Question about LG 55LE5400 55-Inch 1080p 120 Hz LED HDTV with Internet Applications

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Gray vertical bars on screen but no picture

When the Television is on, all that shows are gray vertical bars at varying widths. Everything else works - sound, channels change properly, etc. Just the screen is all gray with these vertical bars or stripes

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  • 59 Answers

It sounds like you might have shorted out the display panel driver board / boards.
These boards are located at the bottom of the screen and are prone to liquid damage.
Just before this happened, did you happen to spill something on the screen or clean the screen using a spray bottle cleaner?
The only fix I know of is to replace the whole panel but it is usually just as cheap to buy a new TV.

Posted on Nov 28, 2013

Testimonial: "Thank you, Ken. It is quite possible it was sprayed with a cleaner to clean the screen."

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: gray bars on side of picture

Yes. There are options. Strech, wide, full, zoom, and gray bar are common options. Some times when aa HD channel is not broadcasting in HD you will also get a narrow picture.

Posted on Apr 30, 2010

ladywinn
  • 5138 Answers

SOURCE: While watching a tv show,

On Power supply board ,Look for Bad Capacitors they will be vented,swollen or Puffed up on Top 1000uf 16v 220uf 10v 3300uf 10v 330uf 10v. Also the Main Board can cause this its the board that has where you connect cable and AV jacks on it,I have just resolder these boards and everything went back to working, But thats not always the problem.

Try Google then go to Encompass Parts Distrbution and type in your model number for listing of Parts and Prices

Posted on Aug 24, 2010

budmrtn
  • 11361 Answers

SOURCE: 32LH20RMA problem is half of

Please read or download the info about fail T-CON/LCD panel and see the example of failed T-CON and LCD panel.
You may want to try to reseat the ribbon cables between the LCD panel and the T-CON board first.

http://www.scribd.com/doc/25276757/E40951307-TCON-Troubleshooting-10-22-09-OPT


PDF download: http://www.mediafire.com/?zzjygannjty


LCD panel: http://s807.photobucket.com/albums/yy352/budm/LCD%20panel/

See FIGURE 4 of the download.

LCD panel: http://s807.photobucket.com/albums/yy352/budm/LCD%20panel/
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: http://interliquidparts.com/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series

Posted on Jul 19, 2011

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1 Answer

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Hello,

The T CON board of the television is bad, you need to replace this
The T-CON (Timing Control or LCD controller) board (on the LCD panel assembly). It transfer the universal image signal of TTL and LVDS signal to specific TFT (Thin Film Transistor) LCD.
This is the interface board that talks to the Logic board and the LCD panel to produce pictures on the screen. White/gray glowing screen when it fails or not getting the voltage from the logic board (the 5 or 12vdc is supplied by switched transistor on the logic board). Notes: T-CON board is mounted under the metal cover shield.
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Page 1
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