I have a XM radio, the XpressRC, with color screen. I also have a lifetime sub to XM. Last week, the screen backlighting stopped working (after blinking on and off for a few hours). XM says if I buy a new receiver, I have to pay a $75 transfer fee to sub the new receiver. What I need to know, is, has anyone opened one of these units, and is the backlight something I could replace with parts from Radio Shack (like a LED) or is it more involved? Id kind of like to fix it myself, rather than send if off and not have it for a month.