I had these similar symptoms. Initially the dryer always displayed 41 and the cancel button didn't work. I could never turn it fully off. Then after a week of pondering that the unit just wouldn't turn on at all. The opposite problem. In our case we figured out that the Touch Up button was permanently depressed. Looking at it from the backside, that column was a little bit askew; (when functioning) it was still able to activate the button, but if it was pressed too far it would slide off to the side, making it even more angled and then the friction of it being more askew than it wanted to be kept it in place. It didn't take much pressure at all to free it, but it's hard if not impossible to apply that pressure when everything was assembled.