My Whirlpool cooktop range is giving me problems. I had the oven on and 3 burners going when I noticed that nothing was heating any longer. I shut oven off and burners. When I shut the last burner off the clock display shut off and everything (push button controls)was dead. When I turn a burner knob to turn on one burner the display lights up again but nothing heats. I did turn the breaker off & on but no improvement. If someone could just point me in the right direction I would appreciate it. Thanks so much!