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I have LG 50LN5600-UI. Can you help me troubleshoot a screen problem. I have video & back light. Screen has a thin black lines on it. The lines shift every 3-5 seconds which distort the picture. Troy

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Sounds like T'Con board problem. If you wish to get some details; check the site linked here. Pull up older posts. Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of 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

Posted on Dec 11, 2016


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

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Posted on Jan 02, 2017

  • 5 Answers

SOURCE: i get a thin line of distortion on my sony xbr 42in

Your format is wrong. Make sure that your tv is in full mode and your direct tv is in 1080i stretch mode. This should correct the problem. Also, WB is having problems. This is common on their channel. If it is happening on any other channel, try the above. Hope this helps. JOHN

Posted on Feb 27, 2009

  • 1 Answer

SOURCE: red static in black background ~ thin line running down center


Did you find a solution to your "red dot" problem? I'm having the same issue :(

Thanks John

Posted on Jun 18, 2009

  • 231 Answers

SOURCE: Hitachi Plasma very thin bleeding horizontal lines

very possible the YSUS board is going bad .If YSUS is going bad .I would also replace XSUS board since they are same age..Also whenYSUS is replaced make sure you make pot ajdustments as old YSUS and also with XSUS board

Posted on Aug 26, 2009

  • 1 Answer

SOURCE: SAMSUNG LE40M86BD very thin black line

I have the same problem with the same model tv, just over 2 years old, and out of warranty, you should expect more than 2 years life from a tv costing around £700, i have just had an independent inspection done confirming a manufacturing fault rather than human intervention, and clearly not fit for the purpose for which it was sold, and sent it to a large retail park outlets customer service dept, i have been assured they will look into it, my 15 year old sony 32 inch wide screen crt still performs as well as it did when i bought it, but it is the size of a small family car so not easy to lug around, i guess they just dont make em like they used to,

Posted on May 13, 2010

  • 30 Answers

SOURCE: A horizontal thin black line has appeared across screen.

hi all .ive had the same problem,a thick black line down screen.sometimes it flickers from top to bottom and other permantly in view.but i have solved it.forget your ic boards and taking apart tv.have you got either a ps3 or wii connected to tv.if so unplug power lead from socket and relocate in seperate socket.make sure the lead is completely free of any other leads and you might just find this works.i think the power lead creates some sort of frequency that the tv picks up .good luck hope it works

Posted on Oct 30, 2010

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I have an LG LED TV model 50LN5600-ui. It has no picture, does has sound and the backlight turn on for just a second. could it be the T-com or LED strips?

Hi Omar,
Most likely it is the backlight in your TV causing this problem. Please check the backlight strips if you can. T Con board has nothing to do with this fault. I hope it helps.
Good luck.

Mar 29, 2018 | LG Televison & Video

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I have an LG 50LN 5100 with horizontal strip...

Try removing the connectors from the TCON to the panel and re-seat them and see if that helps.. If it doesn't I would have to think something in the panel was damaged when the LED's were changed. Ive changed dozens of LED strips and every once and awhile one will get damaged no matter how careful a person is.

Oct 18, 2017 | LG Televison & Video

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I need advice on LED TV repair I have a LG 50ln5600 TV that has quit working and I would like to know if it is worth fixing.

LG has been having problems with the panels LEDs going bad. To get to them the panel must be disassembled by removing the screen and defusers, usually 3 of them. Make sure you reassemble exactly as you disassembled. After removing the screen and defusers, you can now power the set on and see which LEDs are not lighting. Gotta have a quick eye. You can usually locate a replacment LED strip on E-bay. This is not an easy repair. I charge $200.00 to do them. Hope this helps. :)

Apr 28, 2017 | LG Televison & Video

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I have a problem with an lg tv. It a 50 led tv with a thin black horizontal line across the screen and below the line it alternated every 5 seconds between clear and distorted on 2/3 of the screen.

There are a few videos on YouTube about trying to repair flat-screen TVs. Some of the things to try are reflowing the solder-joints with a heat-gun, capacitor replacement, and re-seating the cable connections.

Feb 11, 2017 | LG Cell Phones

1 Answer

Lg 50ln5600-UI smart tv has sound but no picture.. How to fix?

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.
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.

Aug 01, 2016 | LG Televison & Video

3 Answers

I have a Lg 50ln5600-UI flat-screen tv that turns on but I can't the see any thing on the tv unless I point a flashlight at the screen. What could this be?

Hello Dararius,
When you shine the flashlight at or near the screen and see the images, it means that the LEDS located behind the screen are not working. Since LED's don't usually blow out, it means that the LED driver circuitry located on a pc board inside the set is blown out and either needs to be repaired or just buy a new pc board from ebay such as the following:

Aug 01, 2016 | LG Televison & Video

1 Answer

I have an LG 50LN5600-UI. The left half of my screen is now darker than the right any idea what the problem maybe?

It could be that the lamp is burned out on that side. Close up-, Shine a flashlight into it and if you see an image form it's simply the lamp. If not, then it could be a processor issue or something more complicated.

Jul 11, 2016 | LG Televison & Video

1 Answer

Lg 50ln5600 backlight issue

Check whether the back-light start voltage [control voltage] comes to the backlight inverter section of the power board; from the main board. It sounds that that voltage does not come from the main board, after the firmware has been loaded up. If so the main board will have the fault. Contact any service technician.

Aug 03, 2015 | LG Televison & Video

1 Answer

Why do i have no picture or sound on my lg tv model 50LN5600-UI?

These 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.
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

Sep 13, 2014 | Televison & Video

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