After repairing iPad battery, I turn it on and get I spinning logo.

Hello,

I have just replaced my iPad 1 (3G) battery but now when I turn it on the apple logo apears for about 40 seconds then I get a spinning logo. It never fully turns on. The spinning logo freezes every 20 seconds, but then starts again and the cycle continues. If I plug it into power you can hear the charge sound but still nothing happens. When I plug it into my computer, it shows up for a second but goes away in about 20 seconds.

I hope someone can help me,

Thanks

Marcus

Edit:

I still haven't gotten anywhere… I took it apart and put it together for a second time but till no avail. Any suggestions?