[SOLVED]MacBook Pro Works, No Fan!

[computercaverva]

I got an A1502 in that had a fan flex cable with a break in it. Simple enough repair, order a new fan, etc. Still no fan on power up however fan works in another MacBook. After testing the fan socket there is no data coming from SMC_FAN_RT_PWM.

Voltage Readings:

Pin 1: 5.01 V
Pin 2: 0.004 V
Pin 3: 0 V
Pin 4: 3.34 V
Pin 5: 0 V

R6061 is 99.9 K Ohm

Q6060 has 3.30 V on Pin 1, 0.004 V on Pin 2, 0.004 V Pin 3.

Possibly an SMC issue?

 

[smiba]

Could be the SMC yes, especially since there is 5V running next to the signal

Not sure if this model only activated the fan after it reached a certain temprature though, Checked with ASD?

 

[computercaverva]

I have not run ASD on it, I have it propped up with a fan blowing on it to keep cool. Will this model A1502 EMC 2835 work with ASD 3S155?

 

[dukefawks]

It would help if we knew what board number this was.

2015 models with 4924 boards the fan only starts when the system gets hot.

 

[computercaverva]

Its an 820-4924. I will let the computer sit and warm up to see if the fan gets triggered.

 

[dukefawks]

Just boot up holding the "D" and it will run diagnostic and run the fan.

 

[computercaverva]

This post can be marked as solved it worked properly when running diags