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Vizio M470SV - shuts off

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    #1

    Vizio M470SV - shuts off

    M470sv vizio shuts off, will power on if unplugged but then shuts right off.

    Opened the TV.. find pics for the main board and the power board. What to do?
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    #2
    Re: Vizio M470SV - shuts off

    Can you turn the TV back on with the remote or any of the buttons on the TV?

    If you have a multimeter and know how to use it, start by checking the standby voltages. According to the label at the lower right corner of this picture:
    https://www.badcaps.net/forum/attach...2&d=1352353216
    there should be 5.1V on one or more of the pins of that connector next to it. With the TV plugged in, check to see if there is 5.1V and which pins. That's the 5.1VSB.

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      #3
      Re: Vizio M470SV - shuts off

      Call Vizio, EEPROM is corrupt

      Comment

        #4
        Re: Vizio M470SV - shuts off

        I kept trying to start the TV.. Suddenly started. Ran for a day or so and then shut off..
        Powered if unplugged but shuts right off after 3 seconds. I let the TV sit for an hour or so and then restarted the TV. Stated again. Will get the meter and test for voltage.

        Will post the results soon.

        U really think it is the EEPROM or the Power board?

        Comment

          #5
          Re: Vizio M470SV - shuts off

          If it's intermittent it's unlikely to be the EEPROM.
          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

            #6
            Re: Vizio M470SV - shuts off

            I measured the standby voltages... they are 5.1 - 5.25. I went and got a surge protector of Philips of 1000 Jules. The TV has been runing since! Any idea?

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              #7
              Re: Vizio M470SV - shuts off

              Yep the eeprom MIGHT be ok since it's intermittent, could be the main board has bad BGA connections, need to troubleshoot more and see if the supplies are all coming up, lots and lots of reports of the eeprom, a cousin to that set vizio will send a jig to update the eeprom for the same symptom--

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                #8
                Re: Vizio M470SV - shuts off

                How can one get the jig to update the eeprom?

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                  #9
                  Re: Vizio M470SV - shuts off

                  Call Vizio customer support.
                  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

                    #10
                    Re: Vizio M470SV - shuts off

                    Was this issue ever sorted out? I bought one of these TVs at a garage sale with the idea of fixing it.

                    Comment

                      #11
                      Re: Vizio M470SV - shuts off

                      ^ Start a new thread and post your problem there, and pictures if needed.

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