Vizio U9 & U33 regs

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  • howardc64
    Vizio M65Q7-H1 Red Vertical Strips fixed by tape blocking LC1 signal to half of the panel
    by howardc64
    Failure Symptom



    No picture, just red vertical stripes. Google search shows quite common problem for these recent Vizio M series although red vertical stripe pattern may differ. Some call it "Netflix" boot screen haha.

    Where is the short?

    Panel has 4x buffer boards. Quickly found the 1/4 panel buffer board with the problem by selectively disconnecting buffer board flex cables.



    Having recently fixed another Vizio with similar symptoms that was a shorted ESD diode array ( link ) Probed the ESD diode array but...
    05-27-2025, 02:56 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
  • tmhobadcap
    VIZIO M60-C3 Can the vertical line be fixed?
    by tmhobadcap
    I am trying to help my friend to fix his Vizio tv with a vertical line on the screen. The line is on the right side. It is blue/purple on the right side starting from the top. But it only goes to about 3/4 of the screen height (not to the bottom of the screen). It is very obvious when the screen is dark and it is hard to be seen when the screen is bright. Please help....
    02-05-2023, 03:37 AM
  • 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
  • jason123
    Vizio M70-C3, P602ui-B3, M80-C3,... Anyone fixed the main board?
    by jason123
    Hi folks,
    I'm seeing more and more of the P602ui-B3, M70-C3,... coming in with the same symptom: TV appears to turn on (front LED activity, fades off), but no picture, backlight or..

    Replacement of the main board has fixed every one of these. These boards are becoming more and more expensive. boards warm up (heatsink fairly warm / hot)

    The common issue is if you monitor a USB board connected to this main board, or the Optical Audio red light, i consistently seems to be rebooting after almost exactly 60 seconds (red Audio LED, and front LED go off, then back...
    03-13-2021, 08:42 AM
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