Vizio e601i has no backlight

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  • fixerupper75
    Senior Member
    • Oct 2014
    • 125
    • us

    #21
    Re: Vizio e601i has no backlight

    Question I have seen alot of these board with yellow boxes(if you will). Is there a known problem with the grey ones.

    Comment

    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #22
      Re: Vizio e601i has no backlight

      Originally posted by fixerupper75
      Question I have seen alot of these board with yellow boxes(if you will). Is there a known problem with the grey ones.
      I do not know but I know that they do fail (either grey, yellow, white, or blue) in capacitance value (capacitance goes down).
      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

      • fixerupper75
        Senior Member
        • Oct 2014
        • 125
        • us

        #23
        Re: Vizio e601i has no backlight

        E=1.16
        f=1.15

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #24
          Re: Vizio e601i has no backlight

          Originally posted by fixerupper75
          E=1.16
          f=1.15
          OK, so they are good, 1uF.
          I need to do more tracing then. I really do not expect the two caps will show 0V when the TV is fist started since there is no open transformer or inductor windings.
          Can you please verify for sure?
          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

          • fixerupper75
            Senior Member
            • Oct 2014
            • 125
            • us

            #25
            Re: Vizio e601i has no backlight

            Nothing on the those 2. The blue disc looking thing. What is it and I did a resistance reading on it and got 12M ohms and open now.

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #26
              Re: Vizio e601i has no backlight

              Originally posted by fixerupper75
              Nothing on the those 2. The blue disc looking thing. What is it and I did a resistance reading on it and got 12M ohms and open now.
              The 4 blue disk on the board? They are X/Y Safety caps.
              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

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #27
                Re: Vizio e601i has no backlight

                OK, the next thing to test will be the resistance between the chassis and each pin of the LED connector, the plug will have to be removed first from the board before testing the resistance. We are trying to find out if any one of the wire is shorted to the chassis.
                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

                • fixerupper75
                  Senior Member
                  • Oct 2014
                  • 125
                  • us

                  #28
                  Re: Vizio e601i has no backlight

                  The four on the right read 0 ohms and the four on the left read high resistance. I checked this yesterday. But couldn't remember the numbers. I'm beganning to think the led on the first ones are bad.

                  Comment

                  • budm
                    Badcaps Legend
                    • Feb 2010
                    • 40746
                    • USA

                    #29
                    Re: Vizio e601i has no backlight

                    Originally posted by fixerupper75
                    The four on the right read 0 ohms and the four on the left read high resistance. I checked this yesterday. But couldn't remember the numbers. I'm beganning to think the led on the first ones are bad.
                    Did you check the resistance readings of the plug with the 8 grey wires removed and the readings are from the 8 grey wires against the chassis? They are not the resistance readings on the connector on the board right? because there are < 1 Ohms resistor on the board that are connected to GND (CHASSIS).
                    I will not be surprised if you have bad LED but we want to make sure there is not shorts to the chassis due to the wires to the LED strips are cut or nicked, that is why you need to remove the connector from the board first and check the resistance of those 8 wires against the chassis.
                    Last edited by budm; 03-11-2015, 05:04 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

                    • fixerupper75
                      Senior Member
                      • Oct 2014
                      • 125
                      • us

                      #30
                      Re: Vizio e601i has no backlight

                      Yeah, that's what I did removed the 8 pin connector and checked each one to chassis gnd. the wires going into the panel.

                      Comment

                      • budm
                        Badcaps Legend
                        • Feb 2010
                        • 40746
                        • USA

                        #31
                        Re: Vizio e601i has no backlight

                        Originally posted by fixerupper75
                        The four on the right read 0 ohms and the four on the left read high resistance. I checked this yesterday. But couldn't remember the numbers. I'm beganning to think the led on the first ones are bad.
                        Yeah, that's what I did removed the 8 pin connector and checked each one to chassis gnd. the wires going into the panel.

                        OK, unless I am wrong, none of them should show any resistance to the chassis.
                        You can try measuring the Voltages on those four caps we did earlier to see if all 4 caps will show Voltage readings now on the two legs of each cap.
                        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

                        • fixerupper75
                          Senior Member
                          • Oct 2014
                          • 125
                          • us

                          #32
                          Re: Vizio e601i has no backlight

                          Ok ill check tomorrow. If I get voltage on the 4 caps does that indicate bad leds.

                          Comment

                          • budm
                            Badcaps Legend
                            • Feb 2010
                            • 40746
                            • USA

                            #33
                            Re: Vizio e601i has no backlight

                            If you do get the Voltages on the caps, then I would say the wires going into the panel is nicked some where by the chassis so you get the resistance readings, bad led will not cause the shorts to the chassis.
                            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

                            • fixerupper75
                              Senior Member
                              • Oct 2014
                              • 125
                              • us

                              #34
                              Re: Vizio e601i has no backlight

                              Hey Budm,
                              Thanks for your help. But the person i was troubleshooting this decide to have Vizio repair it, for a much larger fee, of free.

                              Comment

                              • budm
                                Badcaps Legend
                                • Feb 2010
                                • 40746
                                • USA

                                #35
                                Re: Vizio e601i has no backlight

                                Ah too bad, sure like to find what the cause of the problem is, thank for letting us know. If you can get a hold of the person and find out what they did to fix it, that will good.
                                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

                                • Wackyracer
                                  Member
                                  • Mar 2015
                                  • 23
                                  • USA

                                  #36
                                  Re: Vizio e601i has no backlight

                                  I am working on the exact same model with a similar problem....the LED side lights are bad. My customer bought some used on ebay on my diagnosis. They arrived today. Plugged them in and there was light.

                                  Now to disassemble the panel to replace the bad ones.

                                  Comment

                                  • Wackyracer
                                    Member
                                    • Mar 2015
                                    • 23
                                    • USA

                                    #37
                                    Re: Vizio e601i has no backlight

                                    Originally posted by budm
                                    Ah too bad, sure like to find what the cause of the problem is, thank for letting us know. If you can get a hold of the person and find out what they did to fix it, that will good.
                                    My guess is Vizio will replace the panel to fix the failed led side lights.

                                    Comment

                                    • Wackyracer
                                      Member
                                      • Mar 2015
                                      • 23
                                      • USA

                                      #38
                                      Re: Vizio e601i has no backlight

                                      Anyone have a source showing how to disassemble this large panel?

                                      I have done some smaller ones with ccfl back lights.

                                      Comment

                                      • Agent24
                                        I see dead caps
                                        • Oct 2007
                                        • 4913
                                        • New Zealand

                                        #39
                                        Re: Vizio e601i has no backlight

                                        You may find some video on YouTube or such
                                        "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                                        -David VanHorn

                                        Comment

                                        • Wackyracer
                                          Member
                                          • Mar 2015
                                          • 23
                                          • USA

                                          #40
                                          Re: Vizio e601i has no backlight

                                          Originally posted by Agent24
                                          You may find some video on YouTube or such
                                          Been there...That's why I'm asking as I am unable to locate the info myself.

                                          Comment

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