An older jenn air grill range model # S125- the left burner does not work front or back and the light stays on

SOURCE: electric start gas range

You either have a short in your electronic ignition or the ignition board is defective. Check the wiring to the ignition board for shorts. also check and make sure you ignitors are well grounded.

SOURCE: kenmore glass top range left front large burner out

check the burner socket, it is likely that contact is being lost where the burner connects to the hardwired portion of the system (the socket). It is not unusual for the socket to "burn up" when there is a poor connection to the burner resulting in the burner being replaced and the new burner not working or working intermittently.

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SOURCE: viking range burners won't light

All of these ranges have a spark module at each burner sight and they all click when ever you attempt to light one burner. Therefore, it can not be assummed that the spark module for those nonworking burners are actually clicking. Remove the burner covers and actually look for the sparks. If there is no spark make sure the connections are nice and tight. IF they are, you most likely need to replace the spark module.

SOURCE: jenn-air electric range model JES9800AAB some kypad # not working

Unless they start working again after it has a chance to dry out the touch panel will have to be replaced. This happens when excess moisture gets between the very thin layers of the membrane.
eric

SOURCE: How to replace spark igniter - Jenn-Air SEG196 gas-electric range

took off the knob to the ignition system to clean and spray got onto the ignition under the dial and now the two front burners won't ignite unless I turn on one of the functional back burners then turn on the front burner. How do I repair this?