Hmmm. I have the same mysterous problem with my 1989 Atari Badlandls. Every once and a while I turn it on, but the monitor dosn't turn on; when I turn it off after this I see A closing box on the monitor (like that of turning off a television. It seems like it only happens when I turn the machine off, and turn it back on in less then 10 minutes. What could this be?