Modern TVs can get quite hot. Use this TV in a well-ventilated area. Before taking the unit in for service, change the batteries in your remote and follow these easy troubleshooting steps.
Strange colours may simply be a case of the room you're watching the Aquos in being too bright. If colours are appearing misaligned though, you may have to make some settings changes. Adjust the picture tone and check the input setting--make sure the signal you're putting into the TV is OK. Make sure the cable connections are all tight.
TV Suddenly Turns Off
This can be quite disconcerting, but usually it's just a case of the sleep timer being inadvertently set. A more serious reason would be because the internal temperature of the unit got too hot and the device shut down. Make sure there's plenty of breathing space around the TV. Let the TV cool down and try again. There's a "Power Control" setting in the menu that is disabled at the factory, but when set, it will shut the TV down if there's no signal. Check that's not the problem.
If there's no picture at all, check all the connections. Make sure that the source you are using--the cable box, for example--is on. Depress the "Input" button repeatedly to see if a picture comes up. Make sure that the "Audio Only" setting isn't selected in the menu. If you've changed the wiring, try to retrace your steps. If you're using a new source, check it's compatible.
Check to see that the Mute setting is off. Press "Mute" on the remote. Try raising the volume, maybe the volume has been decreased too much. There's a setting in the menu called "Output Select" which controls how the sound is routed. If it's switched to "Variable," the TV's internal speakers won't work. Play around with this setting and see if that's the problem.
Picture Cut Off
The remote control allows you to change zoom settings, Make sure the image position is OK and that the picture size is correct. There's a setting in the menu for position. It will allow you to centre the image left or right--it's called "H-Pos," and to move it up or down, that's called "V-Pos."
Playing with the menu settings can be a can of worms. The menu has a "Setup" section, press the up and down buttons until you see "Reset," select "Yes" and then confirm by pressing "Yes" again, and the whole system will reset to the factory values.