Originally Posted by jsulmeyer
Just when I decided to keep my 46HX909, the issue of sudden reboots and on-screen menu lagging has re-emerged. Specifically, when I try to access and navigate the on-screen menus, they take forever to respond, then nothing happens, even though I'm pushing the arrow buttons and the green light on the TV is blinking. Then, without warning, even after I've stopped pushing the buttons on the remote, the menus zip across the screen.
This behavior, like the sudden reboots, occurred when I first got the TV a couple of months ago, and then stopped happening. I figured a firmware update fixed the issue. Still, to be safe, I had an authorized Sony technician take a look at the TV. They, in turn, contacted Sony, who recommended replacing the main board and the remote receiver board. Since the problem had subsided, I elected, at that time, to hold off on the repairs.
It looks like you got your set replaced, but I did just discover a related issue with my 52HX909 and I wanted to note it in here in case it will help anybody.
The past couple of weeks my TV had been acting a little funny. The volume control on the TV seemed to be unresponsive, when raising or lowering the volume I could only get it to raise or lower by repeatedly pressing the control, holding it would no longer work. This meant the remote control became essentially useless for raising and lowering the volume.
My receiver is controlled using HDMI-CEC, and it had been working fine for months-- but I did have some weird behavior before that I was able to fix by pulling the power/HDMI on the receiver, then plugging it all back in.
But the volume control was still unresponsive after the receiver had been unplugged-- and I realized there might be an issue with my remote control hardware, or ever worse, an issue with the TV like above.
Luckily, I found what was really causing the issue. Apparently when your remote control batteries are low, the volume control is the first thing that misbehaves.
I replaced my batteries with a freshly charged pair and everything returned to normal.
Just a heads up for anybody still monitoring this thread. If your volume controls start acting strange, it's time to change the batteries in your remote.