I have a Changhong Flat Screen model number LED50YC2000UA and it conforms to ANSI/UL STD 60065. This television worked fine last night, but this morning there is no picture. The sound comes out just fine, but no picture. I changed input as well as unplugging and plugging it back in, and checking all inputs to the television. I am not sure what is going on, but I would like to see if anyone could help me.