iPad Mini 2 won't turn on
So I realize this post is a bit preemptive since I don't actually have the iPad in my hands yet but I bought a broken 32 gb iPad mini 2 wifi on ebay the other day, and I'm trying to come up with a plan of action on how to diagnose what's wrong with it and how I can fix it.
All I know about the iPad is that it doesn't turn on, not sure if anything happens when you plug it in because the seller didn't really answer my question when I asked (but I assume if it were to just vibrate a couple times without powering on it's just a loose battery cable as is the case with iPhones). However, if this is not the case, what should I be looking at next? Could it be a faulty battery, or something else? And how would I be able to tell? Finally, if nothing else appears to work and it's possible that the ipad is water damaged, could anything be done about that to fix it?
Thanks in advance