Xiaomi redmi note 3 - does not turn on
All greetings, got into the repair of the subject, an autopsy showed that I was rummaged in it by other repairmen, tk. All screens are removed. I started to watch, it was found out for food, it's strange that the previous repairman was pushing all the screens, and the goat on the power controller, which stands outside the screens, did not find it. Well, all right, the controller was blown off, it disappeared. Changed it, the symptoms became so - there was a charge indication (red LED), after the battery was almost charged, the vibration vibrator jerked, but on the screen a deaf darkness. The current consumption from the 0.45a LDP is through the power connector, if you hold the power key for a long time, the vibrator will jerk, but nothing else except this happens.
If you remove the battery connector and apply power to the LBP via the micro usb connector, the current from 0.15 in several steps is increased to 0.3A, the vibrator is also jerking, but nothing happens.
At the moment when vibrating, if the cord connects the body to the computer, the computer issues 1-2 signals about the connection of the new device, even some firewood began to set, but the device seems to be connected and after 2-3 seconds it turns off.
I ask for help, what is the logic to look further? The situation is aggravated by the fact that the previous repairers could break something, blow it off or overheat it.
Thank you in advance for your help!