Question about LG Televison & Video

1 Answer

LED screen is black, but my tv still gets sound. LG told me this would be $331 for them to fix since the TV isn't under warranty. Could it be as simple a fix as the T-Con board?

LG 55UF6450. Just over one year old (out of warranty) I can tell the backlights are lit up, just no video signal at all showing on the screen (menus or anything).

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
  • 75,025 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 Dec 07, 2016


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

  • 4090 Answers

SOURCE: As i was watching tv last nite, my 42" LG Plasma

contact either LG or your seller This is a manufacturer warranty callback It is a well known problem and will be fixed free of charge

Posted on Aug 12, 2009

  • 566 Answers

SOURCE: Lg 32LC2DU-UE lcd tv sound and backlight but no video

Hi barry
To answer your question;
Strange coincidence but i repaired the same tv model that you have yesterday and for the exact same problem so here`s the fix;
In your power supply on the 5volts line there is two 3300mfds/10volts capacitors gone bad and that caused the voltage to drop to 4 volts(not enough to shutdown the set but enough to kill the video)
You`ll recognize these capacitors by a rounded top and some fluid that leaked out, you can replace them with 3300mfds/16volts since the 10 volts variety is harder to find.
And while your at it you should inspect and replace the other capacitors in that area that have the same look
Good luck and keep me posted

Posted on Jan 21, 2010

  • 2002 Answers

SOURCE: sound but only white screen no menu

try to: find the t-con circuit board in any country on ebay; replace the board yourself (it's easy) it's about $60.00 usd here

Posted on Jul 22, 2010

  • 666 Answers

SOURCE: vizio p50hdtv10a. Tv has sound

sounds like you needed to replace your video fuse before anything normally if you have video but no sound its an audio fuse and vica versa if for some reason both were out I would say your in need of a new power supply I would suggest replacing the fuse and if it still does not work contacting a service tech to run a diagnostic to see what exact part or maintenance you need


Posted on Nov 07, 2010

  • 608 Answers

SOURCE: Samsung 46" LCD LN46B650 started showing vertical

had a very similar situation with my Phillips 42 in. LCD TV.

Here was my Problem. The Power Supply Board. I opened it up( Warranty was Expired) and found several faulty capacitors on the PSB. Its pretty common. Major Electronic companies were sold faulty capacitors that fail in 2-5 years instead of 10-20 due to a lack of preservatives. It wouldn't surprise me if you have the same problem. TV will work fine for a few years and then just fail completely or slowly deteriorate.

Here are the solutions
1. Have it Repaired
2. Check for faulty caps and if you find some(budged or leaking) you know you have located a problem
Remove the board and replace the whole thing.
3. If you have some soldering skills you can replace the faulty caps.
Caps are very inexpensive, under a dollar in most cases. I replaced 4 for about $5.00

Hope this Helps.
Good Luck

Posted on Dec 10, 2010

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

My Samsung TV has only a faint picture and full sound.

My LED TV has sound, but no picture. - Tom's Guide
Dec 28, 2015 - The RCA TVs generally only have a 1 year limited warranty so that ... LG LEDLG LED TV has no picture (black screen) but still has sound TV has ... I Have SAMSUNG UA46 F6400 LED 3D TV I want TO CONNECT MY ... SolvedSamsung ledTV no picture solution; Sony vizio led tv has faint picture solution ...

TV Has Sound But No Picture Troubleshooting Guide ...

? 2:30
Aug 31, 2012 - Uploaded by
Here are some steps to ease you through TV picture loss-from prevention ... But now when I turn on the tv there only sound nopicture. ... had sound etc. with very very faint picture if you look very closely (which I was). .... How To Fix Samsung LCD TV -Samsung TV Repair (Blank Screen) - Duration: 9:21.

Samsung LCD TV No Picture but has Sound - Electronics ' DSLReports ... > ... > Electronics


Jan 26, 2016 | Samsung Televison & Video

1 Answer

My tv image goes off while watching tv,I do have audio but no image.

LG 42LS5700 - > Home > Support > Product Support

LG ElectronicsTV/Audio/Video; TVs; 42LS5700 ... TV Support Landing Page - HDTV/Netcast/webOS 1.0/webOS 2.0 ... Adjusting Picture Settings - webOS 2.0 Video ... quality and convenience of complimentary shipping when buying directly from ... Curved TVs · 22 Inch to 29 Inch Class TVs · 32 Inch to 39 Inch Class TVs · 40 Inch ... Customer Reviews: LG 42LS5700 42-Inch ..., Inc.LG 42LS5700 42-Inch 1080p 120Hz LED-LCD HDTV with Smart TV (2012 Model). byLG. Size: 42-Inch ..... images are nice and crisp when viewing HD content.

