Jm Z Fort Mill , SC January 01, 2017 Appliance: Whirlpool 27" Built-In Electric Combo Sensor/Sc (Gold Line) GMC275PDT07 Whirlpool Oven Gmc275pdt07: Oven/microwave began beeping randomly more and more then oven would not reach or hold temperature. How to replace Control Panel Assy W/Membrane Switch (Black Model). Thought it was the circuit board. It was actually sticking/defective touchpad keys. I learned of this possibility from your site blog/problem discussions. You had the touchpad assembly available. Wrong color, but othewise same. Bought and installed the new touchpad. Oven and microwave now work fine. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes