How to Troubleshoot & Replace Whirlpool AP6007668 / WP3149404 Range Infinite Switch Top Burner Control

Replaced switch 

I trouble shot it with an AI website, then went to Appliance Parts Pros to use their evaluation tools, found the problem, found the part, ordered it, received the part the next day, watched the Appliance Parts Pros installation video, installed the part, and that fixed the problem. 

Replaced burner switches 

Remove and replace infinite switch. 

Replaced the infinite switches 

I replaced the control switches and the stove is now working properly. 

Replaced the control knob switch and now it works fine. 

I removed back and replaced the surface switch and also replaced all four knobs 

I just replaced the old part for the new one by removing the knob, screws on the knob and on the back of the stove. Unplugging the cords that go to the damaged part, then putting the new one and assemble everything back and it was done. I thought we needed a new stove. 

I ordered 4 new burner switches, and took out the old burner switches, and replaced with the new burner switches.