Sure, Lisa; like the warning on a pack of cigarettes: "WARNING: BRAILLE DISPLAYS MAY BE HAZARDOUS TO YOUR MENTAL STABILITY!!!" Seriously, Braille dispays are wonderful, but they're a pain. It's the old story, that, the more moving parts you have, the more things can break. That's why I try to move as little as possible. hahaha Your frustration is justified. Actually, it really should be possible for consumers to easily clean a display, without having to send it back for cleaning. That's what's really needed. You shouldn't worry about creating a bad impression with your students. They need to learn that, with any technology, things just happen. They can understand that, if a Braille display isn't working right, that's no reflection on you. Well, I sure hope you can rectify this situation in some way. Bob and Maxy-wax
