Vizio M470NV Problem

Collapse
X
Collapse
+ More Options
Posts
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • micon87
    New Member
    • Jul 2012
    • 3
    • USA
    #1

    Vizio M470NV Problem

    (1). When I powered on my TV all I see is the vizio logo. I cannot access any menus using the remote, nor can I turn the TV off. The TV then turns off by itself and the power flashes orange and white for roughly 90 seconds then it turns back on and the logo shows up again. It repeats this like an infinite loop.

    (2). I tried the typical unplug for 10 minutes. When i plugged it back in the power flashed orange and white for ~90 seconds then went to solid orange. When I turn it on it just keeps doing what i previously stated in (1).

    Any ideas? I opened it up and check out the 3 boards but don't have a meter at my place currently so I didnt do any continuity testing. Curious if anyone has run in to this problem.

    Thanks for any help.

    Mike
    Tags: None
    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271
      #2
      Re: Vizio M470NV Problem

      Many Vizios are plagued with bad voltage regulators. It would be a good starting point to test your voltage regulators. Search this forum for "U33 Vizio". I'm sure I have written procedures on how to test them.
      --- begin sig file ---

      If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

      We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

      Please do not post inline and offsite as they slow down the loading of pages.

      --- end sig file ---

        Comment

        • micon87
          New Member
          • Jul 2012
          • 3
          • USA
          #3
          Re: Vizio M470NV Problem

          I tested U24 on standby.
          Vin - 0V
          Vo - 0V

          When I have brief power showing the vizio logo on screen.
          Vin - 12V
          Vo - 5V

          The other U's are buck converters I believe.

          Stock image attached.
          Attached Files

            Comment

            • retiredcaps
              Badcaps Legend
              • Apr 2010
              • 9271
              #4
              Re: Vizio M470NV Problem

              Originally posted by micon87
              It repeats this like an infinite loop.
              Try a firmware update. Or maybe it is a result of a firmware update gone bad?

              http://www.amazon.com/review/RI1P294..._res_rtr_alt_1

              And with some searching effort ...

              http://www.fixya.com/support/t869293...urchased_while
              Last edited by retiredcaps; 07-12-2012, 12:10 AM.
              --- begin sig file ---

              If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

              We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

              Please do not post inline and offsite as they slow down the loading of pages.

              --- end sig file ---

                Comment

                • micon87
                  New Member
                  • Jul 2012
                  • 3
                  • USA
                  #5
                  Re: Vizio M470NV Problem

                  Yeah, I called vizio and they had me do the reset by unplugging the TV and holding the power button for 30 seconds.

                  No change in behavior.

                  I also tried leaving it unplugged all night. Then I plugged it in and gave it ~10 hours before trying to turn it on.

                  No change in behavior.

                  Tonight I will upload some pictures of my board. I could not find anything visually wrong with the Caps.

                  I will also try to try another firmware reset and see what happens.

                  My friends vizio had a similar thing happen with the flashing orange to white and not coming on. But it reset and worked after 10 minutes of being unplugged.

                    Comment

                    Previous template Next

                    Related Topics

                    Collapse
                    • Super360
                      Vizio E701i-A3 Vizio logo flashing then turns off
                      by Super360
                      Ok so here's the story. I was watching tv one day when all of a sudden I heard a pop from the back of the tv set and rushed to unplug the set. By this time the tv already had smoke coming out the back. It was not storming or inclement weather that day to cause a power surge to the best of my abilities. When I opened the tv up, I found that the three capacitors on the psu (highlighted in red) were all bulging and looked they had exploded. I replaced all of them right away and when I went to start up the tv after the "fix" it started just showing the flashing vizio logo as soon as power...
                      07-25-2024, 07:06 PM
                    • rajbot
                      No Power problem with Vizio E60-E3
                      by rajbot
                      Hi all:

                      I have a Vizio E60-E3 I am trying to troubleshoot a no power problem with. Thanks to the help on this board and elsewhere, I was pretty sure I had narrowed it to a power board problem. The board in question is a 09-60CAP0D0-00. Image attached for reference, but not of my board (tv is put away at the moment). FWIW, no obvious looking issues with the board.

                      I measured voltage at power in and on the fuse and saw 120V, so power is getting to the board.

                      On the pins out to the main board, I got no voltage at all on any of the pins. I assumed this...
                      03-22-2023, 08:09 AM
                    • x_orange90_x
                      Vizio V555-G1 stuck on wallpaper; now stuck on V logo
                      by x_orange90_x
                      I just got this tv today and it's getting stuck on the wallpaper. When I first power it on it goes to the V logo, then a black screen for about 15 seconds, then a Chromecast error for just a few seconds, and then finally to a wallpaper. It stays frozen on this wallpaper and does not respond to anything on the remote besides power on/off. Likewise the buttons on the tv do nothing either (besides power). I did the "reset" by holding the volume down and input buttons together for 10 seconds. It showed a message at the top of the screen saying it was Wiping Data and would restart soon. After...
                      12-28-2023, 06:26 AM
                    • theone111
                      Problem with LG Plasma 60PM6700 - Random power downs
                      by theone111
                      I have an LG Plasma TV 60PM6700 for the past ~12 years.

                      In the last ~3-4 months I have been having some issues.
                      1. Problem: It started with random picture disappearing (sound still worked).
                        Frequency: Happened about once a week.
                        Solution: Had to turn off TV wait a few seconds before turning it on again.
                      2. Problem: Then it got worse and the TV started to shut down and when turning on the no picture just sound.
                        Frequency: Happened about once a week.
                        Solution: Had to turn off TV wait about 10-20 seconds and turn it on again to solve.
                      3. Problem: TV shuts down
                      ...
                      1 Photo
                      07-22-2024, 10:36 AM
                    • MICHAEL_2013
                      Change Logo Aptio Setup Utility 2021 (ROM Layout mismatch detected) Problem
                      by MICHAEL_2013
                      Good afternoon, Lords of great wisdom. My problem is the following: I bought a Chinese laptop with GN117_MB_V31-T board. (Aptio Setup Utility 2021) (There is no info for that board). And I want to change the logo of the bios. I have used Aptio_V Afuwin to do the bios Backup, then I change the logo with AMI ChangeLogo Tool v5.0.0.2 and everything seems perfect. But when you restart the new logo appears ok. But it automatically enters the bios, appearing a new option RECOVERY, ROM LAYOUT MISMATCH DETECTED - PARTIAL UPDATE IS NOT ALLOWED. If I give ESC it enters windows without problem but always...
                      06-28-2021, 03:12 PM
                    • Loading...
                    • No more items.
                    Working...