Mac Mini, Late 2012 2.5 GHz i5, 820-3227-A Power Problem, Shuts Down
I have the following problem with an Apple Mac Mini (late 2012) 2.5 GHz i5, 4GB 240GB SSD.
Logic board: 820-3227-A
The Mac boots normally and you hear the start sound (chime). The HDMI output works and displays the screen correctly. Comprehensively the Mac functions problem-free.
After about 20-60 seconds, the Mac simply shuts down and does not go on back.
If I wait a few minutes to remove the SMC (3V) battery from the Mac and reinstall it into the Mac, the Mac will work again. After 20-60 seconds, he goes out again.
I have no circuit diagram or boardview, so I can measure nothing.
What I've tried:
- the Mac without component started (without SSD hard disk) - no success
- RAM memory changed - no success
- Power supply replaced - no success
- The Logicboard reheated - no success
Can the SMC IC (tempreture sensor) be the cause of this problem? Unfortunately, I still have to wait a few days for the IC chip to arrive. Can I test it in a different way?
About help I would be very grateful.