the voltages on each pin1=0v pin2=0v goes to ground on continuity pin3=0v
pin4=3.3v pinv=0v. on diode mode pin1= 0.500 pin2=0 pin3=0.700 pin4=0.600 pin5=0.500
the voltages on each pin1=0v pin2=0v goes to ground on continuity pin3=0v
pin4=3.3v pinv=0v. on diode mode pin1= 0.500 pin2=0 pin3=0.700 pin4=0.600 pin5=0.500
Assume pin 2 is the GND of this IC the rest of the pin's seams to be fine
If Pin 4 is the enable Signal to Drive Swatch on +5V to Fan & HHD you are missing +5V input
What if you put a jumper +5V to fan & HHD and see if the problem goes off
Replace those 2 caps if you can
i found a 5 leg chip near on dvd connector the pin with the red marked is connected to the caps on the hdd and fan side if you inject 5v there the fan spins
if i injeck 5v on pin 5 on the ic the fan turns on because this pin is connector to the capacitor near the hdd connector and two caps near the fan connector
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