I have had TV reception problems. The signal flickers on and off and I sometimes get the message, "searching for signal..." DirecTV sent a tech out here and he changed the LNB and the multi-switch. That helped a little, but the signal strength shows only 70-80% on satellite 2. The tech then swapped out the cables feeding tuner 1 and tuner 2 on my original DirecTivo box. It still showed the weak signal on satellite 2. The tech told me that means the problem is my tuner. Does that sound right?