Original Xbox one possible water damaged

Send it in to get it fixed. There are plenty of third party tech companies that can fix it. In the future try not to get it wet like any other electronic device. We all know accidents happen but unfortunately things have to get fixed regardless of how
it happened

Must be water damaged, I think your only option is to buy a new one.

you may have to buy a new one, there would be no point trying to get that one repaired when you have the s and x available

It might be damaged by the water.

if it is broken, your only option is to buy a new one

If you're console is no longer under warranty, that doesn't discourage you from sending it off for servicing and repair. If water was spilled on it, leaving it plugged in is probably not a good idea while you figure out what to do.

Just because its not under warranty doesn't mean you can't do anything about it. You'll just have to pay for it out of pocket.

Here are the details for getting your product serviced: https://beta.support.xbox.com/help/hardware-network/warranty-service/getting-your-product-serviced

Something else you could try, would be taking it a local electronic hobby store or repair store and have them take a look at the console. Most places have the ability to do certain repairs, refurbishments, and evaluations under certain licenses from the
manufacturer. You'd just have to call around your area and ask what can be done.