FS1

Within the last month, my Fox Sports 1 channel comes and goes, it will work for like 2 mins. then blinks out and says it's temporarily off air Fox Sports 1 HD  please check back later. Now, mind you, from 11:00pm til 6:00am it works fine with no interuptions, but after 6am forget it. I'm running the explorer 4240 Sciencetific Atlanta HDC for the last  or 4 years now. And I have no probelm in my other room with that little black box on another tv. I've rebooted too many times to count and to no avail. Sometimes, if I catch it just right, I can change channel, then change it back to FS1 and it'll come in for a few seconds then blink out again. This is also happening on my CMT channel now. It acts like its scrambled. Any help??