40bv700b lcd main board fault?

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  • charlierfc
    Senior Member
    • Mar 2013
    • 93
    • scotland

    #1

    40bv700b lcd main board fault?

    Hi all. I have the above tv, it works fine until you plug in a hdmi.
    When you do the picture vanishes leaving only the sound. the backight is still on but the picture s black. would replacing the main board fix this?
    would a psu fault cause this? when the hdmi is unplugged the tv works as normal again, ps the sky box and hdmi wires are fine.
    thanks for reading
  • charlierfc
    Senior Member
    • Mar 2013
    • 93
    • scotland

    #2
    Re: 40bv700b lcd main board fault?

    nobody have any idea? im not wanna get a new main board if a psu could cause this problem?
    im gonna try find a factory reset maybe help?

    Comment

    • charlierfc
      Senior Member
      • Mar 2013
      • 93
      • scotland

      #3
      Re: 40bv700b lcd main board fault?

      ok i done a reset from the service menu and all seems to be good so far, Menu 4725 brings up the menu as its vistal based main board.
      hope thats it sorted

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #4
        Re: 40bv700b lcd main board fault?

        Toshiba 40BV700B? It's completely, 100% Vestel, not a lick of Toshiba aside from one patent for the TV guide which Vestel bought off 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

        • charlierfc
          Senior Member
          • Mar 2013
          • 93
          • scotland

          #5
          Re: 40bv700b lcd main board fault?

          hi tom, have you seen this before where a reset of the tv cured the fault? so far 3 hours alls been good. any faults id update for others, bit of luck and its cured. vestel are pretty rubbish main boards psu no wonder they rebrand the tvs

          Comment

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