Free fix by Sony. They have stepped up and resolving the issue by replacing the TV with a new unit.
Call them at 239-768-7669.
Limited Warranty Extension for the LCD Panel in Two 2009 Model Year 52" BRAVIA® Televisions (KDL-52Z5100 and KDL-52XBR9)
Dear Valued Sony® BRAVIA® customers,
Sony has identified a limited number of 52" BRAVIA LCD televisions (models listed below) which may develop picture anomalies on the screen related to the LCD Panel.
As part of our commitment to quality, under the terms of the limited warranty included with the product, Sony will replace or exchange the LCD Panel or television for any Affected Model experiencing picture anomalies due to LCD Panel failure through March 31, 2014. Please note that except as set forth in this announcement, the terms of the Sony limited warranty for these products continues to apply.
In addition, customers who paid out-of-pocket to repair the LCD Panel due to picture anomalies on one of the Affected Models prior to the date of this announcement may be eligible to be reimbursed by mail for parts and labor expenses. To receive reimbursement, please follow all of the directions on the claim form for reimbursement; all claims must be postmarked by November 30, 2012. See claim form for complete terms and conditions.
To arrange for repair of your television if experiencing these issues, please contact Sony at (888) 649-7669.