Akai PDP42Z5TA 42" Plasma TV, input text keep flash

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  • Sevenqi
    Badcaps Veteran
    • Jul 2011
    • 292
    #1

    Akai PDP42Z5TA 42" Plasma TV, input text keep flash

    Akai PDP42Z5TA 42" Plasma TV, the input text screen keep flash (about 3-5 times a second), but the picture and sound is good.
    When I press menu or volumn button, it popup, but is interrupted by the input screen and disappear when the input flash cycle com back.

    I tried to plug out the manaul control board and used remote control to power up, the same problem.

    Any one has idea on how to fix it ?

    Thanks
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Akai PDP42Z5TA 42" Plasma TV, input text keep flash

      Check the buttons on the side or bottom panel on the TV aren't stuck, use some contact cleaner and spray it in there to clean them.
      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

        • Th3_uN1Qu3
          Believe in
          • Jul 2010
          • 6031
          • Romania
          #3
          Re: Akai PDP42Z5TA 42" Plasma TV, input text keep flash

          He said he tried unplugging the button board and it had no effect, so it must be something else. Could be a weird motherboard glitch, maybe bad caps?

          I assume there is an input switch on the button board. I would try and trace that to the pin it connects to, then with the board removed (since you say it's still doing it), see if the voltage on that pin fluctuates according to the text flashes. If so, it's a potential simple fix, if not, you'll have to dig deeper.
          Originally posted by PeteS in CA
          Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
          A working TV? How boring!

            Comment

            • Sevenqi
              Badcaps Veteran
              • Jul 2011
              • 292
              #4
              Re: Akai PDP42Z5TA 42" Plasma TV, input text keep flash

              Originally posted by tom66
              Check the buttons on the side or bottom panel on the TV aren't stuck, use some contact cleaner and spray it in there to clean them.
              I unplug the buttons board (on the riht side of the front panel), and only use the remote control to power up, the same problem.

                Comment

                • JimmysTGP
                  Member
                  • May 2012
                  • 45
                  • US
                  #5
                  Re: Akai PDP42Z5TA 42" Plasma TV, input text keep flash

                  Doesnt seem like much is really wrong with the set just seems like it might need an firmware upgrade. You would need to find out if this could be one the (list of problems) to a fix on an upgrade.

                    Comment

                    • electronicsurplus
                      Badcaps Veteran
                      • Jun 2012
                      • 210
                      • USA
                      #6
                      Re: Akai PDP42Z5TA 42" Plasma TV, input text keep flash

                      Anyone know where to find firmware update for this television?
                      This Forum absolutely the best and, the most helpful forum I have ever found anywhere. thanks to all the fantastic members here
                      Help keep these from the landfills

                        Comment

                        • RON_CET
                          Badcaps Veteran
                          • Jun 2012
                          • 217
                          • USA
                          #7
                          Re: Akai PDP42Z5TA 42" Plasma TV, input text keep flash

                          I think this model was built by LG,but to find the correct firmware version might be a challenge and may come closer just changing main board
                          Ron Driver,BSEE,CET,ISCET,NESDA

                            Comment

                            • Sevenqi
                              Badcaps Veteran
                              • Jul 2011
                              • 292
                              #8
                              Re: Akai PDP42Z5TA 42" Plasma TV, input text keep flash

                              Main Board is expensive, it's not worth replacing it.
                              If can't figure out what's the root cause, I'll send it to recycle yard.

                                Comment

                                • johnboy1313
                                  Badcaps Legend
                                  • Nov 2012
                                  • 1959
                                  • USA
                                  #9
                                  Re: Akai PDP42Z5TA 42" Plasma TV, input text keep flash

                                  I know this is probably really late. The set in question is likely recycled by now. I had the same set with the same issue. In my case, it turned out to be a cracked plug on the LVDS cable at the main board. Three of the wires were making contact with each other. This set has LG internals. The cable from an LG with the same PDP42X3 panel fixed the problem. Weird, I know.

                                    Comment

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