Bush LCD37TV006HD inputs changing automatically

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  • zx81
    Senior Member
    • Mar 2014
    • 118
    • UK
    #1

    Bush LCD37TV006HD inputs changing automatically

    Hi Guys can you please help with this Bush LCD37TV006HD problem?

    Pics attached.

    The problem is it will keep switching channels/inputs or go into menus and raise the volume up and down all on its own without any buttons being pressed.

    Here are the voltages:

    BL_ON_OFF - 3.20v
    PMW_DIM - 3.24v
    +12VL - 11.83v
    +5v Stby - 5.5v
    +5v main -5.45v
    styb - 4.74v

    Thanks,


    zx81.
    Attached Files
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Bush LCD37TV006HD inputs changing automatically

      Unplug button board and see if fault clears, could be stuck button.
      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

        • zx81
          Senior Member
          • Mar 2014
          • 118
          • UK
          #3
          Re: Bush LCD37TV006HD inputs changing automatically

          Wow Tom fast reply must have been 60 sec after I posted

          Will check button board right now.

          Cheers.

            Comment

            • zx81
              Senior Member
              • Mar 2014
              • 118
              • UK
              #4
              Re: Bush LCD37TV006HD inputs changing automatically

              Removed button board and if i give it a slight twist back and fro I see the set behaving in the same manner but even more directly related to the twisting. What do you reckon dry joints?


              There are only buttons resistors and one cap on the board.

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: Bush LCD37TV006HD inputs changing automatically

                  I've had a fault like this on a Bush made by proview like this set. In that case the strange "parallel port" connector between boards had come loose. It connects the main board to the chassis.
                  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

                    • zx81
                      Senior Member
                      • Mar 2014
                      • 118
                      • UK
                      #6
                      Re: Bush LCD37TV006HD inputs changing automatically

                      Just flushed out the switched with switch cleaner and so far the set seems to be behaving

                      Even when I twist the board the selection stays put. I'll run it for a few hours and keep an eye on it. So far so good.

                      Cheers Tom.

                        Comment

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