[Resolved]  Videocon Slim Trim 29" TV — TV automatically switches off arbitrarily while changing channels

I purchased a Videocon 29" Slim Trim TV Set in November 2007 and after a couple of months i noticed a strange problem in it. While surfing channels, it suddenly switches off arbitrarily on any channel. There is no problem with the power supply or the cable channel. Its the TV set that is faulty. The TV set is still under warranty and I would like to have it either serviced or completely replaced with a new set. Please let me know the further course of action.