This is my final desperate source for help with my TV before I trash it. In the middle of watching a show the TV suddenly rebooted. After a moment the big Sony logo showed up on the screen before fading to black, and then nothing. It doesn't progress past that.
I've tried leaving it unplugged, I've tried leaving it plugged in (thinking there might be some update happening), and I've tried to do a factory reset by holding down the power and Vol - buttons when plugging in the tv (although there is no info I can find only specifically about the XBR-65X850C on sony's site for doing a factory reset, it seems like this is the way to do it for most Sony Bravias).
Trying to do the factory reset seems to do nothing different than just plugging in tv like normal: TV turns out, sony logo shows up, sony logo fades out, tv goes black and that's it.
So frustrating.
Anyone with some miracle advice?
i know you said you've tried the factory reset but double check you've followed the instructions here
it may need two people to do this so you can hold the buttons whilst someone else plugs it back in
also could try using a USB stick to manually update it with the firmware
here