Every 12 - 15 months I have signal strength problems with Cablevision. I use a 3 line splitter in my line input. I've tried different splitters and strange configurations (2 line splitter connected to another 2 line splitter). This time, as I was having troubles my sister-in-law in my basementwas having the same problem. Any suggestions on fixing this without getting Cablevision to visit again? Thanks for your input.