$1800? Whoa!
I bet this is one time you're glad to have the extended warranty! I never buy those things myself. guess I've been fortunate. My near never used 61 inch Sony still plays well... but it's old school. 3 9 inch TVs are inside of it... or so the tech said.
The only thing I've had crap out on me since 2K were the Dell PCs I've had, a sony VCR/DVD player, and a chip went out in my 8 yr old Sony es receiver and cost me $125. hearing it after the fix, I was happy to have paid it as it was getting a little fuzzy sounding.... that all changed with the new chip... it sounds as good as new now.
Very good luck with your repair/replacement.