Hi Display Veteran & BSdhaliwal, I have updates for you.
The local sony tech replaced UB1 board (per tech that is what is causing this issue) - and that didn't solve my issue. I have to go for it per Sony Customer Relation team. By the way the Sony Repair Tech was now 100% positive about issue is with the PANEL.
As you have mentioned earlier it is not UB1 board that is causing this issue - you were right about it.
You said that replacing the FB1 board will solve my issue - and I asked earlier what is the right part number for my TV and you said that - I should buy A1418997A part number.
I google the part number (A1418997A) and I came across following web site and I have question in reference to that.http://www.shopjimmy.com/catalog/pro...6-a-fb1-board/
The above site has the FB1 board part number which is slightly different then what you have recommended. So my question to you is - what is difference between -
A-1418-996-A (per ShopJimmy.com) recommend part number for Serial Number Range for KDL-52XBR4 and KDL-52XBR5 is: 8100001-8499999 and 8600001-above. And my TV does fall under this serial number range. By the way I could not find the part number that you have recommend on the same web site.
A-1418-997-A is the part number that you recommended in earlier post.
So do you see any difference between these part numbers?
Should I just go ahead and buy the part number per above website?
What are the chances that I might have issue with PANEL?
Also if some one can suggest instructions of replacing the FB1 board - would be a great help.
I would appreciate your suggestions.