I'm very sorry for any inconvenience this may have caused you. Unfortunately, this sounds like it may need servicing. Here’s the thread where you can get details on setting that up: http://forums.cnet.com/7723-13973_102-542437/service-issues-click-here-for-help/
Help! I have a Samsung Model LN32C450E1D. Model code LN32C450E1DXZA. Serial # Z1MG3CHZ211453R. It was moved and dropped about 2 feet and landed on its base. I now have full audio but no picture. When I turn the TV on, I see picture at the bottom of the screen for 1 second, then the screen goes black. I have taken the back off, but nothing is unplugged and everything looks good. Can you point me in the right direction? I took the back off of the TV and everything looks right. Suggestions?