Vizio M470SV - shuts off

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  • ppuri3
    Member
    • Oct 2012
    • 11
    • Canada
    #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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    • momaka
      master hoarder
      • May 2008
      • 12160
      • Bulgaria
      #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.

        Comment

        • KENSTV
          New Member
          • Oct 2012
          • 2
          • United States
          #3
          Re: Vizio M470SV - shuts off

          Call Vizio, EEPROM is corrupt

            Comment

            • ppuri3
              Member
              • Oct 2012
              • 11
              • Canada
              #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

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #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

                    • ppuri3
                      Member
                      • Oct 2012
                      • 11
                      • Canada
                      #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?

                        Comment

                        • KENSTV
                          New Member
                          • Oct 2012
                          • 2
                          • United States
                          #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--

                            Comment

                            • ppuri3
                              Member
                              • Oct 2012
                              • 11
                              • Canada
                              #8
                              Re: Vizio M470SV - shuts off

                              How can one get the jig to update the eeprom?

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK
                                  #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

                                    • RetreatWI
                                      Member
                                      • Nov 2011
                                      • 17
                                      #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

                                        • momaka
                                          master hoarder
                                          • May 2008
                                          • 12160
                                          • Bulgaria
                                          #11
                                          Re: Vizio M470SV - shuts off

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

                                            Comment

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