Sony bravia kdl52xbr2 problem

12 month warranty. dont know your country, here (Oz) your tv's warranty includes in home pick up

check sony.com and use model number, kdl52xbr to search

Warranty Terms and Conditions – Includes Standard and Extended Warranty for the following products:-
Bravia LCD TV/ Grand Wega LCD Rear Projection TV
Standard Warranty Terms and Conditions
1.1 Subject to the terms and conditions set out below Sony agrees to repair or replace at Sony’s cost the Sony product, and any Sony accessory supplied with it, purchased by you in Australia or New Zealand from a Sony Authorised Dealer (Product) when the Product does not perform in accordance with the manufacturer's specifications during:-
(i) the Standard Warranty period is 1 Year from the date of purchase; and
(ii) the Extended Warranty period specified (if purchased in accordance with section 2.1 below).
1.2 Proof of purchase (i.e. bill of sale, invoice or purchase receipt) must be presented when requesting service under the Standard or Extended Warranties.
1.3 Sony reserves the right to replace the Product or relevant part with the same or equivalent Product or part, rather than repair it. Where a replacement is provided the Product or part replaced becomes the property of Sony. Sony may replace parts with refurbished parts. Replacement of the Product or a part does not extend or restart the Standard Warranty period. Replacement of a part during the Extended Warranty period does not extend or restart the Extended Warranty period. If the Product is replaced during the Extended Warranty period, the Extended Warranty automatically terminates upon replacement.
1.4 Included in the Standard Warranty for Australia & New Zealand is an in-home pick-up service for television receivers with screen sizes greater than or equal to 67cm provided the pick-up address is within 25kms of the nearest Sony Authorised Service Centre.
1.5 Included in the Extended Warranty for Australia only is an in-home pick-up service for all products listed, except where expressly excluded, and provided the pick-up address is within 25kms of the nearest Sony Authorised Service Centre.
1.6 The Product will be at the owner’s risk whilst in transit to and from the Sony Authorised Service Centre, unless transported by Sony or its Authorised representatives.
1.7 Sony and its Authorised Service Centres may seek reimbursement of any costs incurred by them when the Product is found to be in good working order.

Hi,hoping that the cable connections are right(check the cable connections once again)..... Sounds like you may have a problem with the video driver boards? I would call up the store where you bought it and ask for a new set or service on this one.
More than likely this is a bad display (lcd screen) the drivers in the lcd display have some problem...... the tv is just a month old so you are still under the warranty period....... just contact the sony outluet where you purchased or the manufacturer for servicing of tv