Sounds like you've lost part of your LCD imager. Could be a defect in the LCD panel itself or part of the digital driver section.
According to Samsung's official website the section LCD HDTV currently provides 2 devices. One of them is the 40" Samsung LCD 550 series TV, the other the 46" Samsung LCD 550 series TV.
You will find information on which brand of LCD TV brand to buy at the following website....www.techradar.com/.../television/.../best-tv-2012-what-tv-s...
The best LCD screen tvs belong to Samsung and LG. They are known for all of their great products and the tvs are no exception. The already have the top two spots for the best LCD TVs next year.
I found a site that has the information for the top brand on it. The site seems a reliable source, and I hope you agree. http://www.squidoo.com/LCD-televisions
1. Toshiba REGZA 52RV530U 52 in. HDTV LCD TV 2. Sharp AQUOS LC-52D62U 52 in. HDTV LCD TV 3. Samsung LNT5265F 52 in. HDTV LCD TV 4. Sony KDL-40V3000U 40 in. HDTV-Ready LCD TV 5. Sony KDL32L4000 32 in. HDTV LCD TV 6. Panasonic TC-32LX85 32 in. HDTV LCD TV 7. Sharp LC-32SH12U 32 in. LCD TV 8. Vizio VU32L 32 in. HDTV LCD TV 9. Syntax-Brillian LT27HVS 27 in. LCD TV 10. Memorex MLTD2622 26 in. LCD TV TV/DVD Combo
You can purchase a Samsung LCD television from any electronics store, in the home entertainment section. Stores that carry these are Best Buy, Future Shop, Wal-Mart and The Source.
There are many companies that make LCD flat televisions. You find reviews on several of the top TVs like this site http://reviews.cnet.com/televisions/ in order to decide what the best one is.
Amazon has the best online selection of electronics and televisions, especially since 17 inch LCD televisions are not a common size. Best Buy may have televisions in this size for sale as a part of their small television section.
Dead pixels in an LCD TV means that the transistor is broken. It is possible to get the TV replaced under warranty or take it to a repair shop to be fixed.
LCD TV's are comprised of individual lights and plasms TV's use high levels of concentrated energy. The energy can be more easily converted into dark colors than the LCD can.
Sony and Sharp are the top two manufactures of LCD Tv's.
Haier 39 inches L39Z10A Full HD LCD TV, Samsung 32 inches LA32E420 HD LCD TV and Panasonic 24 inches TH-L24C5D HD LCD TV are best among LCD Tv's.