Hi I have a Sony KD-30XS955 Wega Tv that I recently got off craigslist. I had to adjust the screen size by going into service mode, which I figured out to do just fine, but I can't save the settings at all. I've looked at other sites about it and most of them give a command for saving. I tried them, turned the TV off and on, and it still reverts to what it was before. Can someone give me specific instructions for this? Do I need to save every change individually? Is there something I have to do before saving? Please help.