Latosha, not sure what you have tried yet. the first thing I would do is, what Luke suggested. That is always a good start. Also make sure that you unplug any devices that are plugged into the in/out/ ports of your TV. After that, it is time to dismantle your TV. Check for the fuses, and very closely inspect the capacitors of the power supply. Check for any bulging, leaking etc. Make sure you discharge any of the capacitors prior to messing with it. Keep your TV unplugged as well. The problem with any of these great TV's is the heat that is being generated. This heat can easily destroy the capacitors. If you find any that need to be replaced, it's a relative easy and inexpensive fix. You can of course exchange any of the boards separately as well from places like this. You can download a trouble shooting manual for your TV from here and the complete service manual is available here. There is also a great discussion about a very similar problem on here. Hope this helps, good luck.