WE have a Thermador TMH36GS Electric Cooktop. Last weenend we heard an explosion from the aooktop area. When we investigated we found the two burner lights on the left are not lighted. Later we noticed that the burners are working. There is nothing wrong with the elements. We do not know if any damage was done to the wriring. Please advice what we should do. By the way the burners on the tight side are working fine.