Daewoo TV problem

I have a Daewoo tv model dlp-37c3. The lcd light blinks red/green, no matter what I do. When I unplug it and plug it back in, it automatically blinks. When I press buttons on the remote, you can tell it is trying to get the signal (by the red blink) but nothing changes. I have tested all my connections. The manual indicates this is "standby mode", but I cannot clear it. Also, this happened all the sudden, while I was watching tv.