My jailbroken iPhone won't turn on?

I have a jailbroken iPhone 4 that won't turn on! I used redsn0w to tether boot it and it still won't go past the Pineapple stage, the Pineapple will come up, but after a while it will switch screens to the apple logo! I have tried iTunes and it won't connect to it! Does anybody have some suggestions? I would greatly appreciate it!

It's broke you gotta send it out to get it fixed

Try to put it into DFU mode and then connect it to iTunes and restore it