Sony ILCE-7RM2 Repair
This camera was dropped and reads “Camera Error” when power turns on.
I was able to fix it by re-seating the sensor, it took about 3 hours to doing it.
By the way, I found something interest.
The time/date backup battery is located behind the main circuit board.
This means there’s no way to replace the battery by the user when the battery’s lifetime has reached (It will suck)