Jeanne B Southborogh , MA October 27, 2018 Appliance: Whirlpool Trash Compactor GX900QPPS1 Whirlpool Compactor Gx900qpps1: Needed an on/off switch. How to replace On/Off Switch Knob (Red). Plugged in the new one purchased Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes