Charles A Lincoln , NE May 17, 2015 Appliance: General Electric Washer WBB2090G5WW Ge Washer Wbb2090g5ww: Washer timer stop working. How to replace Control Knob Assembly. Great videos tutorial. I fixed it just like a professional for my first. Washer is working like new. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes