Samsung HLN4365W 43" Rear Projection HDTV-Ready Television "turn voice television program" Questions

...television will freeze and not turn off; other times it turns on, you can hear the voices the screen is black but can not see the picture. In the middle of a program you can hear the television and ...

...turn it on and it turns on, the screen stays black but I am able to hear the voices of the TV program for a certain period of time, yet the screen is still black. After about a minute or less, the TV ...