Lock light is blinking on maytag precision touch control 500 display. When unplugged and replugged, lock light blinks with the number 40 and can hear ticking noises coming from unit, also can not use any functions of oven (ie, bake, broil, clean). Cooktop burners work fine.
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The heating coils in the oven need to be inspected very carefully where they plug in to the oven wall. You will need to remove the back covers and check the insulators and wiring harnesses. Over time the insulation can break down and oxidize the metal connections. You can use a voltmeter or test light to verify that the coils are getting voltage from the thermostat/switch. replacing parts is cheaper than buying new if you can find the parts.
make sure the wire is connected to the ignition(where it sparks)if it is gently clean the sparking surface with a piece of fine sandpaper.Hope this helps,if it still does'nt work you may need to replace this part but it should'nt be expensive and you can do it yourself(usually one screw) ps sorry for the late reply.