canon 80D How to fix SD card door and micro switch?

Hi everyone. My Canon 80D just stopped working. First thought were batteries but all fine and didn´t get any signal off LCD panel nor anywhere else. However I have just realized that by touching SD card door and trying to adjust it manually it eventually comes back to life. However don´t know how to fully solve it. I have come across similar problem and perhaps solutions on Canon 70D as it maybe micro switch. Can anybody give me advice? Many thanks