I can't get a picture or sound. The TV was working fine. I hit a button and somehow, the TV stopped getting sound and picture. I have clicked through all possible components (1080, S-video etc) and still nothing. The TV is set to cable and I have scanned and searched all of the channels for my area. I can't figure out what was pressed to make the TV do this.

Televison & Video - Astar - LTV-3201 32 in. LCD Television