Thoughts on Plasma, LCD, DLP and which way to go

I've seem burn-in in residential sets from extended use in 4:3 aspect (albeit, the burn-in was relatively minor). I think it can be an issue in the long run if one plans to keep the set for a very long time.

The altitude issue is one of noise. At higher altitude, the thinner air makes it harder to cool the set so the fan has to run at a higher speed -- hence more noise. This is often the case with RPTVs because they require a fan to cool the bulb. Plasma makers are getting much better at handling the noise issue. I saw a JVC plasma with a completely perforated back that has no cooling fan at all.

I like plasma sets, and in particular, if one requires a thin set to hang on the wall and a large screen size, there really are not many good alternatives. However, some of the LCOS/SXRD/DILA sets now coming on the market are pretty nice looking, provided one does not need a thin set.

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.

The other interesting thought I have is; " Why would anyone buy a plasma and watch 4;3 stuff on it? At least I might consider a zoom mode to maintain the aspect ratio yet minimize the bar area; it is after all a widescreen display- however, I have no doubt that you could get burn in if left in 4:3 viewing mode for days and days on end.

Thanks for the info about altitude & plasma sets - the noise problem is what I was thinking about - and using the set at high altitude, not how it reacts to being shipped by jet. :-) I live in Colorado so the altitude question is important to me. It is good to know that the plasma screen makers are making improvements. Here is a link to some info about high altitude and plasma screens:
http://www.plasmatvbuyingguide.com/plasmatv/plasmatv-altitude.html Note that this was written in mid-2004.

Holly

With modern plasma sets, I don't think you would have problems with high altitude/noise. Just one proviso, be sure to provide plenty of ventilation space around the set. The people that seem to have problems with premature death of their sets, that I've seen, have compromised cooling of their sets -- placed set in an a cabinet, built into a wall without forced air ventilation, installed a curtain to hide the set that covered the sides even when open.