EMI -- Now I need a tin-foil hat 24x7
The F8500 makes for some serious EMI to other components.
I have an old Meridian 561 digital preamplifier / processor that I still use for home theater. It sits with it's top about 2 inches below the bottom right side of my 64F8500, wall-mounted on an articulating arm and about a foot out from the wall.
When I installed the 64F8500, we noticed that the Meridian began behaving strangely when the TV was on. It would turn itself on and off, change modes and presets, and generally act strange every hour or two. It also would often not respond to the remote control, and sometime would not even respond to the front panel buttons (e.g. have to pull the plug to turn it off). It (mostly) worked fine with the F8500 turned off.
I thought that this was infrared from the picture messing with the remote control sensor of the Meridian. We had similar, less severe, problems back in 2003 when I installed my first plasma (a 42" Panasonic) with the identical setup. Somewhere on this forum I learned of a small stick-on IR filter, and attaching that over the Meridian's remote control sensor window solved the problem, for the 42" Panasonic and the 50" Kuro that came along a few years later.
I reasoned that the much larger and brighter screen put out more infrared, so I needed to add another layer of filtering. Adding another layer of filtering did not help, though.
The breakthrough came when, one day, I noticed that with the F8500 on, the Meridian was not responding to the front panel buttons when I covered the infrared sensor window with my thumb. Very suspicious...
On a hunch, I wrapped a sheet of aluminum foil around the top and sides of the Meridian.
Problem completely solved, almost.
The poor Meridian 561 had gotten so scrambled by the F8500 that it would (for example) no longer allow access to the center speaker adjustments. That was fixed by re-uploading it's saved firmware and settings from a PC.
Now, it's fine wearing it's tin foil hat all the time. But I was a bit surprised that the F8500 puts out that much EMI.