Not booting unless plugged in. But...

My MacBook Pro won’t boot unless plugged in, when I do plug it in I don’t have to even press the power button for it to turn on. However after removing the charger it will turn off after 1 minute usually. It is showing that it’s charging, it’s currently at 80%.

There’s also an issue with the screen, there’s a thick line that is high contrast, and when it gets hot it goes to a lower contrast.

I’ve tried Resetting SMC and NVRAM neither helped.

There was a recent spill, however it was cleaned up deeply internally and there wasn’t a boot issue until I put it back together. The screen issue was there immediately after the spill but a lot worse, I could even read anything as it was a fully broken up image.

When I check the cause of shutdown they are all okay except for when I unplug, it says -14 which I’ve read is a power surge. Any ideas would be really appreciated.

Thanks :)

This is the coconutBattery screenshot