820-4924-A (Retina 2015) Running Slow

[rkrishnan]

Hey,

I got an 820-4924-A motherboard with possibly some liquid damage and just did a Bios ME Region clean (since it had an EFI lock in it). Battery charges and it runs off battery so I was happy, but now I am running into a new issue.

The system is running very slow and kernel_task is using up majority of the CPU. When I run ASD it gives the codes PFM006, and PPN001. I installed iStat and found the Left Fin Stack sensor and air flow proximity sensor area reading as empty.

Could you please point me what I should check for? I am out of ideas on what to test since ASD isn't giving useful information. I already checked I2C_CPUTHMSNS_SDA and I2C_CPUTHMSNS_SCL don't have a short to ground, and PP3V3_S0_CPUTHMSNS_R is getting 3.3v.

I also can't find where the Th1H sensor is located on the motherboard with the schematic.


Thanks!

 

[aprendiz]

There is no need to mess with ME region if EFI lock, use original ME......

 

[rkrishnan]

Sorry I meant I cleared the part part between the $SVS tags, I thought that was the ME region. I didn't touch anything else.

 

[rkrishnan]

Fixed! One of the resistors (R5875) near the right fin stack on the schematic was loose and fell off. Soldered it back on and it works again

 

[dukefawks]

What did you do to the ME? The methods posted that you find with Google are totally wrong!