Magnavox 46ME313V/F7 powers on and off

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  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #21
    Re: Magnavox 46ME313V/F7 powers on and off

    OK, that does not make sense, the 56 ohms resistor is fed to pin 3 of the IR BUT YOU READ 268 Ohms.
    To get 56 Ohms to gorund between the pin 1 of the connector and ground, it must have faulty part some where, the on one I can see will be C4054. Check the resistance of that cap and remove it if it still shows < 100 Ohms.
    Last edited by budm; 11-07-2014, 07:40 PM.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment

    • cory1108
      Member
      • Oct 2014
      • 16
      • usa

      #22
      Re: Magnavox 46ME313V/F7 powers on and off

      4051 and 4056 showing between 6.5 and 7 ohms but from the best of my testing the ir sensor does appear to be shorted

      Comment

      • cory1108
        Member
        • Oct 2014
        • 16
        • usa

        #23
        Re: Magnavox 46ME313V/F7 powers on and off

        C 4054 is 62 ohms

        Comment

        • cory1108
          Member
          • Oct 2014
          • 16
          • usa

          #24
          Re: Magnavox 46ME313V/F7 powers on and off

          Thank you for taking the time to help me with this! I do not have any replacement parts but it seems we have it pretty well narrowed down to the ir board so I'm just going to replace entire board.... $10 on SJ so not bad at all.

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #25
            Re: Magnavox 46ME313V/F7 powers on and off

            OK, for $10 it will be cheaper than buying all the tools to fix the board, just make sure to give us the follow-up on the repair.
            Never stop learning
            Basic LCD TV and Monitor troubleshooting guides.
            http://www.badcaps.net/forum/showthr...956#post305956

            Voltage Regulator (LDO) testing:
            http://www.badcaps.net/forum/showthr...999#post300999

            Inverter testing using old CFL:
            http://www.badcaps.net/forum/showthr...er+testing+cfl

            Tear down pictures : Hit the ">" Show Albums and stories" on the left side
            http://s807.photobucket.com/user/budm/library/

            TV Factory reset codes listing:
            http://www.badcaps.net/forum/showthread.php?t=24809

            Comment

            • HiDesertRat
              Member
              • Oct 2014
              • 25
              • United States

              #26
              Re: Magnavox 46ME313V/F7 powers on and off

              With my IR board out. Measuring resistance black lead on pin 7; every pin, 1,2,3,4,5,6,8 and 9 all read an open (using 2000 ohm setting)

              I did swap the leads just to see if it would make a difference:

              pin 1 = 372
              pin 2, 3, 4 = open
              pin 5 = 1725
              pin 6 = 840
              pin 8 = 706
              pin 9 = 706

              Only did this to prove you have to have the black lead on ground when making the resistance readings. I am sure there is a diode in there somewhere that gets forward biased with leads reversed.

              Still didn't get the reading Cory did.
              Attached Files

              Comment

              • HiDesertRat
                Member
                • Oct 2014
                • 25
                • United States

                #27
                Re: Magnavox 46ME313V/F7 powers on and off

                Well, Cory.....how did the IR board replacement work out for you? I'm interested in knowing how things went......

                Comment

                • Dbmwhite
                  New Member
                  • Feb 2016
                  • 3
                  • USA

                  #28
                  Re: Magnavox 46ME313V/F7 powers on and off

                  hello guys I am new here. I have a Magnavox 46me313v/f7 it quit working one day. I found online some info and some stuff to check. need less to say I got a IR sensor and I installed it. the tv turn on and work just fine but then when I turn the tv off it will not turn back on. I then took the ack off the tv and I found when I unplug the ir sensor and plug the old one back the tv will come back on but when the tv is turn off it will not turn back till you unplug the ir sensor.please help

                  Comment

                  • heavymachines
                    Badcaps Legend
                    • Mar 2011
                    • 1028
                    • United States

                    #29
                    Re: Magnavox 46ME313V/F7 powers on and off

                    OK guys an update to this thread since the OP never came back . I removed C4056 and C4051 on IR board and tv will turn on by power switch and work fine and dandy. The ir is definitely shorted so i will be replacing it and should solve this TV problem.





                    Well after playing around the darn remote still works with tv even with those caps removed!!!!!! every function appears to work like normal i do not understand it but i will take it. Everything works.
                    Last edited by heavymachines; 05-29-2017, 02:38 PM. Reason: details

                    Comment

                    • heavymachines
                      Badcaps Legend
                      • Mar 2011
                      • 1028
                      • United States

                      #30
                      Re: Magnavox 46ME313V/F7 powers on and off

                      Another update replaced those SMD ceramics on ir board and all still is well the tv works fine with or without them as long as you remove the shorted cap with 6.5 ohms of resistance...

                      Comment

                      • dskall
                        Badcaps Legend
                        • Oct 2016
                        • 2905
                        • usa

                        #31
                        Re: Magnavox 46ME313V/F7 powers on and off

                        So was ir sensor or caps?
                        I assume no responsibility for any stupid suggestions I might post.

                        Comment

                        • heavymachines
                          Badcaps Legend
                          • Mar 2011
                          • 1028
                          • United States

                          #32
                          Re: Magnavox 46ME313V/F7 powers on and off

                          SMD Ceramic cap with 6.5 ohms of resistance was the culprit... Replace or remove and tv works fine either way...

                          Comment

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