So I have this 14 year old oven and now the front left burner(biggest) will only work when I turn on the small burner behind it.

Background:
I have replaced the control board back in Oct. '10. I have recently had issues with oven temp (lower than normal) and waiting for the sensor to be delivered since I thought that was the culprit.

Is my my oven control board going out again or is it just coincidence that the surface element switch to the burner is going out?

Thanks in advance to any responses.