My Aunt and Mother both have this unit and have both experienced numerous problems with the connector breaking where it plugs into the unit. This is a major problem and needs to be addressed. I have seen other units with a common ac power supply plug that would never have this problem.
Review by Roberta Johnson on 9/13/2014
Poor Design Flimsy Connector Tip
I am as I write this stranded in the Denver airport unable to board my connecting flight because the adapter tip is broken. Heavy cord, flimsy connector tip. Guaranteed to fail. United won't let me board connecting flight. I'm scrambling to find a replacement!
Review by Pedro j. Peterson on 3/17/2014
Tip is designed to fail
The ac supply has a very delicate adapter tip that breaks very easy. I have had to replace the ac supply twice just because the tip broke. The cord with the adapter tip is not available by itself.