Alan M Chattahoochee Hills , GA January 21, 2017 Appliance: Model MCS130S Lights not operating in dacor wall oven Appliance Parts Pros' information on Dacor is limited (Dacor's fault, not APP's). Decor technical support said problem I described was probably transformer or perhaps PCB. APP, who was also helping me with an LG refrigerator issue, accepted my order for the Dacor transformer which was delivered promptly. Replacing transformer is fairly simple. Pull oven partially out of wall to gain access to metal panel on top of oven. Access the transformer, one-by-one switch wires to same terminals on new transformer, and then unscrew old transformer and screw in the new one. Replace oven into wall cabinet and turn on the circuit breakers and then, "let there be light." 6 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes