Ed C Chino Hills , CA June 16, 2015 Appliance: Thermador Star Burner PCS366 Thermador Cooktop Pcs366: Oven and broil will turn on intermitently. How to replace Range Potentiometer (Rotary Control). Replaced Oven potentiometer part number AP5325317. Original order I placed was for the wrong potentiometer which was for the burner. Repair job took about 20 mins. Only 2 screw hold the potentionmeter from the front of the oven which are exposed after the knob is pulled off. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes