TV broadcasting Timing out after 30 seconds - DirecTV

My tv broadcasting is freezing after 30 seconds of broadcasting then showing the U-verse signal lost message. Changing the channel brings back the broadcast but I have to change it every 30 seconds to watch live tv. This is for every channel. I have already reset the box and modem.

This question, "TV broadcasting Timing out after 30 seconds," is about DirecTV channels, programming, equipment, and sports.