I bought a Vizio E421VA LCD TV in hopes of repairing it, having fixed several LCD and Plasma TVs in the past . I have replaced the main board and the PC board. I have verified that that the power supply is producing 5V, 12V, and 24V. The TV powers on. The Vizio badge on the bottom of the bezel lights up. I get the VIZIO splash screen for a few seconds. The screen then goes blank with the backlight on. I then get two thin vertical lines towards the outer portion of the screen. These lines vary in color, sometimes orange, sometimes purple, and sometimes green. The menu does not appear on the screen when the menu button is pressed. I suspect the LCD may be bad but I am confused because the VIZIO splash screen renders perfectly. Would this happen on a bad LCD? Any help is greatly appreciated.
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Re: Vizio E421VA - Blank Screen w/ Two Thin Vert Lines
Could be as simple as the t-con board and you could have also gotten a bad main board. Was there any change in behavior from the original main to the replacement? If the logo is appearing you should be able to get some type of issue on the panel even if it has a defect. -
Re: Vizio E421VA - Blank Screen w/ Two Thin Vert Lines
After closer observation it appears I have purchased the wrong main board. I'll post the results once I obtain the correct board. Thanks for the feedback.Comment
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Re: Vizio E421VA - Blank Screen w/ Two Thin Vert Lines
More likely just bad main board as you get correct logo.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio E421VA - Blank Screen w/ Two Thin Vert Lines
According to the seller I bought the main board from, there are two boards for this model and they are not interchangeable. I matched my board with what they had pictured in the listing yet what I got appears to be the other board. I didn't notice the difference until I posted here and looked closer for information gathering purposes. I wanted to be prepared for any questions I might get asked.Comment
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I picked up a Vizio E70-E3 for free that shows Vizio logo and then goes to a black screen. Original owner said he started having wifi issues and then he tried to reset the TV and that's when it wouldn't boot up any longer after his reset attempt. I picked up a replacement main board from eBay that matches the same model # board as the original from the TV.
Original main board - Shows Vizio logo when TV powers on, then goes to black screen. Doesn't boot up. No screen issues with any lines on start up Vizio logo.
Replacement main board - Boots up fine, but starting... -
I got this tv yesterday and it shows a screen full of colored vertical bars and horizontal lines that move, change, and dance around. When the set is powered on there is a slight buzz from the tcon. I removed one ribbon at a time and this was the result:
Right side connected, left side disconnected = half image on right (somewhat distorted, see photo attached) white screen on left. NO buzzing from TCON
Left side connected, right side disconnected = right side black, left side white with distorted horizontal lines near top of screen. Buzzing from TCON
I swapped... -
I recently replaced the led backlights with LB65041 LED Backlight Strips and after putting it back together the backlights work but there are only colored vertical lines only in the center of the tv. I can see the Netflix logo (jumbled) after a minute or less the screen went dark. When I turned it on again the lines were back. Then I replaced the t-con board but the same vertical lines in the picture. My question is what is my next step? Could it be a source tab bond issue? A buffer board issue? Could I have loosened a connection to the panel when replacing the backlights? Should I replace the... -
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?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... -
Hi guys, I have a Vizio M58Q7-J01 and now there are some colored horizontal lines on the screen. Could someone tell me if it's probably a panel issue or something related to other parts and can be fixed? Thank you in advance....
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