When the burner on an electric stove comes on but only works at a high heat setting, it indicates that the burner control switch has gone bad. Try replacing it to see if this solves the problem. \
Turn off all power to the stove, either by flipping the breaker or unplugging the stove. Remove the knob that controls the malfunctioning burner. \
You should see a knob post and two mounting screws. Remove these screws. \
Move to the back of the stove. There is a metal shield here that is connected with mounting screws. \
Remove these screws and pull away the shield to expose the control panel. Locate the switch, which will be surrounded by a wire harness or by several wires. \
These wires must be removed from the switch, but take a picture first so you can see how it all fits together. Pull out that old switch and dispose of it. \
Connect the wires to the new switch. Hold the switch in place and re-attach the mounting screws in the front of the stove. \
Replace the metal safety shield on the back of the stove. Test the power and the new switch before you push the stove back against the wall. \