My plasma has no fans and a perforated back on the top and bottom. It gets warm, but not hot.
AS far as burn in, we would have to separete burn in from after image retwntion--two different things. So if the bars remain lightly in the background after very prolonged 4:3 use and then disappear after the set is off and then used for other purposes that would be after image retention.
if on the other hand it was true burn in, you use the reverso inside out function on a 4:3 screen to even the phosphor wear and elimanate theuneveness; the picture setting would then be adjusted to DVE or AAVIA or calibration standards.
AS far as burn in, we would have to separete burn in from after image retwntion--two different things. So if the bars remain lightly in the background after very prolonged 4:3 use and then disappear after the set is off and then used for other purposes that would be after image retention.
if on the other hand it was true burn in, you use the reverso inside out function on a 4:3 screen to even the phosphor wear and elimanate theuneveness; the picture setting would then be adjusted to DVE or AAVIA or calibration standards.