How to get repair my Tab

I purchased Tab 10.1" through one of my friend from US. Now I am in India and my device is LOGOSTOP now. I have showed this device in Samsung India Service Center but in vain.

I want to get it repaired in US and ship my device. Please let me know how could the device by sent there and approximate charges I have to pay and the warranty afterwards.

my mail address is rameshchandrakaushik4@gmail.com