Vizio VO42L - Red Fuzz

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • mchamb
    Member
    • May 2015
    • 12
    • USA
    #1

    Vizio VO42L - Red Fuzz

    Hi everyone,
    I have a Vizio VO42L FHDTV10A with a problem that I can only describe as intermittent at best, and what happens is, the dark areas of the screen start turning red and fuzzy. I havent been able to find a whole lot of information on this through typical google searches, nor here. Im capable of testing anything that needs be tested, and probably replacing as well, I just need a starting point of what someone might think the problem is, and what i can test to verify. Attached are some pictures of the problem.
    Attached Files
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Vizio VO42L - Red Fuzz

      Did you try reseating the cable on the T-CON board?
      Need to see the pictures of the T-CON board, I would say T-CON board 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

        • mchamb
          Member
          • May 2015
          • 12
          • USA
          #3
          Re: Vizio VO42L - Red Fuzz

          I hadnt yet no, but, I will most certainly crack it open and do it now! I believe from checking out the links in your signature that this is what you are referring to, correct?
          http://x.co/9SdBc

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: Vizio VO42L - Red Fuzz

              Originally posted by mchamb
              I hadnt yet no, but, I will most certainly crack it open and do it now! I believe from checking out the links in your signature that this is what you are referring to, correct?
              http://x.co/9SdBc
              That is the T-CON board but there are more than one version of this TV model, your TV may not use LG LCD panel or LG panel but different version, so you need to verify.
              http://www.shopjimmy.com/catalogsear...VO42L+FHDTV10A
              Last edited by budm; 05-12-2015, 09:56 AM.
              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

                • mchamb
                  Member
                  • May 2015
                  • 12
                  • USA
                  #5
                  Re: Vizio VO42L - Red Fuzz

                  If you need a better Picture of a certain area, i can do that, i wasnt really sure what i was looking for, other than that nothing looked visibly fried or otherwise damaged...
                  Attached Files

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA
                      #6
                      Re: Vizio VO42L - Red Fuzz

                      OK, this T-CON does not use the typical GAMMA IC AS15/AS19 IC.
                      So did you try re-seating the cable between the T-CON and the main board?

                      This is your T-CON board:
                      http://www.shopjimmy.com/lg-philips-...-con-board.htm
                      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

                        • mchamb
                          Member
                          • May 2015
                          • 12
                          • USA
                          #7
                          Re: Vizio VO42L - Red Fuzz

                          done. it did seem kinda.... off at best.. anything else worth looking at while i have it open? problem was very intermittent so ill have to turn on and off for a day or so to see if i can reproduce it again.

                            Comment

                            • mchamb
                              Member
                              • May 2015
                              • 12
                              • USA
                              #8
                              Re: Vizio VO42L - Red Fuzz

                              Seems to be working thus far, ill post here again if it starts exibiting symptoms again

                                Comment

                                • mchamb
                                  Member
                                  • May 2015
                                  • 12
                                  • USA
                                  #9
                                  Re: Vizio VO42L - Red Fuzz

                                  seems to have fixed the problem, thanks!

                                    Comment

                                    Previous template Next

                                    Related Topics

                                    Collapse
                                    • Tynan Dill
                                      Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
                                      by Tynan Dill
                                      I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

                                      Upon bringing it home and plugging it up, it showed a standby light.

                                      I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

                                      The screen seems to blackout and stay black, but with a flashlight I can see the display.

                                      With my Playstation 4 connected via HDMI, and running a game I can hear sound.

                                      Assuming...
                                      ORIGINAL POWER SUPPLY BOARD
                                      7 Photos
                                      11-22-2024, 01:46 PM
                                    • SS454
                                      vizio e650i-a2 backlight flashes then turns off
                                      by SS454
                                      vizio e650i-a2 (LWJAOZBP Serial) led backlight flashes then turns off, has video (via flashlight) and audio.

                                      panel: au optronics T650HVN05.4
                                      72 led total on 12 strips, 6 led per strip wired in three groups of 24 (led driver board has three anode and three cathode pins)
                                      link to datasheet: https://datasheetspdf.com/pdf-file/8.../T650HVN05.4/1

                                      Vizio 56.04219.641G (liteon PA-3231-01WN-LF) Power Supply Unit
                                      https://www.shopjimmy.com/vizio-56-0...-power-supply/

                                      Vizio 55.75J01.001G (91.75J10.004G) Main Board...
                                      08-20-2020, 03:57 PM
                                    • mrtek
                                      Vizio M65-C1
                                      by mrtek
                                      Hi.

                                      picked up another TV. This time is a Vizio M65-C1. TV does not turn on. I had repaired another 60 inch vizio , Bad main board.
                                      When power button is pressed, the Power led indicator on the bottom right, turns for a few seconds and then it fades away. No backlight or Vizio logo on screen. Removed back cover and repeated test.
                                      This is the TV This TV is a little different from the Samsung I have worked on. Power supply is on the Left side, Main Bd is on the right side, T-CON , not in the picture is on the bottom. I am assuming that the boards in the middle are the LED...
                                      07-14-2025, 07:28 PM
                                    • ChillingCicada
                                      Vizio VO42L Issues: Need Guidance
                                      by ChillingCicada
                                      We've had our Vizio VO42L since before 2010, and it's worked flawlessly this entire time. However, just recently it started emitting a high-pitched buzzing/humming sound. I followed the basic troubleshooting tips of just unplugging it for a moment, and even holding down the power button while doing so, all to no avail.

                                      Furthermore, after I attempted these basic steps and powered the TV back on it would always begin visually flickering while the sound stuttered. After a few moments of being turned on this would go away, but it still periodically comes back.

                                      I also...
                                      06-09-2021, 05:47 PM
                                    • Daveleone
                                      Vizio VO42L, white logo, no backlight, no picture
                                      by Daveleone
                                      Hi all! I've got a Vizio VO42L. Plug it in, and logo flashes orange/white for a bit, then solid orange. Press power, and logo changes to white. There is no backlight.
                                      From reading some of the posts here I thought the inverter could have been the problem, but I've replaced it and still have the same issue. I noted that shining a flashlight on the screen shows nothing, so now I'm thinking main board?

                                      I took the following readings with the TV powered on. I also tried taking the readings with the CFL connectors unplugged - no change.

                                      Main board:
                                      Continuity across...
                                      02-20-2021, 04:52 PM
                                    • Loading...
                                    • No more items.
                                    Working...