Does anybody know why does it keep restarting on a constant loop?

Hello guys I have a problem with my galaxy gear 2 Samsung watch, last year it turned off and never came back on again, after I opened it I noticed condensation inside of it, I dried it up real good, battery kept getting hot so I bought a new one, a along on the same loop, and today I decided to give it a try the battery went from 100 percent to 40 percent in about 10 minutes, then it asked me to start energy saving mode so I notice it starts at 15% and immediately goes to 4% at this point I believe there is a short but what? Any ideas or anybody seen this issue before? I don’t have a microscope so it’s gonna be a challenge.🤦‍♂️