We have had our LG 50inch plasma tv since march 2009. so 4 months now. and about 2 months after purchasing from sears we noticed all of a sudden while we were watching tv the bottom half of our screen went completly black. but the top portion still displayed and the sound still works. we turned the tv off and back on and the picture is still not reappering. so after 24 hrs of our tv being off, it miraculously came back on. well this has happend 4 or 5 times since we bought it. I need to know how to fix this problem permently if there is even a way to do so. Thank you very much for your help with this bothersom issue.
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
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