How to Troubleshoot & Replace Ge AP2024000 / WB24K5083 Cooktop Igniter Switch

Turned out the little switches on the knob shaft had corroded and were staying on. There was constant continuity showing with an ohm meter. Replacing the switches was very easy (always disconnect power to the unit before servicing). Bought a new ignitor module as a backup as they do go out of production after 10 years or so- another cheap and easy fix if needed in the future. 

Moved inop switch to least commonly used burner while waiting for new part. My wife wants a new cook top (this one 17 years old) but is happy as long as I can economically repair the old one. Saved about $1200. 

Replaced all the ignition Switches. A simple fix and the price of the part were right from AppliancePartsPros.com. The shipping was SUPER fast, even with standard shipping. 

Used a valve switch. Had to check which one was bad, but did that by switching one by one. Of course it was the burner that we use the most! Put the new one in and it works like a charm!