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Vizio e500i-b1 w back light issues. Want to test the LED driver for voltage. my boards are not conveniently labeled. where exactly is the led driver for this? particular set?

Posted by selzlerj on

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Lawrence Oravetz

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  • Vizio Master
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Vizio TV No Image Black Blank Screen No Backlights Basic LED... Led drivers are on the power supply board. Here's a video

Posted on Sep 09, 2016

  • selzlerj Sep 09, 2016

    The guy in the video says" as you can see here it's on the power supply board". That doesn't help me because I don't see it on the board I'm not sure where exactly it is. There's no markings or notations on my board to tell me. I'd like to test it but really have no idea how. Additionally, when I chatted with the people at ShopJimmy.com they told me the led driver was on the main board for my particular tv. This is why I need someone to point out EXACTLY where the LED driver is.

  • Lawrence Oravetz Sep 09, 2016

    If Shop Jimmy told you your model TV has the led driver integrated into the main board, then that's where it is. You'll have to locate the wire harness going to the leds and trace it back to the board connector on the ain board in order to test for voltages.

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2 Related Answers

gopakumarg43

The Knight

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SOURCE: I have a Vizio E500i-b1 50" led tv and if I turn it off I can not get it to turn back on for hours/days....any help is appreciated!

Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. 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/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Feb 10, 2016

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gopakumarg43

The Knight

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SOURCE: Vizio LED TV model # e500i-b1. No sound picture. On light stays on. Not sure if it's the main board or the t-con board or another thing. Did the flashlight test and didn't see anything in the screen.

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.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

Posted on Aug 22, 2016

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Vizio E500i-b1 went dark, any ideas on what to check next?

You can change boards in your TV all day and it's most likely no going to fix this set. Have you ever had a set of miniature Christmas lights that seemed to work great then all a sudden none would light, either because a bulb burned out or fell out? There are 2 types of electrical circuit wirings, one is series the other parallel. In series like your LED backlights are wired in your TV there are about 8 button lamps per circuit that have a 24 volt DC supply serving each set as this TV has what's called local dimming, one of the lamps has opened up making that set not light up, the power supply has over voltage and over current protection for each supply if one lamp opens up they all go out and this is exactly what's happened in your TV, the power supply safety circuit is non discretional, if it detects an error it shuts down the entire backlight circuit giving you no backlights. As far as a break down on what fails 5% of the times it's the main board 5% its the power board and the other 90% of no backlight failures on this model TV comes from the backlights being bad. You can change just the one bad strip if you wish but it's advised to change them all. Good luck!
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I have a vizio model E500I-B1, SERIAL LTY6PLYQ5254714 that I'm having some issues with.. it seems to have intermittent back like issues. can anyone advise me where to start?

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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Vizio E500i-B1 TV sometimes black screen with no back lights but has sound. Watched Youtube - may be Power Supply board. LED inverter must be on it. What do you think? Any other way to test it?

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..
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Replace wifi module on Vizio E500i-B1

If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
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My vizio will not turn on. The light on the bottom flashes on and off, but nothing on the screen. I replaced the main board. It worked for several days then went right back this issue.

Have just looked on you tube , I typed in fix for VIZIO E500i -B1 power off and a 2.24 minute video appeared . if that does not solve your problem type the product info and fault again and check the videos that pop up . hope this info is of use to you....
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My Vizio e500i-b1 LEDtv went out last night. How can i tell if it's the main board or the tcon board that isn't functioning?

I would verify the voltages on the power supply board first because an improper voltage to a circuit board may make that board look bad.
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