Is display MacBook Pro fuse or software protected against overpowered/ short circuit?

I did accidentally overpowered (12v) the USB Port of My MacBook Pro 2015 by putting a powered male usb. (I know that is stupid of me). Immediately the display and the light of my keyboard went off. I hear on the sound of the MacBook that the Mac is still alive. Now I am questioning myself. -are the display and keyboard light dead and have to be replaced? -is there any protection mode designed by smart apple engineers to protect such a rare situation. By for example a fuse (for backlight/display, I found on YouTube the replacement instructions already. For keyboard I didn’t yet found any) or a software mode? I’m not able to search for any resource to help me solve this. What guides or steps are people using for this situation?