CONCERN: Customer reports R/R cooktop burner is not working. DIAGNOSTIC AND CAUSE: Inspected cooktop for proper voltage from supply line, voltage is normal. Inspected cord to terminal block for signs of failure, cord to terminal block is normal. Inspected voltage output from control to infinite switch, voltage to infinite switch is normal. Inspected voltage from infinite switch to burner, voltage from infinite switch to burner is normal. Inspected burner receptacle, receptacle is normal. Inspected and performed Ohms test on burner, found burner assembly failed. CORRECTION: Replaced R/R burner and tested. Operation now normal.