Question about LG Televison & Video

1 Answer

LG49Uf7600 has half screen green and goes on and off in loop. All capacitors are good. Guessing it's tcon but will tcon also fix on and off issue ? I am getting sound and lg logo on half screen.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • LG Master
  • 75,169 Answers

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.

Posted on Apr 27, 2017


6 Suggested Answers

  • 2 Answers

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

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

  • 147 Answers

SOURCE: black screen

first try the address board or buffer board.if this
does not repair it,the panel is defective.

Posted on Jul 17, 2009

  • 2600 Answers

SOURCE: Acer Aspire One loops on start up screen.

Try tapping F8 when the acer window shows, when it shows the muliboot option, scroll down to "Last Known Good Configuration" and hit enter. If it does not boot normally, you will have to get an external dvd drive and boot off the drive with a windows installation disc to perform a repair.

Posted on Jan 07, 2010

Bex babiee
  • 4 Answers

SOURCE: LG Renoir wont turn on

Hmmm, I have the same problem as well. I have just recently exchanged my LG renoir for another one with my buisness contract insurance due to the previous handset's camera not working.
I have had this new one for about 4 days and everything was fine until last night. I sent a text and looked at my phone and it just went black. The backlight still on, the green button, the menu and the red one all light up. Even when I take the battery in and out, it just goes to the lights, if im lucky, i would see the logo LG then it goes back to just all the backlights on. I am wondering if I can reset the phone but I get my upgrade in April. To be honest, I cannot wait.

Posted on Jan 14, 2010

  • 21 Answers

SOURCE: i have a htc desire

there must be an application creating that prob. most probably a third party software u have installed. u have to hard reset ur cell phone. consult user guide of ur cell for instructions

Posted on Aug 19, 2010

SOURCE: I have a toshiba regza 32hl67us that was bad.I replaced the tcon board and it fixed it. I replaced the Tcon board and it fixed my issue. A couple of days later I had to reopen the set to reconnect th

check the cable you didn't put them back properly

Posted on Mar 12, 2012

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer


Can be T con board or the LCD panel itself . Only be able to confirm by replacing the tcon board.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. Seach for TCON Board article

Mar 21, 2016 | Televison & Video

1 Answer

Replacing Tcon board E2268E8A0JQJ with LJ9402870E from shopjimmy didn't fix vertical line problem. on start up. Samsung LN46A550P3FXZA tv. Capacitors replaced 2 yrs ago, still look good.

It could be flat panel problem which goes when screen gets warm. slight pressure on top or bottom middle of screen may prove it when faylt appears.

Oct 19, 2015 | Samsung Televison & Video

1 Answer

Screen is split in half. One half darker than the other colors are all messed up. Lots of green outlines on subjects on screen

Hi Robert,
This appears to be case of dirty ribbon and connector between the TCON board and the LCD panel.The ribbon or flat cable and its connector on the defective side between the TCON and the panel has to be cleaned thoroughly. If you can not do it yourself, any good tv Tech. should be able to do it for you.
Good luck.

Aug 03, 2015 | Vizio E470VL 47 in. HD-Ready LCD TV

1 Answer

Samsung 46" LED - Screen goes to black every 15 sec and then comes back shortly. Do I need to replace tcon or main or is there something else possibly wrong?

Hi Todd,
Screen goes black means back lights go off. The power supply may not be responsible for this problem. Please check back light on command from main board. Good luck.

Jan 11, 2015 | Samsung " 46"" Class - LED - 1080p - 120Hz...

1 Answer

Half of the tv screen is darker than the other

Tcon board either has an issue or the LVDS cable may have a connection issue. try replugging the cables into the tcon if that doesnt help the Tcon will most likely need to be replaced.

Dec 08, 2012 | Dynex DX-LCD32-09 LCD TV

1 Answer

L40fhd41 overheating?

likely the panel (screen or display unit)

Apr 19, 2012 | RCA L40FHD41 40. in HDTV

1 Answer

Half of my screen goes out from time to time. how do i fix that.

This is likely a problem with your TCON circuit board inside the back of the tv.

The TCon board usually has 2 very thin ribbon like cables running from connectors on the board to the actual LCD screen panel. Each ribbon controls one half of the screen. If you are lucky, it's possible one of the ribbons came loose or is not making proper electrical contact with the connector on the TCON board.

If your tv is out of warranty and you are comfortable working safely with electronics then you may be able to repair this yourself with a few hours of screwdriver work. The ribbons may just need to be reseated in the little flip up connectors, or you may have to clean the copper at the tips of the ribbons gently with a pencil eraser to remove any oxidation.

If you are unlucky enough to have a bad TCON board or are not comfortable disassembling your tv yourself then you can bring it in to the shop and they can probably repair it for less than $150.

Good luck and please post back if this helps and with how you make out.

Jan 25, 2011 | Olevia Televison & Video

1 Answer

The monitor screen went black and I noticed the power light goes from green to orange as if it is going to sleep? how do I repair this.

Hi my name is Roety,
I can help you with your issue ,
All you can check is for swollen capacitors visually
after that voltage tests would localize the bad part
Power supply
Main board
panel with tcon and invertors 
If I have helped you with your issue
If you have more questions you can still respond
I will reply asap

Jan 29, 2010 | Westinghouse L2046NV Monitor

1 Answer

Toshiba TV colours wrong pink sky, blue clouds and green people??

Inside your TV there is like a loop of insulated wirings the loop around the screen. This is to demagnetized the tube. There is a varistor which looks like a thick coin with two leads on it, or sometimes it looks like a flat ceramic capacitor that control this loop of wire. When you first turn on your TV current goes through the loop of wires to demagnetize the TV then the varistor shuts off. Sometimes this varistor fails, causing smeard colors. You can also demagnetize the screen without opening the TV. Using a hand held demagnetizer. It can be purchased at some electronic parts store.

Jun 28, 2009 | Televison & Video

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

35 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Televison & Video Experts

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

The Knight
The Knight

Level 3 Expert

75169 Answers

Are you a LG Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides