Wes B Barnstable , MA November 25, 2016 Appliance: Samsung Electric Range FTQ387LWGX/XAA Samsung Range Ftq387lwgx/Xaa / : My left front burner was on high all the time no matter where i put the knob. How to replace Top Burner Control For Range, Infinite Switch. I replaced the energy regulator by unplugging the stove, 5 screws on the back panel, unplugged the wires from the old switch to the new switch, removed 2 screws that held it in, and replaced and put back together. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes