You can fix you have to follow this instruction
1-Reset the TV by unplugging its power cord for 30 seconds and plugging it back in. This is an essential troubleshooting tool as a simple reset often will resolve the great majority of technical issues experienced by any kind of TV. Power the TV on after plugging it back in and check the picture for any improvement.
2-Unscrew the coaxial cable that attaches your wall cable outlet to either the coaxial cable input on the plasma TV or to any digital cable converters you may use at home. Check the copper needle in the middle of the cable for any bending or damage and screw the cable back on the coaxial input. Again, check the picture for any improvements.
3-Secure the audio/video connection cables that attach the source device you are trying to watch to the plasma TV. This is a particularly important step if you use component cables. Component cables separate a video signal into different colors, so a damaged or loose component cable can lead to noticeable discoloration on the screen. Once the cables are secure, both in the source device and the plasma TV, check the picture again to see if this may have resolved the issue.
4-Scan your channel lineup and check the other TVs in your home to determine the scope of the problem. If you see the discoloration only on one or a few channels, and the same channels are discolored on the other TVs in your home, you may be part of a cable service outage and you will need to report the issue to your cable provider. If all the channels on the one TV have the same discoloration, and the other TVs in the home look normal, the plasma TV likely will need to be serviced for a problem with its picture components.
hope that it helped
SOURCE: LG 1710b tft monitor - no picture. screen shows 4 hozizontal line
Problem with Interface board or panel.
Also maybe due to defective powersupply filters.
Samir
SOURCE: LG Flatron 795FT Plus - horizontal lines on screen
YOU NEED TO CHECK TO SEE IF THE CAPASITORS ON THE POWER SUPPLY AND MAKE SURE THERE NNOT BULGED OUT OF LEAKING IF THEY ARE THE NEED TO BE REPLACED
YOU SHOULD BE ABLE TO FIND EVERYTHING YOU NEED AT RADIO SHACK FOR LESS THEN 20 BUCKS
SOURCE: LG - L192 WS LCD Monitor displays blue color
it isnot softwere problem. we can not solve in home. lcd graphi can be reset.which we can get in net it can be solved by expert. once atime i get it in web side, t
SOURCE: Color patching
And move it away from the magnet or speaker :) Speakers are cookie monsters for screens.
SOURCE: blue verticle line is displayin
The blue line is most likely the result of your monitor's screen going bad. One thing you can try is disconnecting and re-connecting your video cables to make sure it's tight and has a good connection. This probably won't help, but it's worth a try. You may also want to connect the monitor to another computer to see if the blue line stays, or goes. If the blue line stays with another computer connected, the problem is inside the monitor. If the line goes away, you should replace/repair your computer's video card and/or cable. Otherwise, you need to replace/repair your LG monitor.
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