Vu — vu 43 inch smart led tv

I had bought vu led previous year in last second month and its model no is 43ga. It is 43 inch smart led tv. I bought it by online shopping thorough amazon and it was delivered and installed properly. And it was working properly but yesterday it shut down automatically and then did not start again and does not show any signal. And it is in warranty period so i request you to check this as soon as possible.. Thankyou