(1) "Tiny Cooling Fan" button switch Reid loses its elasticity
Due to loss of elasticity of the keyboard switch, key switch will cause poor contact. You should replace the key switch.
(2) "Tiny Cooling Fan" bad motor power line contact
Re-welding electrical power lines, to troubleshooting.
(3) Connection "Tiny Cooling Fan" between the motor start capacitors
Check the start capacitor connection, restart capacitor soldered connections or replace start capacitor connection.