I have a similar problem with a GE Profile PT925sn4ss, this is an electric, double oven in a single space...heat up the top oven to about 450, the light goes out and won't turn on automatically when the oven door is opened. Turn the oven completely off and you can operate the oven light by pushing the oven light switch on, but the light still won't turn on by opening the door. Cool the oven down, and the light starts working normally again whenever the oven door is opened. Also noticed the top oven light goes out when the bottom oven is running at temps over 350. Turn the bottom oven off and let it cool down and the upper lights start working again. Other than the light issue, the oven works fine. Anybody else have this issue?