I have a 9700 which I bought with a broken trackpad, ordered a new trackpad, fitted it, yet it still doesn't work. The phone itself is fine, the trackpad clicks just doesn't register any swipes. Also I updated to OS6 from OS5 thinking could be a software issue, it loaded up to around 3/4 of the way, stopped for over 30 mins, so I pulled it out, now after multiple battery pulls it's stuck at 3/4 of the loading bar again, and I don't know about the red led because it doesn't work so I have no way of telling what's happened and if it is recoverable,
Any help is appreciated
Take it back to the seller and get a refund, looks like they didn't tell you the whole truth about it's history. You don't need to deal with a half functioning blackberry.