Sony KDL-52XBR9 has 4 horizontal lines approx 6 inches apart and blurring for first 5 - 10 minutes of use, then goes to normal picture. Picture looks to be divided into 5 sections horizontally.

Sony has been having a problems with the LCD Pannel. This is right off the Sony website.

KDL52Z5100

KDL52XBR9

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 begin_of_the_skype_highlighting (888) 649-7669 end_of_the_skype_highlighting

I have the same tv model KDL-40W4100 and around the same age. At the moment I have 16 of
these horizontal lines over the entire screen and they seem to be grouped into 2 lines per row. They are also around 4 inches and two pixel rows high. I have been looking over the Internet for months and found nothing to troubleshooting this issues. In the last few weeks more and more of these groups of lines have been showing up and now i am up to 16 of them and it is becoming unwatchable. Any help from anyone would be greatly appreciated. I also attached a picture to describe it better. Thanks!

There isa problem in CRT Board.Loose connection problem in vertical section.Need for resolder the board.

Sony has extended warrenty on 46 XBR4 & 46 XBR5 for picture anomalies - like yours. Check with Sony customer service. Good Luck.

Yeah we have the same exact problem here. Defective TV....ours would correct itself after 30 mins, but now it's blurry all the time. I'm never dropping 2K on a SONY tv again.

what kind of monitor? Have you replaced the cable? Try the pc on another monitor. You need to see if it's actually the monitor or the video card. replace the broken or defective part.

the problem there is a loose connection on the board,you said that you smacked the right side of the tv and it goes normal.there are parts that should be resolder on the board in order to back into normal operation.

Panel is nearing end of its life or has prematurely failed

Send me a Digi-pic of the screen please.. Good starting point..
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change the rgb ic thats the stk ic