Vizio E550i-B2 55" LED TV 1920x1080, 120 Hz, HDTV Logo

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Karl Sasso
Karl Sasso Posted on Feb 11, 2017
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I'm trouble shooting my Vizio e550i-2b It has power no backlights, image can be seen with a flashlight, I've replaced led driver board and problem persists, do you suggest main board next?

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  • Posted on Feb 12, 2017
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If you can see an image with a flashlight and you can control the tv with the remote then the main board is not the problem. You've replaced the LED driver board, so that leaves the LED strips inside the LCD panel as the likely problem.

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Sp Gupta

  • 727 Answers
  • Posted on May 04, 2016

SOURCE: I have a Vizio E550i-b2 55 LED TV. I have no LED backlight. When I hold a flashlight to the screen I can see the images and I have sound. I was going to replace the LED driver? Thoughts??

Hi Jimmy,
If I may suggest, before changing, please check that the inverter board is producing the necessary voltage to drive the backlights or not. If the board is producing the necessary power and still the backlight is not coming on, there is possibility that some of the LEDs in the backlight array have failed.

Testimonial: "No matter which HDMI input I use the screen is totally black again. The apple tv works fine on a different Vizio TV with a different HDMI cable."

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Derrick Gee

  • 3 Answers
  • Posted on Aug 31, 2016

SOURCE: Vizio E550i-b2 TV has no backlight, pic or sound. Replaced power and Main boards - still having the problem. Any suggestions? I have the TCON and LED Driver board left

The led is what makes the picture try replacing that it it's the only one you didn't change out

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1helpful
1answer

Need Vizio TV E550i-B2 repair board replacement suggestion, TCON or LED driver?
This model set has local dimming and not a lot of issues with backlights failing, but it has issues with connector CN202 having bad solder joints from the factory. Chances are there isn't anything wrong with your old board other than bad solder joints and I have a feeling the replacement you got has the same issues but only a couple of them are bad making most the lamps light. If you've able to solder and have an iron you can repair it yourself, a little free advice is use a lot of flux to keep the connectors from wanting to solder together as they're quite close to each other.
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Jan 10, 2022 • Vizio Televison & Video
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Does my Vizio E550I-A0 main board have a t-con board and led driver built into it?
Here is a video on how to test the voltage and troubleshoot the power supply and LEDs.

https://www.youtube.com/watch?v=UxR8-xztdGs
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Vizio 58" E550i-B2 Backlight is out. What needs to be replaced?
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Aug 23, 2021 • Vizio Televison & Video
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Good morning. I have a Vizio e550i-b2 with no picture or sound but I did the flashlight test and I can see picture. Any idea what I need to fix my issue. thank you so much
Hi,
This model develops bad solder joints on the connector between the power supply and the led driver board and loses backlighting. It's hard to believe, but the whole connection goes bad. All those pins supply only 24v and gnd. Resolder all of them and the tv will work.
It's the connector between that large yellow board (p/s) and the center green board (led driver).

25464bf7-ffef-4ea6-b854-2af6ee4a9464.jpg
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May 08, 2017 • Vizio Televison & Video
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I have a Vizio E550i-B2 and the screen went blank, I do still have sound. I did the flashlight test and I can see the screen very dim. Would this be the LED driver board or power supply board?
Hi,
This model develops bad solder joints on the connector between the power supply and the led driver board and loses backlighting. It's hard to believe, but the whole connection goes bad. All those pins supply only 24v and gnd. Resolder all of the pins on the power supply half of the connector and the tv will work.
It's the connector between that large yellow board (p/s) and the center green board (led driver).


5_8_2017_3_54_57_pm-4geh5w0df5ixw3m0y3nq5uyg-2-0.jpg
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Apr 16, 2017 • Vizio Televison & Video
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Backlight out on vizio E550i-B2 do i replace the led driver or power board or both. there IS sound and you can see the picture with the flashlight test?
I would replace both boards
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Dec 19, 2016 • Vizio Televison & Video
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Vizio E550i-b2 TV has no backlight, pic or sound. Replaced power and Main boards - still having the problem. Any suggestions? I have the TCON and LED Driver board left
The led is what makes the picture try replacing that it it's the only one you didn't change out
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Aug 30, 2016 • Vizio E550i-B2 55" LED TV 1920x1080, 120...
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I have a Vizio 55" LED Smart TV (E550i-B2) that keeps blowing LED driver boards.
What is the part number that you are replacing each time
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Jul 29, 2016 • Vizio E550i-B2 55" LED TV 1920x1080, 120...
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Backlight for tv
One or more of the LED backlight strips behind the LCD have failed. Difficult and sometimes expensive to fix.
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Jul 08, 2016 • Vizio E550i-B2 55" LED TV 1920x1080, 120...
0helpful
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I have a Vizio E550i-b2 55 LED TV. I have no LED backlight. When I hold a flashlight to the screen I can see the images and I have sound. I was going to replace the LED driver? Thoughts??
U are on the right track - problem is caused by the board that drives the backlighting - the inverter board.

If you can get the number for the board it may be available on the cheap on ebay.
Read full answer
May 03, 2016 • Vizio E550i-B2 55" LED TV 1920x1080, 120...
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E550i-B2 55" LED TV 1920x1080, 120 Hz, HDTV

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Need Vizio TV E550i-B2 repair board replacement suggestion, TCON or LED driver?

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