The broil and the bake sparkers click and the gas will ignite along either of the tubes, but then the sparker continues to click a few more times and the flame goes out. It's like it doesn't sense the flame. I cleaned the spark tips, but they didn't even look dirty. The weird thing is the broil and bake will work for a few days and then they're out for a few days.

Please, somebody guide me on what to replace. A technician had come over a couple days ago and said the "control board" needed replacing - part and labor would be $679.45.