitting them i've managed to get a picture and retune left it running in total it was on with picture and sound all working mint through hdmi with the xbox on then after an hour it was back to square 1 again

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                            #33
                            Re: Panasonic TX-L42U3B dead screen and blinking standby lights

                            If physical handling brought it back to life, that suggests cracked solder joints or components or otherwise an intermittent connection somwhere.
                            "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                            -David VanHorn

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                              #34
                              Re: Panasonic TX-L42U3B dead screen and blinking standby lights

                              tried the removal of individual boards to try and replicate again and no dice this time around still got the same 14 blinks and no backlight activity at all still

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                                #35
                                Re: Panasonic TX-L42U3B dead screen and blinking standby lights

                                Also tried the power button +volume down keypress on the side of the tv and after 30 secons of holding it in all i get is a click and back to the blinks

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