Extremely hot (cont.): Fixes We continue to note user reports that the Apple TV is extremely hot to the touch -- not surprising since the top of the device's case actually acts as a heatsink. Some users have found success with the following remedies:
Manually put in standby mode It appears that putting the Apple TV in standby mode manually -- achieved by pressing the center button for 6 seconds -- rather than allowing the unit to idle while not in use can result in reduction of overall surface temperature. You can tell that the unit has entered standby mode when the status indicator light turns off.
Stream don't sync Though not an ideal solution some excess heat that can be avoided by streaming media rather than synchronizing data. The Apple TV's spinning hard drive (required for playing back synchronized media stored on the unit) can create additional heat.
Use component cables instead of HDMI In some cases, using component cables rather than HDMI cables can reduce overall surface temperature.