I have a LG 42PC3D. For quite a few months it had multiple "red dotting" around the left side and bottom left that only was bothersome when the 'scene' was dark...it did not affect it when the scene was lighter. Yesterday, it just went "pop" and went black. Sound works, channels change but no picture. Can it be fixed? Can I pull out what needs to be fixed and replace? Is it worth fixing?

Suspects are main board and power supply board--either can do this. Keep in mind only boards are sold for this type of set---If LG Google the model number with "parts" as there is a place that sells all the boards by model number (not LG itself). You will see a list of the boards the set uses and prices.

Ensure there are no loose contacts in RC Jack, cable, sockets. Try changing the input device to some other and see.

for this symptom (over diffusion) the voltage for Vsetup has to be decreased, or for opposite (under diffusion) has to be increased. These would be on your sustain board Y. Make very SMALL adjustment, as this can be very touchy potentiometer. There is a sticker on back of panel that will have all the voltages for Vs, Va, Ve, Vscan; these are very important, have to be spot on.

have almost the same problem left side is black with sometime blue line red lines or a whole bunch of different lines some one help please have sound and right side of tv works fine

defective plasma pdp display

I had the same problem a few months after buying the TV, called LG and they sent a tech to replace two boards in the tv. No further problems since.

This is a "mal-discharge" fault & will need either an adjustment on the Y-Sustain board or a software update to the control board. Contact your LG dealer to arrange someone to sort this out for you.

A plasma screen uses thousands of tiny fluorescent bulbs in different colours (red blue and green) to produce a picture. Just like standard house hold fluro lamps, these tiny bulbs use starters to turn them on and off. As there are so many bulbs in the panel and therefore starters, the panel has a number of "starter controllers". These controllers can control anywhere from a quarter up to half of the screen. If a controller dies, it takes out it's segment of the screen. Unfortunately, it sounds as if this is what has happened in the case of your LG - this is also common in NEC and Fujitsu panels. Althought these controllers can be fixed, it usually takes more time and money than it's worth- unless you have it under warranty in which case the manufacturer will just replace it. Sorry top be the bearer of bad news. hope it helps

This problem (known as sparkles) can be cured by adjusting the ramp control on the Y-Sustain board. If this does not cure the dots then there is a software remedy for the control board which an LG repair centre could fix. Failing that a replacement board is required. The orbitor & whitewash are like screen savers to help to prevent a screen burn from a permanently displayed image.

Check this out

http://forum.eserviceinfo.com/viewtopic.php?t=30810

have a nice day