Hi, I have a ur4u-mdvr-chd2 remote that came with my motorola dvr dch3416 from charter cable. The remote works for everything except the button for changing the aspect ratio. I have tried all of the codes for my tv and I still cant get it to work. My tv is a 52" sharp d62u lcd. Doe anyone have any Ideas. I hate having to grab another remote every time I go to a 4:3 hd chanel.