Vizio E420-A0 Horizontal Lines

[De3rcr]

I turned on my TV the other day and the screen had these lines that were shifting up and down. I re-seated the cables from the main board to the panel and there was no change. Should I buy a new main board or is it the panel?

[CapLeaker]

Re: Vizio E420-A0 Horizontal Lines

remove one side of the ribbon cable from the tcon to the panel, while leaving the other side plugged in. Check the picture then do the same thing vice versa.

[De3rcr]

Re: Vizio E420-A0 Horizontal Lines

When I disconnect the top cable from the board the screen is half black and half white and I can see some lines in the black half but not the white half. With the bottom cable disconnected same half black half white but I see no lines in the black half

[dskall]

Re: Vizio E420-A0 Horizontal Lines

Since you have no t-con I would say mainboard

[CapLeaker]

Re: Vizio E420-A0 Horizontal Lines

try this trick:
https://www.youtube.com/watch?v=j7vl7-vZEL8

[dskall]

Re: Vizio E420-A0 Horizontal Lines

try this trick:
https://www.youtube.com/watch?v=j7vl7-vZEL8

Can someone explain why this works.

[De3rcr]

Re: Vizio E420-A0 Horizontal Lines

try this trick:
https://www.youtube.com/watch?v=j7vl7-vZEL8

Don't know why it worked for him. But tried it and no help, guess it's time to order one unless there are any other suggestions?

[ReeceyBurger123]

Re: Vizio E420-A0 Horizontal Lines

Panel fault IMO.

[martino]

Re: Vizio E420-A0 Horizontal Lines

Don't know why it worked for him. But tried it and no help, guess it's time to order one unless there are any other suggestions?

You will have to experiment with how many tracks you block with the tape and which tracks. It takes time but it often does work.

[CapLeaker]

Re: Vizio E420-A0 Horizontal Lines

It's a panel fault. This trick does work but not always... unfortunately...
as martino already mentioned you have to experiment on which and how many tracks to cover. I thought it was worth a shot...

[De3rcr]

Re: Vizio E420-A0 Horizontal Lines

Got around to playing with tape widths and so far I found the right tracks to cover and the picture looks fine. It worked, don't know why, but go figure. Will see how long it lasts

[CapLeaker]

Re: Vizio E420-A0 Horizontal Lines

Good to hear!

[connedbycraigslist]

Re: Vizio E420-A0 Horizontal Lines

Got around to playing with tape widths and so far I found the right tracks to cover and the picture looks fine. It worked, don't know why, but go figure. Will see how long it lasts

Hi there, any chance you could share which tracks you covered? I'm afraid I just bought the same model and am having this issue. Thank you.

[nomoresonys]

Re: Vizio E420-A0 Horizontal Lines

You might have a long wait, that post 3 years ago was his last, you just need to experiment with how many you cover, some only need to cover a few on one end.

[connedbycraigslist]

Re: Vizio E420-A0 Horizontal Lines

You might have a long wait, that post 3 years ago was his last, you just need to experiment with how many you cover, some only need to cover a few on one end.

No worries, thanks for the response. Was just checking in case I couldn't get it. Hopefully no one else needs the information, but if they do... left one, towards the right side with a very small piece of post it worked for me. Covered maybe 4-7 pins. Thanks so much for keeping this place up and going!

[nomoresonys]

Re: Vizio E420-A0 Horizontal Lines

Nice work, thanks for feedback, I'm sure it will help someone else.