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Ordered Vizio 056.04167.0001 Power Supply / LED Driver for E550I-B2 the sound worked before switching it out, but picture did not. Installed part & picture only stayed on for a few minutes & no sound.

Chris Berline Mar 27, 2017

I switched it back to my old board and the tv comes back on with no picture until you do the flashlight test. I guess it's the led driver?

1 Answer

shaun taylor

Vizio Master 1,527 Answers
Posted on Mar 27, 2017

shaun taylor

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Joined: Jan 10, 2009

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Hi the led in the panel may have shorted out thanks

shaun

1 Related Answer

The Knight

76851 Answers
Posted on Feb 16, 2017

SOURCE: Vizio e550i-b2

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://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.

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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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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).

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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).

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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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Visio E550i-B2 Have sound but no picture. Did a flashlight test and I see an image. Google search results point to bad LED driver but I would like a second opinion. Thanks

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/
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.

Read full answer

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