Kitchen Gas Appliances - GE Gas Cooktop Electrical Problem

The igniters and knob lights stopped working. I found an open primary in the transformer which supplies power to the igniter and lights. I replaced the transformer with a GE-brand part and everything was fine for a couple of days. Now it has stopped working again with the same symptoms. Again I checked the transformer and found an open primary winding.

Any suggestions would be welcomed.

Is it a step down or step up transformer? If step down, the problem is on the secondary side. Something s shorting or grounding intermittently and will be hard to find. Look over every inch of the wiring harness very closely. Is there any correlation between using a particular burner and the failure? IOW- it's ok until/unless you use burner X?

Thanks for your response.

It is a step up (220V for the igniter) and step down(12V for the burner lights). I tested all the burners after replacing the first transformer. The second failure occurred a day or two later. I cannot say whether it is related to a single burner or not.

Is it a step down or step up transformer? If step down, the problem is on the secondary side. Something s shorting or grounding intermittently and will be hard to find. Look over every inch of the wiring harness very closely. Is there any correlation between using a particular burner and the failure? IOW- it's ok until/unless you use burner X?

Is it a step down or step up transformer? If step down, the problem is on the secondary side. Something s shorting or grounding intermittently and will be hard to find. Look over every inch of the wiring harness very closely. Is there any correlation between using a particular burner and the failure? IOW- it's ok until/unless you use burner X?

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Try leaving the 12v circuit disconnected and see if the transformer lives or dies.