gets you into the code screen. Apparently pressing the same two buttons a few more times allows you to program in a new code. Of course this only works when you have the original remote as most ‘universal remotes’ don’t allow pressing two buttons at once.
It seems there is a back-up battery inside the TV and when it fails the TV locks up this way. Sounds annoying to me but I suppose Mitsubishi thought it was a good idea back when the TV was new.
My 48″ Samsung projection TV just got junked because a major part is no longer available. It’s three years old! You have to love TV makers these days!