[Resolved]  Onida / Colour TV, KY Thunder Unique Collection — screen showing a coloured line

my colour tv, Onida KY THUNDER UNIQUE collection is having some problem with screen. After working some time, screen become blank and a colour line is showing.
The TV was switched off and unpluged before I went to native place. And after 10 days I came back. then i felt this problem.
I am using SUN Direct Dish connection. I tried with other alternative by starting DVD player. Then also the same problem in screen.
I am staying in Silvassa, UT. of Dadra & Nagar Haveli.
I purchased the TV from Mili Electronics, the authorised dealer of Onida.
So kindly give some advice. My mobile no. is [protected]
kindly give any contact no of your authorised service personal.
my id [protected]@rediffmail.com