Hitachi 53uwx10b
I believe you can order the convergence board replacement for $299 from Part Store, here's a link to it for my 61" Hitachi, which should use the same board:
http://www.partstore.com/Part/Hitachi+Ltd/Hitachi/61SWX12B/Hitachi+Ltd/Hitachi/CS00452R/New.aspx
They offer a 30 day hassle-free return policy, so if for some reason it wouldn't work for you or isn't the right part, all you'd be out is the return shipping, as the initial shipping is free.
I'm in the process of having my board fixed w/the IC/resistor kit and hopefully I don't need a whole new board. We'll see, but give this a shot, I don't see how you can lose... -TD
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