When I turn on my xbr65x900c it turns on and I can access everything, but after a few minutes it turns off and goes to the android logo like if I unplug the tv and replugged it. While in the short period where I can access the settings menu I've tried to factory reset it but when prompted if I would like to factory reset my tv, I press yes and nothing happens and I am still on the menu where it ask if I would like to factory reset my tv. After trying multiple times to factory reset my tv via system settings, I tried unplugging my tv and replugging it while holding the volume down + the power button until a green light appears, then I let go in which the tv boots up and and does not factory reset. I thought it was the remote so I took out the batteries and waited but the tv continue to reboot.
I have this same issue, did you ever figure out what it is? Is it the main power board?