The camera does not turn on.

Hello, I am a broadcast production company in Korea. I am using 7 G2 cameras and one of them is broken. After updating to the latest firmware of Blackmagic broadcast g2 yesterday, the camera does not turn on. The camera's fan spins, but nothing is displayed on the LCD screen, and the lens does not work. And the focus of the other camera's 4k lens, fujinon LA16x8BRM, does not work. It's been a year since I purchased it and it doesn't seem to have been repaired. I'm worried. Please help. hdcam1@naver.com