⟐ Answer edited February 01, 2021 at 18:08 MST

Ordered a new board and put the new one in Saturday. Now (Monday night) the same thing is happening all over again to the brand new board!

Here’s a picture of the other side

Thank you turkey! Here’s a pic of the whole side of that board in case that’s helpful:

⟐ Commented April 07, 2021 at 15:13 MST

⟐ Answer accepted March 12, 2019 at 19:34 MST

I can't replicate the exact behavior with regards to duration of the power-on state. Sometimes the TV fails to turn on. Sometimes its power LED will light and then fade. Other times the TV will behave as expected before generating the "No Signal" box and powering down with backlighting from power-on to sudden shutdown.

Someone else tested the voltages going from the power board to the video board, and I remember him saying the 5V standby was present. We did not test voltages going from the power board to the LCD strips.

Caps have not popped and at least one is by Chemicon.

We tested the power cord and got continuity even when twisting the cord (at both ends).

Friend who tested voltages from power board to video board was thinking there's something wrong with the keyboard controller board (POWER button/swtich, change input, menu navigation, etc.). He thought a bad power board would at least give consistent behavior, even if that behavior didn't lead to a working TV.

I am also aware of a bad EEPROMS, too. I am not sure how to test such an EEPROM:

What else should I examine and diagnose further?

⟐ Answered January 08, 2018 at 22:29 MST

I have a 42 inch Vizio TV (model number: E3D420VX). The issue at hand is that sometimes when I turn the TV on, it has a black and white picture. The TV plays whatever I’m watching (it also has sound when it does this) but just in black and white, no color. It goes back to normal after turning the TV off and then back on. It doesn’t do this on a regular basis though; it usually does it every now and then. the TV was purchased new in 2012 I believe around when it was first released. I think it may be worth knowing that this particular TV is mounted on the wall.

Thank you for all your guys’ help!

⟐ Commented July 23, 2023 at 12:31 MST

⟐ Commented November 20, 2023 at 11:04 MST

⟐ Answer edited July 03, 2022 at 22:01 MST

⟐ Comment deleted March 15, 2020 at 13:11 MST

I opened the back of the TV to look at the boards and the pictures of each board are provided.

any help would be appreciated!!

⟐ Answer accepted November 24, 2021 at 9:23 MST

⟐ Commented March 19, 2024 at 22:44 MST

I know this because neither of our remote controls work and the exterior buttons do work. I have been told this circuit is on the main board. If so, can it be repaired? Do I need to replace the main board or is something else causing the problem? Thank you.

⟐ Answer edited January 20, 2024 at 8:21 MST

What could be wrong?

⟐ Answered February 25, 2023 at 1:25 MST

⟐ Answer edited May 25, 2022 at 14:47 MST

⟐ Answered April 17, 2022 at 8:24 MST

I guess I’m wrong about tv lens, but the screen was hit hard, & is cracked where it was hit, & have the vertical lines showing in that area. It’s a Vizio E 420, & the question is can this be repaired by tv repair stores?

⟐ Commented January 21, 2022 at 20:06 MST

⟐ Commented July 12, 2021 at 22:50 MST

⟐ Answer edited April 28, 2021 at 7:15 MST

I can still see what I’m watching but it’s just pink

⟐ Answered November 01, 2020 at 9:35 MST

I’m assuming that my toddler threw something and hit my 75” Vizio LED TV, but I wasn’t in the room at the time. The screen looks like this:

Is this something that can be repaired easily, or should I just be thinking about replacing it? It’s only 10 months old and still under warranty, but that obviously won’t cover the damage if it was my kiddo.

Thanks in advance!

⟐ Answer accepted October 06, 2020 at 20:02 MST