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Hi, Minor water damage. Replaced U5440. Otherwise everything seems ok. The problem is that it never loads osx, neither from internal ssd or external and the fans starts to speed up after 1 minute or so. Apples diagnostics comes with SMC error - PFM006. If it is sensor error how to find out which...

Thanks, I appreciate your help. Will run test later today

Okay. Do you have some other suggestion what it could be? It confuses me that connecting external display the graphical error is away. I had a thought that liquid came under CPU causing this but it doesn't make sense.

VCCGT does't increase on internal LCD. Could it be U7100? PPVCC_S0_CPU is only 0,6V when only internal LCD connected. It increases to 0,7V when also external display is connected. I read in a few other threads it measures 1,2V. Area around U7100 was also touched by fluid. I had to connect...

Thank you for replay. On all three I get 0,140V when playing Youtube video. Both when external display is connected and disconnected.

I have had 2 with this error. Spend some time finding a solution. In both cases it was TB cable/connector damaged by fluid. TB was not recognised and it led to "Critical Software Update". After cleaning TB lid up and no CSU.

Hello, I hope to find help with this one. Water damaged, PPBUS_G3H had short, changed U7220 and U7420. The board turns on and everything seems ok apart from bunch of small squares on internal display. They come and go constantly. The funny thing is that, when the external monitor is connected...