Did you buy it new less than a year ago. If so, it is still under warranty. Go to NikonUSA.com and find out where to send it to for repairs. Or, if you bought at a reputable camera store, go back to them and have them send in for warranty work. Don't wait. If Nikon can't fix it they will give you a new one.
Yes, anything can be repaired. The last time I saw, long time ago, there was a flat fee for any repair. At that time, it was $200. But you should still have the warranty in effect.