I just got off the phone with my mom and she is having a problem with her Series2DT receiver. She can no longer tune to 3-digit channels. If she enters a third digit, the first digit disappears, so entering "115" tunes just to "15" and so on. There's no cable box involved, so this is direct tuning. She doesn't remember exactly when, but within the last week she definitely tuned to a 3-digit channel. She even recently got a lineup change message regarding channel 115 being added. There've been no software update messages. None of the channels show in the guide or the channels list. I ran her through guided setup again and that didn't help at all; still no 3-digit channels. She is still running version 8.3-01-2-649. Anyone have any ideas about this?