4MOT: Fan motor
Assuming the dealer fan was good, it would appear you have a problem with the logic board.
Hello, thank you for your help. But I had to solve in a completely different way. Unfortunately, the page proposal was no longer offering the SMC for my mac mini. I checked out other possible solutions on the net, but none have solved the problem.
So, despite not being a big electronic, I took a soldering iron, scissors and a trimmer and I made a manual change to the mac mini for reuse without hearing his fan at 8000 rpm.
First of all I removed the fan from the mac mini.
I cut the wires and I have identified the positive terminal, speed sensor, and the negative pole. To do this I used a 12V battery. With a resistance of 30 ohms I tried to feed it. (I wanted to use a resistor to avoid burning the fan by reversing the poles).
Once you have found the poles I bought on ebay the following product:
I cut the wires to the input voltage and have them welded to the cable connector on the logic board, and in the end I soldered the output cables to the fan.
Now finally straightedge speed from 3170rpm to 8000 rpm and the temperature at minimum speed with little load is 50 °.
The trimmer zalman warms up a little, but for me it is the best solution to continue to use my mac mini.
Unfortunately, the problem of my fan was definitely a hardware problem on the logic board.
Thanks for your help and I hope that my solution can also serve to others with the same problem.
P.S.After this operation is a day that the mac mini is running without any problems
Sorry for my English by google ..