Chosen Solution

I had a water damaged iPhone 5s, I cleaned it and replaced the battery. It was working fine, no problems. Every thing tested and working (camera, microphone, speaker, home button etc etc) When I went to put a new battery in and put it on charge it just turned off and I can’t get it to come back on. Does anybody know what might of happened to it? I’ve tried another battery and it doesn’t work, all the batteries I have work perfect because I have repairs on other phones so I’m able to test

the board might have died… does it get hot or any warm at all ?