MacBook Pro black display after water damage

I spilled a glass of water on my 2019 MacBook Pro. I immediately turned it off, then left it to drain for 48 hours. After turning it on, the display remained black, but first I saw the whole Touch Bar and heard a voice saying "user name." I force-restarted it: now I just see the "esc" button on the Touch Bar, nothing else. The caps lock LED is working. I tried with an external monitor without success. I also tried to restart it in safe mode or reset the PRAM/NVRAM, but without luck. Do you have any suggestions before I take it for repair?