My Philips series one DirecTiVo has recently started losing signal on Satellite In 1... on transponder 20, and only transponder 20. It's strange, because it's been intermittent, but more and more frequent lately. If I go into the "test signal strength" screen, and physically disconnect the sat1 cable, I get the signal to temporarily jump as high as 70 (it's 92-95 on sat2) upon reconnect, and then rapidly fade to nothingness. Any ideas? I've searched and searched on this, but I can't find anything similar. I've already swapped out one cable, which appeared to temporarily (a week or so) solve the problem. If it were all even transponders, I would suspect the LNB or multiswitch. If it were all transponders on sat1, I would suspect the TiVo. But it's only transponder 20, only on sat1 of the DirecTiVo (the standard DirecTV receiver in the other room works perfectly). It wouldn't be such a problem if it weren't the locals, 'cause the wife watches a LOT of network programming. Help!