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TV is Vizio E55-E1. The backlight started going out in the upper left corner and spread to most of the left third of the screen. Is this likely a problem with the driver board or the LEDs themselves? Thanks.

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Brad Brown

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  • Vizio Master
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With only part of the display being dark, the problem is the individual led lights. They usually come in strips that you can purchase from places like shopjimmy,com

Posted on Nov 25, 2020

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I have a Vizio E470i-ao smart TV. On the left hand side mostly bottom left corner it dims out every two seconds and then returns to normal after two seconds. Constant pattern like a neon sign blinking....


Its likely the power supply. They are notorious for problems. The backlight is powered in quadrants. Your lower left quadrant is failing. I love fixing things but Vizio is nothing but trouble. I wont even work on them they are so poor to repair.
If you are handy, check the power supply for the backlight for bad solder. If it looks ok, then Id use it until it goes bad again.

Dec 25, 2017 | Vizio Televison & Video

1 Answer

Vizio 55" E55-C2 LED backlight issues. Was working fine until one day half of the screen's backlight stopped working and so half of the TV shows good and the other half is darker. Tcon or LED driver?


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Apr 13, 2016 | Vizio Televison & Video

1 Answer

How to fix? power on white light on no backlight no video cannot turn power off


most likely the main board, BUT not a guarantee. one of the ways Vizio keeps the cost low is by high integration and low parts count. with minimal daughter boards.

Apr 03, 2016 | Televison & Video

1 Answer

My TV isn't displaying sound or picture, how do I fix this?


Assuming your PS is fine then I would look at the main board since it works with the audio and video signals. The T con board is video specific and you have backlighting. So..............

Nov 17, 2015 | Vizio 60" E601I-A3 Full HD LED-LCD TV

1 Answer

My Vizio TV has dark spot top left corner


Hi Brandon,
I am afraid that the dark spot in the screen is not repairable. Manage as long as you can or go for a new tv.

Apr 08, 2015 | VIZIO M701d A3R 70 Inch 1080p Smart

1 Answer

Vizio 55" Inconsistant Dark Screen


you have to open the back cover to check weather the screen back light need replacement. usually if the lamp is almost black in color it needs replacement. the backlight is covered with metal shield installed at the upper portion and lower portion of the panel of the tv.

Nov 01, 2012 | Vizio VF Televison & Video

1 Answer

I have a vizio 46 in lcd model # VW46L FHDTV10A and it started with the whole left side going dark and then it would get better after an hour or two. then about a week later the entire left side of the...


I would suspect the backlight inverter is faulty:

I would try to look on the power supply first for popped capacitors that supply the 24v rail for the backlight inverter.

Having sound is a positive when it comes to repair. This means that only your screen is not lighting.

If you repair the 24v line and check the 5v feed also going to the BN_on (on) the backlight inverter and you still have no picture...you will need a new inverter.

This could also be the CCFL bulbs that are aging and need replacement. Those are around $20 each for a bulb

Hope this helps! Please rate :)

Mar 14, 2011 | Vizio VW46LFHDTV10A 46 in. LCD TV

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