For reasons that you can guess, the tcon has become the answer to almost all posts about what board to replace when a LCD TV fails. This has resulted in 2 issues. 1, it doesn't fix most TVs. 2. The supply of boards dried up.

In the USA you have a few sources that you can try like samsungparts.com, shopjimmy.com and such but maybe, if you know it's that, just let Samsung fix it. They may have a network that can ship it via air from anywhere.