James C Richmond , TX February 20, 2015 Appliance: Whirlpool Electric Dryer WED5550SQ0 Whirlpool Dryer Wed5550sq0: It wouldn't start the timer was bad. How to replace Timer. Thanks to the videos, it took about a half hour to diagnose the problem and about 10 minutes to replace the part once it arrived. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes