[rcubed1]

set oven preheat to 425 degree. After a 5-8 min noticed the oven had not finished preheating which was unusual. I opened the oven door and could see and hear the burner was lite. I did notice a pulsing whoosing sound like part of the burner was trying to light but failing. I also notice what looked like the right side of the burner area lite but the left side was dark and the pulsing whoosing sound seemed to be coming from that area. My wife informed me that same thing happen previous night. She was frightened that something was wrong so she turned off oven but did not inform me until I had same problem. Oven has worked without problems for previous 10 years.