June 8, 2017

Sensors problems on Macbook Air A1466

I started ASD test util on my Macbook after repaired SMC_RESET problem and got this. Three sensors TC0D, TC0P and TM0P test failed.

TC0D, TC0P & TM0P Sensors TEST Failed

Firs of all you need watch Louis Rossmann video where he explained steps to solve this type of promblems. Next...

If you diagnosed same sensor problems on you A1466 or any others model whith same architecrure like I am than check SMBUS betwen SMC and U5570 I2C_CPUTHMSNS (SDA/SСL). In my case it was R5260 and R5261 flow away after ultrasonic cleaner.

Scheme where resistors is.
Place on Board two pullup resistors on SmBus line.
Tests after placing resistors.

Thanks.