Widescreen TV Black Screen - Repair LCD LED PLASMA ...

? 3:41
Jul 13, 2011 - Uploaded by FixItUrselfDummy
Fix your tv with black screen blinking light, popping sound noise. ... Watch QueueQueue ... TV Black Screen - Repair LCD LED PLASMA - Problems SONY LG .... I have a 60 inch samsung DPL tv how can I stop the humming or ... What do I do if my tvturns on but its just a black screen so sound no picture?.

Jan 11, 2016 | LG 42LS5700 42 Inch 1080p 120Hz Smart TV...

1 Answer

LG LED tv black screen

led light under screen is not glowing,,check led lights or its related circuit

Dec 28, 2015 | LG 50LN5750 50-inch Widescreen Smart LED...

1 Answer

The tv has sound but no picture. For

LG LED TV has no picture (black screen) but still sound ...
My 32' LG LED TV has suddenly lost picture! The sound is all right but the Screen is pitch black. After switching it on the picture flashes for a second and then the screen goes completely black.

LCD Easy Fix (sound but no picture) - YouTube

? 4:52
Jan 13, 2012 - Uploaded by Clay Whitehead
TV Has Sound But No Picture Troubleshooting Guide - Duration: 2:30. by 472,733 views. 2:30. LG LCD TV REPAIR -NO PICTURE ...

Dec 21, 2015 | LG 47LN5400 47" LED TV 1920x1080, 120 Hz....

1 Answer

My LG tv will go on then after a few seconds the screen goes from black back to picture of and on a few times then shuts off. Help!

LG LED TV has no picture (black screen) but still sound ...
7 days ago - My 32' LG LED TV has suddenly lost picture! The sound is all right but theScreen is pitch black. After switching it on the picture flashes for a second and thenthe ... LG LED TV has no picture (black screen) but still sound - can it be fixed? Tags: ... a touch on the screen reveals nothing so it's not the back light.

Monitor going black after 2 seconds [Solved] - > Forum > Hardware
Oct 9, 2012 - Brightness goes down, display draws less juice, and you can at least use .... it's the LCD's Inverter ... you have to replace it for it to go back to ... If the screen is turning off every two seconds or so and then it comes ... i turn my tv on it comes right on, but then after a few minutes turns off, .... Digital Trends for LG. No display in monitor
Jan 11, 2013
Ps3 and hdmi cable
Oct 8, 2012
More results from

TV with Black Blank Screen Repair How to Troubleshoot ...

? 3:16

Dec 20, 2015 | LG Televison & Video

1 Answer

LED screen comes on and goes black


? 5:29
Jan 25, 2013 - Uploaded by Tampatec
Common LG LCD TV REPAIR - NO PICTURE OR BLACK SCREEN FIX ... I have a LG 42PM4700-UB plasma tv that justwent black. The red ... I had to keep turning on and off the TVseveral times for the screen to come back.

LCD & LED TV Repair - No Image & Blank Black Screen ...

? 5:56
Sep 15, 2014 - Uploaded by
LED & LCD TV How to Diagnose Symptom of No Image on theScreen CLICK ... Tv was working fine when left to go to store and came back to blank picture and ... my samsung tv it turns on but its completely black and no sound at all ... LG LCD TV REPAIR - NO PICTURE SCREEN FIX REVIEW - Duration: ...

LG LED TV has no picture (black screen) but still sound ...

Dec 09, 2015 | LG 47LS4500

1 Answer

Lg led tv has sound but no picture

suspect either a back light power board issue or main power board to back light board issue...also, is it under warranty ?

Dec 28, 2013 | LG Electronics 47LS4600 47" LED HDTV

1 Answer

Plasma screen color problems

I just bought a 42pc5d plasma tv it's an LG I bought it in Sept. 07 it started doing the exact same thing your talking about here the red glow type thing. Luckily for me and I hope in your case that the tv is under warranty, although if you know someone or even a repair place I don't think it would cost much to fix (just a guess but the guy told me that it was an easy fix so don't let them try to screw you). It really is a simple fix according to the tech. You need to adjust the voltage. He took the tv and watched it until he saw the red and adjusted the voltage and I had my tv back the next day. This was about a week ago and I haven't seen it since. I hope this helps and I hope you have a warranty. By the way LG comes with a 2 year manufacturer's warranty standard so if you didn't get an extended warranty from where you bought it if it's less than 2 years old call LG and they will arrange to have it fixed that's what I did. Here's the number 1-888-542-2623. Good luck.

Dec 27, 2007 | LG 42PC5D Television

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

Related Topics:

61 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

75025 Answers

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

Answer questions

Manuals & User Guides