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Lg tv, on the power input side of the led strips that whole SECTION went out. The power supply controls those/built in Tcon. Would the power supply cause this? The other side of the strips works.

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  • David Brinkman Dec 05, 2016

    All strips on that side went out

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  • LG Master
  • 10,291 Answers

The LED driver or the led strip has failed. Some LED drivers are on the main board, others on the power supply board. You can get parts from here: www.shopjimmy.com

Posted on Dec 06, 2016

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017

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  • 3 Answers

SOURCE: No picture and no power LED

Hello. I have the exact same tv. and the same thing happened to me! What i did was buy a expensive Surge Protector and now it works! I hope this info is useful!

Posted on Apr 20, 2008

  • 102 Answers

SOURCE: No power, red led doesn't light. Power cord is

Manufactureres usually keep their schematics to themselves however you may be able to contact them to purchase a new power supply.

Posted on Feb 01, 2010

eagle338
  • 4889 Answers

SOURCE: 47" two yr old Visio

This is the second time I have seen this problem this week. Seems like a common issue on Vizio LCDs. Anyways the problem you mentioned indicates that the tv-micro IC has failed. THis is located on the main audo/video board and a component level repair is not possible in this case. The main A/V board has to be replaced and it should cost you around 100-125$. Would you like to do it yourself?

Posted on Dec 29, 2010

  • 517 Answers

SOURCE: I have a olevia model 232-s12 tv has sound but no

Good day.

If you already replaced a new inverter board and T-con board and the problem is still there.Try to play the video on the DVD,if the video is OK check the cable connection and try to run auto scan.
If the problem is still there check the input supply of the system board or main board it should have 5vdc and 12vdc,if it is OK replace the system board.

Review this manual page 4-1 abnormal display http://www.scribd.com/doc/36875894/Olevia-232-S12-SM

I hope this solution will be helpful.Thank you for using FixYa.

Posted on Apr 17, 2011

caroldon
  • 17130 Answers

SOURCE: lg lcd can a bad tcon board kill all power

Yes , it can be a short on the board that will ask the SMPS unit to protect the power so as to switch off. So even with a multi-meter check you will be able to trace the short on the board, the drivers or any capacitor that is cutting off the power which must solve the issue.

Posted on Dec 15, 2011

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LG 50LB5900 blinking but has sound, how to tell if it's the power supply or the leds?


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.
https://homenol.blogspot.com/
https://electronicshelponline.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, [Exclude the model number] in the "Search box at the top right of the display window of the Homepage" to get gathered related posts./

May 30, 2018 | LG Televison & Video

Tip

TV led back-light repair


Tv using power supply unit EAY62810301.

No back-light/sound ok.

No dc voltage measured at P801 led plug.
New board did not fix.
Remove display panel.
With face up, panel will hinge up. (after removing all trim parts) Place folded towels beneath, to prevent strain on tcon ribbon.
Fold other screens up and over on top of display to keep them in right order. Including white background reflector.
Check each series led string with 2*9V batteries and series resistor, minding marked polarity.
Circuit consists of 3 strips of 7 leds all in series.
One bad led disables all .
Check each led of bad string. I used 18V and 1K ohm.
Replace strip or jumper (short) bad led. I just jumpered the bad one that was on edge of panel. (first in string).


http://i.fixya.net25611904-d2havjugub54lsdvnfsaynwf-2-0.jpg

25611904-d2havjugub54lsdvnfsaynwf-2-0_0.jpg

on Mar 28, 2015 | LG 32LN530B 32" 720p LED-LCD TV - 16:9 -...

1 Answer

Samsung UN65EH6000FXZA (Version YH02)


There is three possibilities:
1. Defective back lights LED strip.
2. Defective LED driver section integrated in the main power supply.
3. the main board.

How to check it:
1. You need a LED back lights tester to check the strips, or open the panel, use a 3.7 V DC power supply to test each LED diode separately.
2. Use a multi meter to test the out put DC voltage from the connector to the LED strip between the + & - for each section, (like 1+/1-, 2+/2- etc.) it should read 140 - 220 V DC. (need power up the TV).
3. Un-plug the cable between the main board & the power supply, power up the TV, if you get the back lights light up, the main board is bad.

Aug 11, 2017 | Samsung Televison & Video

3 Answers

I have an LG 47LN522-UB LED TV that stopped working after three years and need help diagnosing a problem with it.


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.

Apr 26, 2017 | LG Televison & Video

1 Answer

What's wrong with my LG 55LV9500 LED TV? Power on, black screen.


Hello, either the power supply is failing to power up the LED's or the LED strips in the screen have failed, a common issue with these sets. Power supply part # is EAY62169701. LED strips are only available as a complete screen assembly from LG....thanks

Apr 23, 2017 | LG Televison & Video

1 Answer

Tv was on and the picture went out. no picture but i have audio. tv is only 5 months and lg refuse to fix it


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.
If the TV is under warranty period, LG is responsible to make it right. It is not a defect caused by you.

Oct 27, 2016 | LG Televison & Video

2 Answers

I have a Vizio E701i-A3 Edge lit LED TV. I looks like an 8 inch strip of the LED edge lights along the bottom are not working. Do I need to replace the light or the T-con?


Tcon is the board that sets the tone for the whole image. If you have a small section that appears to have no backlight then the tcon is not your likely point of failure.

Sep 06, 2016 | Vizio Televison & Video

1 Answer

How to fix LG 47LN5200 TV?


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.

Nov 30, 2015 | LG Televison & Video

1 Answer

What does an IR led board on a HDTV do


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

Oct 31, 2015 | LG Televison & Video

2 Answers

LG 50ln5200-ub led TV . Has no picture but great sound . What is the problem ? I did the flashlight test and can see the faint picture which tells me the backlighting is out . This tv model is a Black...


usually bad power supply, Where did you source your part? return/exchange it. Bad LEDs/ possible but not as likely, Tcon working if you can see images with flashlight. You must also have backlight on signal from main board ,check for 3 to 5v on labeled connecter on power supply. UPDATE---47" & 50" LN series. This model has had LED problems if your TV acts as described by Mr. Hughes in is answer to this problem you have bad LEDs

Feb 16, 2015 | LG 50 Inch LED TV 50LN5200 LN5200 Series...

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