My series 3 will lose all signal or start pixelating badly randomly. Usually this is fixed by shaking or jiggling the wires in the back coming from the attic antenna--> central box --> living room wall mount --> plugged in amplifier --> to the tivo unit. The problem seems to be from the wall jack to the tivo part of the loop. If i jiggle the wire and lay it just right my signal strength is 90+% on each station. If the wire moved 1/2 an inch my signal goes to 0 or 20%. I have tried replacing each wire back there but i have no idea what the problem could be at this point. Any ideas?