Half screen on lg 50pq20 - LG 42PC3D 42 in. Plasma Television

The most logical problematic thing would be Sweep circuit board on the TV. However it could be a loose ribbon cable or connection. The worst scenario would be A cracked screen. Good luck

Kids eh... who needs em..nothing but trouble. Anyway it's stuffed. It'll cost more to try and fix than to git a new one so sell the kid git a new telly and no more problems.

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.
http://electronicshelponline.blogspot.com/
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.

I think problem in your power supply board its occur when due to bad capaciter s so pls check all the capacitors in the ps brd

Hello
What is the problem with your LG flat panel TV? give me details about the fault you experience now. give me details as much as you can. OK.

Sounds like the lower Y-scan board is bad.

your screen has broken and LCD also has broken that's why your half screen is working and half is black. you have to change your screen and then use your phone again like before

Install the forteManager software that comes with your LG LCD monitor. Go to the Options tab and choose Restore which will set it back to factory settings. For some reason some monitors come this way out of the box and this was the only way I was able to solve the problem with mine.

Hello, same thing happened to my 10 day old 60ps60 and we called LG and they came out and put "pin tighteners" on the Y board. All they are are these little white plastic clips that the technician put on the connectors. It is nothing you can fix. Call LG