TV cycling channels/source ?

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  • melroy67
    New Member
    • Oct 2012
    • 3
    • uk
    #1

    TV cycling channels/source ?

    Hi Guy's...

    My Samsung LE40R74BD has started cycling through the Source Channel/channels, I've removed the manual push buttons pad on the TV (for changing channels/volume etc)and also tried covering the IR, no evidence of any blown components but it still cycles through the channels.

    Any idea's ?
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: TV cycling channels/source ?

      When it's cycling can you turn it on/off using power button or do things like change volume?
      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

        • melroy67
          New Member
          • Oct 2012
          • 3
          • uk
          #3
          Re: TV cycling channels/source ?

          Hi Tom66,

          Yes you can turn it on/off and the volume dosen't seem to change, if I leave the TV off for a few days it's ok when switched back on for up to an hour at most then resumes cycling so have to power it down for a few days again, seems like a heat or capacitor issue but not sure which panel to replace ?

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: TV cycling channels/source ?

              I would suspect the main board as you've isolated the buttons. Did you try removing the batteries from the remote (or moving remote into another room) and see if that changes behaviour?
              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

                • melroy67
                  New Member
                  • Oct 2012
                  • 3
                  • uk
                  #5
                  Re: TV cycling channels/source ?

                  Yeah I've tried removing the batteries from the remote and any other remote nearby and it doesn't seem to have the usual Samsung switch on/off cycle so I suspect the Main Board also as opposed to the Power Board, might take chances a EBay for another Main Board !

                    Comment

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