CONCERN: Customer reports Coil cooktop burners are not working. CAUSE: Found cooktop receptacle failed. CORRECTION: Replaced receptacle and tested. Operation now normal. NOTE: Tested for proper 240v volts to the unit. Voltage tested good from wall to the infinite switch and from infinite switch to the burner receptacle. Found an internal short at the receptacle. Infinite switch tested good at the time of inspection as did the coil burner.