I've been collecting Genesis games the past couple years and finally got a console today through Ebay. I sold my first Genesis console in the early 90s. The console is in poor cosmetic condition and the screen has wiggly light and dark lines. Is the spotty screen a console problem or could it be caused by the RF connection? Also, most all of the games, except maybe one or two, aren't properly saving or loading saved games. Is it even possible for this to be caused by a defective or worn console? Or have most Genesis carts lost their save function by now?