My Samsung range is displaying an SE code

The SE error code indicates that you have a shorted key. 1. Take out keypad from the main PCB. 2. Check whether between connector(CN05) pin and pin on main PCB have a short circuit. 3. If there isn’t a shorted area between the Keypad, replace or repair keypad. 4. If there is no problem with the connector on main PCB and cable of keypad, replace the Main PCB