Igniter will not turn off once burners are lit.
I've had the same problem for 2 years. Today I removed the four burner tops, the 15/16 inch bolt that holds the burners in place, took everything apart (simple connections underneath), completely cleaned and dried eveything. I also cleaned the 4 knobs and making sure the 4 swiches slide up and down freely then dried everything with a hairdryer. Is now works fine but if the problem comes back, I'll simply unplug the cooktop and light it manually. P.S. I stripped one of the large 5/16 inch bolt that had become weak and brittle. - Try using water or some liquid to loosen the bolts as necessary. Good luck, CHEERS!