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I have a Vizio P55-e1 tv with dim backlight. Led backlight control has no effect on back light brightness. Which board is likely the issue. Picture and sound are fine. Just very dim

Posted by John Van Antwerp on

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1 Answer

Paul Katynski

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  • Master
  • 548 Answers

Sound like you have a bad ground at your board somewhere but if you are not familiar with electronics and high voltage please call a certified technician

Posted on Apr 22, 2021

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5 Related Answers

MicrowaveSvc

William Miller

  • 9179 Answers

SOURCE: Dim LED Lights

We can replace the VFD tube for you. The total cost for this repair is $71.06. For more information, our site is linked at our listing here on FixYa: http://tinyurl.com/yzjozk

Posted on Sep 23, 2007

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Anonymous

  • 1 Answer

SOURCE: Picture (video) jumps from bright to dim

I figured it out myself. R243 was intermittently open. Replaced it, and now we can watch the Super Bowl.

Posted on Jan 29, 2009

budmrtn

Bud Martin

  • 11361 Answers

SOURCE: Toshiba 22LV505 TV-DVD:

Check the DC filter caps in the power supply first. Check the 24vdc (or 18vdc for this 22" model) to see if it goes away when the screen goes black.
There are main AC fuse, backlight inverter fuses, T-CON fuses.
If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Posted on Jul 08, 2010

Anonymous

  • 12 Answers

SOURCE: I have a vizio vz37l tv. When i turn it on the

its the main board...

Posted on Mar 07, 2011

TODDAS

Todd Hill

  • 433 Answers

SOURCE: Vizio SV470M Issue Sound No Picture

Do you have backlight? If you do, you have a bad main logic board. Very common with vizio and are hard to find. They are usually out of stock everywhere.

Posted on Oct 31, 2011

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Related Questions:

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2answers

Vizio E60-C3. The picture is dimmed. One side is darker than other. What do I need to replace? T-con board, main board, led lights.

Try a Hard Reset first.

Note: To perform a hard reset on a Vizio Smart TV, you will need to use the remote.
  1. Unplug your router.
  2. Press the menu button on your Vizio remote.
  3. Navigate to System on the menu and select OK.
  4. Select Reset & Admin and select OK.
  5. Select Reset TV to Factory Defaults and select OK.
More items...

Mar 19, 2022

How to Hard Factory Reset a Vizio Smart TV - Alphr

Hard Reset VIZIO TV E60-C3, how to - HardReset.info

https://www.hardreset.info > devices > vizio-e60-c3
In the first place, you need to turn on your VIZIO E60-C3 TV. · Once the TV turns on, press the Menu button on the remote. · Now the Menu should appear on the ...

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0helpful
1answer

Samsung Smart TV has a very dim picture. Is a LED driver board the proper fix?

Depends on the model. Have you checked the backlight, (LED in this set perhaps).
0helpful
1answer

I have a Blank screen on Vizio TV?

Hi Ed...You need to find if the backlights are staying lit or if they're shutting down completely. I have a feeling you have bad backlights but it could be other things as well. Take the back off and you should be able to see if they shut down, on this model it's normal for them to dim if no image on the screen but they shouldn't go out. I've had issues also with the backlight control circuitry on the power supply, this is an edge lit set and the lamps on this type of set are more troublesome than sets with strip
2helpful
1answer

Vizio D65u-d2 Backlight not working after replacing 2 LED strips?

You should be able to replace just the bad LED strips however with as much work as it is to get the set apart and back together I always replace all them as other strips generally fail in time. Did they all light up after you replaced the bad ones before you put it back together? This model set has local dimming so servicing it is a bit more complex, you could have a bad backlight driver but that board seldom gives issues, also you could have main or power board issues as power for the backlight driver comes from the power board or you could have main issues as it's the signal from there that turns on each strip.
1helpful
1answer

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!
0helpful
1answer

I have a vizio e65-e1. It is unbearably dim. Sound works. Backlight is on. Picture is there. Just so dark you have to be 1 inch away to see it. Went through settings and set backlight to 100 but didnt...

There are strips of led's that control the brightness of your picture. Check the driver board and also check to see if all led's are lit. Go to shopjimmy.com for parts and how to.
0helpful
2answers
0helpful
1answer

VX37L Screen Suddenly Went Blank, Now No Image, Sound Only on Cable Input, VIZIO Logo Lights Up

Hello,
turn on the set, grab a bright flash light and dim the lights in the room. Shine the flash light on the screen, if you see a faint picture on the screen, you are dealing with a backlight problem. There are several things that can cause this. One, a bad backlight inverter, two, faulty 24vdc power supply, three, bad main board, or a bad faulty backlamp.
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