I have a 1990 (approximate date)Tappan gas range that was my mother's. I do not have a manual and cannot find one online. The problem is that I cannot get any of the oven controls to work nor can I set the temperature for the oven. Your assistance would be greatly appreciated. Our email is ~ randhblake@frontiernet.net phone # 928-333-2000 If I could somehow get a copy of the manual from that year online, that would be terific! Thank you sooo much in advance for your help. Harold Blakeslee