20 Most Recent LG 42LM6200 42 in. 3D LCD HD Cinema Smart TV Questions & Answers

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If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ 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" to 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

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/ Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent. Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. Firmware upgrade procedure to many TVs and other devices are given with illustrations.

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Do you have sound? If so take a close look at the screen and if you can see images on the screen then the back light might have a problem. This could be because of a bad inverter.

Beware before downloading any software and installing it. Contact the authorized service centre for LG; and seek advice from them before you do this. http://electronicshelponline.blogspot.com/

Contact the authorized service center.

No it looks like you need a new screen. At only 7 months old have you any cover for repairs.