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I have a vizio E550i-b2 that will not power on. There are no lights or sounds when power is plugged up and nothing happens after pressing the power button on the remote on the tv.

No blown fuses, capacitors, or other components on the power board or other boards. I've tested the standby power which is 5v and I get 5v when the mainboard is connected and when it isn't. The mainboard is heating up when power is applied to it so it's definitely getting. I inspected to power cable which seems to be in tact. I'm not sure what other troubleshooting I can do.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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  • 2 Answers

SOURCE: TV does not power on. No Stand by light either.

take a picture shw me the top capaitors .. you will be able to see if one is blown..

replace it and it should work!

Posted on Nov 17, 2008

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ginko
  • 19396 Answers

SOURCE: VIZIO GV42LHDTV Got TV after

Hi.

If the TV does not start with the new audio board, and if it does start with the old one, then the audio board that you recently purchased is defective.

About the board : 0500-0507-0230; that is the power board (PSU). If you could see the Vizio logo, that means that TV started, and that the power board was OK without need for testing. When the power board is defective, either the TV does not give any sign of life, or the TV goes in standby mode from start and does not wake up. In that case the led stays blinking to warn you that there is an incorrect voltage from PSU.

If the TV is freezing with Vizio logo, that means that at most the faulty part is the main board.

Also, you say that there is no backlight. No backlight means that the screen is completely dark. If there is no backlight you won't be able to see the logo or any other picture.If there is no backlight, then the problem is usually the inverter.

Here a brief article summarizing how to test PSU and inverter: How to test an LCD TV.

Here all parts for this model:GV42LHDTV.

Regard.

Ginko.

Posted on Feb 11, 2011

  • 5 Answers

SOURCE: Vizio VT470M no picture, no sound, no backlight. Power supply board looks good all voltages appear correct.

Im having similar problem and with my limited knowledge of lcd tvs and the voltages ALL being good except the pwr on or sw on voltage from the main board to the power supply which tells it to switch everything on Im guessing that something is going wrong on the main board. In the condition where it freezes it (the power on V) which switches everything on i get varied voltages such as 2.5 or 3 or (the normal 5v) and then when nothing powers up (blank screen) i read 0v on pwr on voltage but all my other voltages are corect (24v to inverter, 12 v to main board, 5v, etc.) Im guessing from researching this is that there is in improper voltage somewhere in the main board circuit. I have been unable to find it so i may order another board and post back.

Posted on Aug 21, 2013

  • 10543 Answers

SOURCE: My 50 Samsung Plasma TV lost picture, but still had sound. Replaced capacitor on Zsus and had Y-sus buffer up serviced. Still no picture and maybe a power problem. Any troubleshooting suggestions?

Make sure the power board are producing the correct voltages = or - 10 %. Look for domed electrolytic capacitors too. You can get repair kits and complete boards from here: TV Parts Universal TV Stands DLP Chips ShopJimmy

Posted on Feb 02, 2016

Testimonial: "Thanks - Thus far I have only checked the standby voltage to the main board. I also found this link with a tutorial to check the other voltages. The nice thing about this ink is that they are demo-ing it with the same Samson Plasma TV. https://youtu.be/GReg9cPDP-c Thanks again."

  • 3 Answers

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

Posted on Aug 31, 2016

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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.
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