Vizio e320-a0 backlight is out. how can i find out if its the light bars or the board?

SOURCE: My vizio E370VLE is getting no power at all. The vizio logo under the screen isn't even lit up. I have tried plugging into new outlets and even switch out the power cord with a new one so i know its n

the problem is probably your main power board.. these can be replaced by yourself.. find the model no and then enquire about a replacement board ..I have had similar problem tv repairman wanted $500+ to fix board only cost $134..make sure to disconnect power supply ..undo all the screws around back of case including wall mount and base follow power lead entry into case do not touch any circuitry as some capacitors store power disconnect the little plugs that run from the boardundo the 4 screws and replace with purchased replacement board and re assemble..

The Knight

• 76851 Answers
• Posted on Nov 17, 2015

SOURCE: How do i fix a black screen? Vizio thinks its the back light and Nothing looks swollen, burnt, or loose. have the back cover off. I don't know Which board to remove to get to the back light.

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.

L Pfaff

• 11573 Answers
• Posted on Mar 10, 2016

SOURCE: vizio E420I-A0 Black Screen

Check the attached links,
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."


Vizio E470i A0 Blank Screen No Backlights How to Test Power Supply...
Testing TV Backlight LEDs
Testing tv backlight leds EsBuzz net
http://www.badcaps.net/forum/showthread.php?t=41334

The Knight

• 76851 Answers
• Posted on May 27, 2016

SOURCE: VIZIO E320-BOE IS BACKLIGHT INVERTER AND T-CON BOARD BUILT ON THE POWER SUPPLY BOARD?

If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/

Electro Med Services

• 6694 Answers
• Posted on Nov 29, 2016

SOURCE: Vizio E550i-A0: After 20 mins., there is a green flash and tv turns off... Changed power supply, NO GO.. Possible it's in the main board? Anyone else had this issue with a Vizio?

Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electro-medical.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
Counting of number of blinks to Philips TVs is entirely different to that of other brand TVs. It is not a direct count procedure. The site have details about how to count the number of LED blinks [Fault Codes] to Philips brand TVs are given; along with details of the faulty circuit location.