Symphonic TV WF-13

Question

This TV had been working fine. I have a dish network remote programmed to control the TV functions. When I hit the mute button on the remote it came up with a menu with the numeral 1 in each corner. I had not seen this menu before, and the only way I could get it off was to turn off the TV. Now the channels only go to 69 and none of them are viewable. I'm not sure if this is the problem but I can't find any way to change from cable to antenna in the menu that comes up with the menu button.