When I fired up my layout yesterday and started running a train, I noticed a clicking sound in the railsounds and that the red activity light on the Legacy 990 base was flashing continuously (like a command is continuously being sent). The "8" on the CAB2 LCD keypad is continuously highlighted and the adjacent "7" & "9" buttons won't work anymore (the rest respond fine along with everything else on the CAB2). It was working fine the day before and hadn't even been out of the base. Anyone else seen a symptom like this? I'm guessing bad keypad but wanted to make sure I'm not missing something obvious before I send it back to Lionel. It's running firmware 1.4 (just because I haven't got around to downloading 1.52). It was bought in Summer 2012 and (with manually turning the charger on & off) worked fine until now.
The keypad is very clean. I actually still had the shipping film over it and didn't even realize it - removing it didn't seem to change anything. I also turned on the charger and let the batteries top off - no effect there either and the batteries measure fine.