On oven control, push bake & start, a 10 minute warm-up starts with the igniter glowing brightly, at the end of the 10 min. the timer dings and the display shows 350 deg temperature setting, but no ignition. Waited a couple more minutes and still nothing. Unplugged the range to see if it would reset it's self (5 Min) then tried again with same results. After a few minutes, I tried the old Army trick and tapped on the oven valve and behold there was ignition. Was this coinsidence or is the valve defective.