CPU Fan Circuit in Desktop Motherboard

CPU Fan Circuit in Desktop Motherboard 

CPU Fan Problem:

1-CPU fan Not Rotated

2-CPU Fan rotated Slow

3- CPU fan Generate Sound

4-hang problem

5-shutdown few after minute

6-restart problem

Main Checking Point:

Ø Check +12 at CPU Fan Connector, If Absent check MOSFET /Track Path.

Check CPU FAN Control MOSFET.