Vizio E500AR No Power

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  • Kildar
    Member
    • Jan 2019
    • 21
    • United States

    #21
    Re: Vizio E500AR No Power

    With 20V DC and probes touching where illustrated I still have a reading of 0.

    Is there a separate 5V standby or were you referencing the 3.3V?
    Attached Files

    Comment

    • Kildar
      Member
      • Jan 2019
      • 21
      • United States

      #22
      Re: Vizio E500AR No Power

      Originally posted by DXseekerMO
      Voltage at the main caps proves the fuse is good and the rectifier diode is working, therefore power should be present to run the stand-by circuit. If you have no stand-by voltage then you will have a TV that appears dead.

      Stand-by runs the minimum functions of the TV so commands from the user can be recognized and processed. No stand-by volts = no happy

      TV that 'appears' dead.... and for all intents and purposes is?

      I imagine that with nothing connected the issue would then be with the PSB?

      Comment

      • DXseekerMO
        Badcaps Legend
        • Feb 2018
        • 1119
        • US

        #23
        Re: Vizio E500AR No Power

        STBY voltages is 3.3 in some TV's and 5V in others. Go by what is on your board, prolly says STBY_5V or similar?
        They call me......."threadkiller"

        Comment

        • DXseekerMO
          Badcaps Legend
          • Feb 2018
          • 1119
          • US

          #24
          Re: Vizio E500AR No Power

          Originally posted by Kildar
          TV that 'appears' dead.... and for all intents and purposes is?

          I imagine that with nothing connected the issue would then be with the PSB?
          It appears dead, but there is voltage present not detectable without service. If it were totally dead the main AC fuse would be popped.

          The stand-by circuit upon the power supply board is faulty, at a minimum.
          They call me......."threadkiller"

          Comment

          • Kildar
            Member
            • Jan 2019
            • 21
            • United States

            #25
            Re: Vizio E500AR No Power

            Yeah, pic confirms it's 3.3VSTBY

            Comment

            • DXseekerMO
              Badcaps Legend
              • Feb 2018
              • 1119
              • US

              #26
              Re: Vizio E500AR No Power

              At this point you are looking at either component repair upon the current power supply or replacing it with a good one. Have you ever done component repair on electronics?
              They call me......."threadkiller"

              Comment

              • Kildar
                Member
                • Jan 2019
                • 21
                • United States

                #27
                Re: Vizio E500AR No Power

                I've done a few charging ports on laptops and whatnot, but given I just bought the board I'm going to do my best to work out getting a functioning board from the seller.

                My soldering equipment is also of the lowest quality, so there's that.


                I genuinely appreciate the help! I'll update the thread whenever I have something to report.

                Comment

                • DXseekerMO
                  Badcaps Legend
                  • Feb 2018
                  • 1119
                  • US

                  #28
                  Re: Vizio E500AR No Power

                  There are a lot of good people on this site who's help comes from the heart. They sure don't do it for the money or entertainment value! lol We would appreciate an update when you have one and good luck with the seller!
                  They call me......."threadkiller"

                  Comment

                  • Kildar
                    Member
                    • Jan 2019
                    • 21
                    • United States

                    #29
                    Re: Vizio E500AR No Power

                    Originally posted by DXseekerMO
                    There are a lot of good people on this site who's help comes from the heart. They sure don't do it for the money or entertainment value! lol We would appreciate an update when you have one and good luck with the seller!
                    Bless y'all! Will do, thanks!

                    Comment

                    • captainKKK
                      Badcaps Veteran
                      • Sep 2018
                      • 287
                      • United States

                      #30
                      Re: Vizio E500AR No Power

                      Yes, I would try to get seller refund first. Do u see any voltage across UM 1,5,6,7? After the power supply board is plugged to 110 ac for 10 min, what is the temp of those aluminum heat sinks?

                      Comment

                      • dick_barton
                        Badcaps Legend
                        • Aug 2015
                        • 6642
                        • Wales

                        #31
                        Re: Vizio E500AR No Power

                        Do you have 3.3 volts DC at the 3.3VSTB pin?
                        Willing to help but I'm no expert.

                        Comment

                        • Kildar
                          Member
                          • Jan 2019
                          • 21
                          • United States

                          #32
                          Re: Vizio E500AR No Power

                          Good news: Seller refunded both boards w/o me having to send them back.
                          New powerboard was half as much, so saved a bit of money there.

                          New powerboard works! Hell yeah!

                          Bad news: Picture isn't. (see picture of picture).


                          I tried both mainboards and both sets of ribbons (have two of each now) to no avail. The picture remains nearly unchanged (came through a little clearer but with the same fragmenting).


                          What's my next step?
                          Attached Files

                          Comment

                          • Kildar
                            Member
                            • Jan 2019
                            • 21
                            • United States

                            #33
                            Re: Vizio E500AR No Power

                            Worth noting that I cleaned and looked over the LCD pretty damned closely with a flashlight during the first troubleshoot to ensure it wasn't damaged (to the best of my knowledge).

                            Comment

                            • budm
                              Badcaps Legend
                              • Feb 2010
                              • 40746
                              • USA

                              #34
                              Re: Vizio E500AR No Power

                              Panel problem.
                              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

                              • Kildar
                                Member
                                • Jan 2019
                                • 21
                                • United States

                                #35
                                Re: Vizio E500AR No Power

                                Is there any chance of replacing this ribbon? There's some mild creasing in the others but this one is ripped (and I'm assuming the burning is a result).

                                Replacing the panel?
                                Attached Files

                                Comment

                                • Kildar
                                  Member
                                  • Jan 2019
                                  • 21
                                  • United States

                                  #36
                                  Re: Vizio E500AR No Power

                                  Good chance I inflicted this damage when I took it apart all the way. Won't ever know, but lessons learned the hard way!

                                  Comment

                                  • budm
                                    Badcaps Legend
                                    • Feb 2010
                                    • 40746
                                    • USA

                                    #37
                                    Re: Vizio E500AR No Power

                                    No, you are out of luck.
                                    You need to buy the new screen, expensive.
                                    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

                                    • Kildar
                                      Member
                                      • Jan 2019
                                      • 21
                                      • United States

                                      #38
                                      Re: Vizio E500AR No Power

                                      I honestly can't even find one.


                                      Appreciate all the help, regardless! Learned a few things along the way!

                                      Comment

                                      • Kildar
                                        Member
                                        • Jan 2019
                                        • 21
                                        • United States

                                        #39
                                        Re: Vizio E500AR No Power

                                        Backlighting is really strong. Thinking about putting it back together and using it as a lamp for the garage, haha
                                        Attached Files

                                        Comment

                                        • DXseekerMO
                                          Badcaps Legend
                                          • Feb 2018
                                          • 1119
                                          • US

                                          #40
                                          Re: Vizio E500AR No Power

                                          Darn, and I was hoping this would be a winner. Sorry it didn't work out for you.
                                          They call me......."threadkiller"

                                          Comment

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