Vizio VL370M

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  • Ericdombrosky@gmail.com
    Member
    • Mar 2016
    • 15
    • United States

    #1

    Vizio VL370M

    Hi I recently acquired a Vizio LCD TV model VL370M and when i unplug it to hard reset sometimes it works perfect. then shortly after it has rolling colored line horizontally. I would think its the T CON board except most common is vertical lines. Ive been told bad Lcd screen but why would it work perfect sometimes? Pressing on the screen does not change any look at all. I have takin pictures of the different behaviors and hope i can post them here. (new to all this) Just wondering where you guys would start with this thing or if its a junk screen. Thanks!
    Attached Files
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Vizio VL370M

    It can be that the ICs on the flexible circuit board between the LCD glass panel and the long tab bonding circuit boards heated up and failed to function.
    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

    • Ericdombrosky@gmail.com
      Member
      • Mar 2016
      • 15
      • United States

      #3
      Re: Vizio VL370M

      Is there a fix or is it worth fixing?

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: Vizio VL370M

        If it is the IC problem, there is nothing you can do, you can try using a can of freeze spray to cool down the ICs some how to see if the problem will go away.
        Attached Files
        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

        • Ericdombrosky@gmail.com
          Member
          • Mar 2016
          • 15
          • United States

          #5
          Re: Vizio VL370M

          Ok so i finally got some cold spray. Started it up from hard reset, works perfect, warms up and starts acting up, spraying around and hit t con at one point, fixes it for a minute, cant replicate again on same reset cycle. Is it at all possible that t con board is causing the issues or the flex ribbon connecting it? If i leave it alone unplugged and go out tomorrow after it sat on hard reset the TV reliably works perfect for a minute or 2. Any thoughts?

          Comment

          • martino
            Not so "senior"
            • Aug 2013
            • 997
            • canada

            #6
            Re: Vizio VL370M

            I would be curious to see what happens if you start it cold,so it works perfect,then keep spraying cold spray at the t-con,to keep it cold(enough to keep it frosty) and see if you can keep it working good longer. That would tell you its tcon related,yes/no.
            Proud owner of dozens of broken TV's and many,many,many boards.


            Our website and passion:http://hollenhundshepherds.com/

            Comment

            • Ericdombrosky@gmail.com
              Member
              • Mar 2016
              • 15
              • United States

              #7
              Re: Vizio VL370M

              Thank you for your suggestion Martino, freezing the t-con seems to directly effect the picture and fix it. I am willing to take the risk on trying a new t-con board and hopefully end up with a fully functional TV. I was about to trash it because nearly everywhere states that horizontal lines such as the ones pictured above can not be t-con related. But alas the board on this particular set is not next too anything else so it has to be at the very least a part of the problem. Ill let you all know when the part comes in.

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #8
                Re: Vizio VL370M

                Do you have the pictures of the area of the T-CON that you freeze spray and causes the pictures to be normal again?
                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

                • martino
                  Not so "senior"
                  • Aug 2013
                  • 997
                  • canada

                  #9
                  Re: Vizio VL370M

                  I'd try between the freeze spray and a hot solder iron to pin point the component thats sensitive. Might be a single little resistor. making it a 25 cent repair !
                  Attached Files
                  Proud owner of dozens of broken TV's and many,many,many boards.


                  Our website and passion:http://hollenhundshepherds.com/

                  Comment

                  • Ericdombrosky@gmail.com
                    Member
                    • Mar 2016
                    • 15
                    • United States

                    #10
                    Re: Vizio VL370M

                    well the tv displays an different problem now, the old T-CON board seemed to had died. The screen only has backlight now. Replacment part came today, same problem. Any possible causes or suggestions? Not sure what else could make it seem like a T-CON issues, maybe bad main board? Where to start.

                    Comment

                    • martino
                      Not so "senior"
                      • Aug 2013
                      • 997
                      • canada

                      #11
                      Re: Vizio VL370M

                      Now we need a picture of the t-con board,as sharp and high resolution as possible. As per request of budm
                      Proud owner of dozens of broken TV's and many,many,many boards.


                      Our website and passion:http://hollenhundshepherds.com/

                      Comment

                      • Ericdombrosky@gmail.com
                        Member
                        • Mar 2016
                        • 15
                        • United States

                        #12
                        Re: Vizio VL370M

                        here's the old one
                        Attached Files

                        Comment

                        • Ericdombrosky@gmail.com
                          Member
                          • Mar 2016
                          • 15
                          • United States

                          #13
                          Re: Vizio VL370M

                          the used replacement
                          Attached Files

                          Comment

                          • Ericdombrosky@gmail.com
                            Member
                            • Mar 2016
                            • 15
                            • United States

                            #14
                            Re: Vizio VL370M

                            the main board
                            Attached Files

                            Comment

                            • Ericdombrosky@gmail.com
                              Member
                              • Mar 2016
                              • 15
                              • United States

                              #15
                              Re: Vizio VL370M

                              does anyone know how to access the ribbon cable, the screen side on this model to try and reset the connections?
                              Attached Files

                              Comment

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