If you have a cable box connected to your Slingbox, it could be that that the coax cable connector to the cable box is loose. I had this problem a week ago on both my Slingbox and when direct viewing the TV connected to the Slingbox. The cable TV service provider technician suggested over the telephone that I check my coax connections at all locations to insure fully finger tight. One connecter was a bare fraction loose -- but once I turned it with my fingers about 1/16th of a revolution, every thing worked fine again. Who would think the signals would be so sensitive to "absolute tightness"? But it worked for me.