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Question regarding a Vizio E470I-A0. Problem started with sound but no picture and now is no sound or picture. Thanks,

Tested the standby power and have 5.2VDC. Tested the backlight and remote on/off pins and have 3.1VDC, the 12VDC pins 6 & 7 have 12VDC. When I tested the Out 1 and Out 2 pins for the LEDs, the voltage goes to 130VDC as soon as the power button is pressed, then drains down and settles at 66VDC. I don't see any backlights on. Can you help identify the faulty board or pieces on a board.

Posted by Anonymous on

5 Suggested Answers

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Posted on Jan 02, 2017

Fujitsu
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SOURCE: Vizio VX37L HDTV10A no picture

Hi.
You need change the Main board. You have a micropros. problem.

Posted on Aug 20, 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

  • 12565 Answers

SOURCE: I have a vizio E470i-A0.I came home to sound no pic.Tested with DC volts and have 130 volts on "vout1&2".If the leds are bad and unplug conector that has "vout1&2"shouldn't the voltage drop to100?

Keep it simple- Use the flash light test to see if you have no back lighting in which case then you have to replace the inverter board. And if it is not that board then your issue probably lies with your t con board.

Posted on Mar 03, 2016

emissionwiz
  • 75797 Answers

SOURCE: what dc voltage should a power supply board put out to the LED's on a Vizio E470i-A0 TV...power supply board part number is 0500-060500270

It is 12 volts and also 24 volts DC, never check it without a load on it as it can damage the inverter circuit.

Posted on Dec 15, 2016

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Vizio E470i-A0 not powering up, the standby led comes on momentary when the pwr button is pressed. The voltage on led1/led2 would spike to 130v when powered then bleed down. Are my led strips are bad?


Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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Vizio e470i-a0 has a blank screen but has sound.


The led strip is faulty. Normally it's comes with the panel.
If you wish to know bout the Woking of back light LED the check the below added link.
www.electro-medical.blogspot.com

Jul 01, 2016 | Vizio Televison & Video

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Vizio TV has sound but no picture


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.

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Vizio e470i-ao no picture just sound what part do i need


Measure all the voltages coming off the power supply board first. Then move to the board that controls the picture. This board has one or two wide flat flexible cables running form it to the bottom of the screen.
TV Parts Universal TV Stands DLP Chips ShopJimmy You can get all the parts you need here.

Jun 05, 2015 | Vizio Televison & Video

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To fix no video Vizio E470i-A0 TV


Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

May 21, 2015 | Vizio Televison & Video

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