Question about Sony SU-WL850

Hi raffaele.dimonte,

yes, it fits with your XR77A80J.

Sony Support EN

Hello, yes, that works. I used it to hang the exact same TV. You have to think carefully about the cable routing before you install it, because the TV is so big, the paths can be very long. I have flush-mounted the cables and they come out just a little below the top crossbar. This means I can't push the TV 100% all the way to the wall - but the 3-4 cm won't make any difference. Good luck!