Just took off in my Q400, but ACARS was responding differently this morning. I didn't get the familiar "Ding Dong" when I moved the conditioners to "Start/Feather". I use this audio alert to start my flight clock to time the flight to make sure that it's in the green on the report. Did something change in the last couple of days?

Problem solved. I was away for 2 days, and turned the external speakers off on my laptop. What a dolt!! Problem fixed.

Couldn't have said it better Chris!