Replace circuit board for EM Lock

Today I'm going to show the better ways to repair and saving your $$$ for EM Lock. Most of technician nowdays always taking a shortcut by spending more $$$ to replace new set if EM Lock.

Common problem in EM Lock is on the circuit board. Loose connection, leak diode, blown capacitor and resistor.

On the left side is the spoiled circuit board while the right side is recond unit (i fix it to replace new diode and ceramic cap.