I've been trying the various buttons on the remote and notice now that it is not just the screen buttons that are giving me the problem. The other buttons that are causing the problem are the top 2 hard buttons on the right side. They are marked for Channel + & - but I have them programmed for dimming and brightening. SORRY for the bad information in the previous post!! I hope this information will mean something to someone who can give me an idea of what to do.
Thanks again,
.....Gord