Vizio m422i-b1 no channels

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Malachi
    Badcaps Legend
    • Dec 2015
    • 1077
    • Usa

    #1

    Vizio m422i-b1 no channels

    Just picked this tv up for free. All hdmi inputs work but the tv does not find any channels when scanning with cable. I haven't tried with an arial antenna.

    Is this a main board issue? EEPROM?
    I searched on here but didn't find anything.
  • SLK001
    Badcaps Veteran
    • May 2014
    • 264
    • USA

    #2
    Re: Vizio m422i-b1 no channels

    Plug a 36" length of 18-20 ga wire in the antenna jack and scan for local channels and bend it vertically. You have to select antenna in the setup (somewhere). If it doesn't find any, I would suspect the tuner itself.

    Comment

    • Malachi
      Badcaps Legend
      • Dec 2015
      • 1077
      • Usa

      #3
      Re: Vizio m422i-b1 no channels

      I have antenna I can try. Just have to dig it out.

      Comment

      • Malachi
        Badcaps Legend
        • Dec 2015
        • 1077
        • Usa

        #4
        Re: Vizio m422i-b1 no channels

        Just tried the antenna. It picks up local channels. This is strange.

        Decided to try to scan for cable channels for the third time and it tuned them in.
        Last edited by Malachi; 09-10-2019, 12:29 PM. Reason: Added info

        Comment

        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...
          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
        • 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
        • howardc64
          Vizio SmartCast TV software bug that looks like hardware
          by howardc64
          Bug looks like hardware so thought I posted it here. Exact same behavior on 2 different model 4K Vizio TVs running their SmartCast smarttv software. After launching youtube app, press vizio button on remote to return to the smarttv menu, once in awhile, a column of bad pixels will show for few seconds on the left hand side.



          It seems the vizio software is reinitializing hardware when returning to the smarttv menu. In general, SmartCast software isn't very good. Also will randomly (relatively infrequent) get no network connection when on wifi and require reboot....
          11-16-2024, 05:17 PM
        • Loading...
        • No more items.
        Working...