Why won’t my ps3 controller turn on?

I recently bought a used ps3 controller unopened but definitely dropped before. It was missing a trigger. I assume some kid pulled it out. Anyways I tried to turn it on and it didn’t turn on. I even swapped the batteries. With a charged battery. Nothing happened. I opened the board and removed everything’s cleaned the board with 99% ipa. Put it back together. Plugged it in and still nothing. I thought maybe it was the charging port. So I removed the port and replaced them. No idea why it still won’t turn on. Any ideas? Is there a dead chip?