I have an older Magic Chef gas stove, about 42" wide, standard height. This stove has a 6" pan storage compartment on the left side. I do not have the model number. There are 4 burners with a rectangular frying tray in the middle. The two ignitors do not work (one ignitor for each two burners). I do not hear any clicks. In the past, the ignitors worked fine. Question: Is there a fuse in the circuit before the ignitors? How to replace the ignitors?