Samsung India - Samsung LA37A550 LCD TV - panel change and warranty

I purchased Samsung LA37A550 LCD TV on December 2008, it worked fine for 2 years and then in Jan 2011, it developed a problem of DARK images. I had to get the backlight to MAX and brightness to MAX to watch the images. I called Samsung service, they said panel has to be replaced. Cost = approx 20000 Rs.
After about 4 weeks i.e in Feb 2011, the problem rectified automatically. I switched back to my standard settings i.e backlight=2, brightness = 50
During the last one week (Jan 2012), the TV developed WHITE BRIGHT SCREEN with PHOTO NEGATIVE images. Called Samsung support and they again told me to change the panel. Cost = approx 20000 Rs.
I did some investigations on my side and figured out that the t-con board is the culprit and not the panel (I actually ripped off the complete TV up to the panel separating the t-con board from the top lcd boards which are tied by 2 ribbon cables and tried this: http://www.jkturner.net/samsung/index.html since the symptoms are similar ) and assembled it back!! . Since the procedure did not solve the issue, the t-con board should be the culprit and the service engineer agreed with my finding, but said t-con board is not sold separately, so I would have to change the panel!
This is not true, I could actually see the same t-con board part numbers in shopjimmy.com, ebay.com and hdtvpartstores.com from AUO for AUO panels (yes, my TV panel was made in Taiwan by AU Optronics)
"What warranty would you provide on the changed part?" was my next question.
"One month Sir" was the service technician's reply!

So if Samsung Customer care is listening, here is my request:
(1) Please get a tcon board and replace it, so that I save some money! Samsung will make more money since you will have a "delighted" customer who will spread the word about excellent Samsung service!
(2) If #1 is not possible, provide a ONE YEAR WARRANTY for the CHANGED PART only.

I am being reasonable here, I am not asking for one year warranty for the complete TV, but only for the changed part. DO realize that I cannot buy a new TV every two years and can neither change panels every one month!

I hope somebody from Samsung would contact me soon with a valid proposal.

Regards
Sumit
Bangalore