Disassembled dryer, located defective and/or intermittent parts (timer, timer knob, and door switch), and placed order on-line. Opted for "standard" (fast) shipping but it still took six days (I suppose due to the memorial day weekend) for the parts to arrive. Actual parts replacement took about six to seven minutes. Getting the belt properly around the idler took more like fifteen minutes. Once that was done, reassembly was a snap.