Hi guys,
I've received the transistors (MMSS8550 650mW) and replace all of them in CP (6 in total). See picture:
https://drive.google.com/file/d/1Ov67EmCHTIKcjZax9ZtXYq5sXswFn9V_/view?usp=sharing
Now all channels are working fine. In order to test my theory, I add a heatsink and one of the CP temp. sensor to the heatsink:
https://drive.google.com/file/d/1Eu2gpqcnD9G3Mood6_GhxpPIZo20Gd8u/view?usp=sharing
Running CP with my default set using 6 FANS of 3 Pins, the temp. increase really fast above 50ºC (It was running 30min. and temp still increasing)
https://drive.google.com/file/d/1yxSJR9RptT5DWbWlaPC4JDVWpXvHn6Ci/view?usp=sharing
I set all FANS to 100% where transistors shall have a min. power dissipation and temp. quickly drop below 40ºC (After 5min. temp. still dropping)
https://drive.google.com/file/d/1bmq44mwGj3zmAVplj7DJ6pPLf9wBmmuT/view?usp=sharing
As a conclusion, CP can come from the dark side replacing the transistors but you have to be really carefull when using 3 Pins FAN because of Power Dissipation. With this transistors (I'm not sure if factory one are 650mW or 350mW) you can run a 3 PIN FAN without constraint if Current Rating < 0.2 A.
If current raiting is > 0.2A you shall use high RMP to avoid thermal issues.
I hope that help people to fix their Commander Pro.