In the upright position any jolt is going to flex the glass panels. Flat you worry about the support of the panel and if it flexes.
Sorry, that's all I got.
I just bought a plasma tv last weekend. I only have a small car, and I didn't want to pay for shipping. The store people told me that when you turn it on its back, the gases inside turn to liquid, which is fine, but you have to wait 24 hours for it to turn back into a gas.
As an engineer, it made me curious, so I did a little research. According to Wiki, the gases used inside it are noble gasses, all of which won't turn to liquid at room temperature. Xenon's critical point (which is the highest) is at about 60 deg F and 910 psi (atmospheric pressure is 14.7 psi). So I don't see any way that it turns to liquid.
So to my question- Scientifically why is it bad for a plasma to not be upright? And why is 24 hours the magic number for it to return to normal?
P.s. I did transport it on its back and waited the 24 hours. Nothing went wrong, picture is great - I love it.