I have HR10-250 and a HR20-700. The HR10-250 is in my bedroom and the HR20-700 is in the basement. I have been having some video problems on the HR10-250 so I took the HR20-700 and put it where the HR10-250 was and I when I tune to the HD ABC or FOX (CH's7,7-1,86 & 5,5-1,88) I get a running...