I have an RCA 27in. screen TV. Cannot program, all is fuzzy.

try unplugging and plugging back in 2 minutes later. go to menu and find channel selection. scroll down to where it says channel. then using volume up and down buttons. will add or erase channel. just play with it and you will see what im talking about. go to channel 4 and press volume up. this will save channel 4 in memory. if no work, try turn on video souce and do a auto program in menu. fixed. enjoy!