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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
  • 9,324 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

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 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
  • 17129 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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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

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

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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

1 Answer

LG 32LN5300 LED TV that suddenly went to Black Screen no sound. Should I change out all three strips of LEDs?


This sounds more like a power supply problem than a problem with the backlighting, plus the lack of sound also would indicate something other than problems with the backlighting.

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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

4 Answers

Lg 47ln5400 picture went black. Still have sound and can see menu screen when using flashlight. Backlight blinks at power up then turns off. Which board is the problem?


I had the same problem with my LG 47ln540v led tv.I combed all the tv forums for answers and most suggested replacing psu board or the main board or talked about bad capacitors or resistors or transistors.Not being a technician I decided to replace all the boards including the t-con board and still the same fault remained.I spent about 5 weeks trying to troubleshoot this fault and eventually decided to strip the tv screen assembly apart and I wired up the led strips individually with a battery and found one of the leds was faulty .It would appear that if the part of the circuitry that monitors the led functions detects a fault it immediately shuts down the power supply to them,ie,enters a safe mode.I found a tv repair shop that was willing to sell me a replacement led strip from a used tv and this has solved the problem.As I have said, although I am not a tv technician I know enough about electricity to feel confident poking around inside a tv but for anybody else I cannot recommend this solution as messing around inside a tv is dangerous even when switched off.Some of the capacitors on the power supply board can store a high voltage and charge and could be lethal.I hope this helps.

Mar 04, 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...


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