lostinlodos wrote:
Plasma displays always have a heavy metal backing (magnesium, aluminium, nickel, manganese, etc). But do NOT try to remove it. You absolutely do not EVER want to risk cracking a plasma screen. They're chockablock full of nasty gases, all dangerous and some very quickly deadly like hydrogen floride.
If it's in cracked you can sell the screen online from ebay to dedicated buyers (ggl plasma display used buyer).
If it's damaged most ferromagnetic scrap buyers will take them as shred.
neon xenon and helium are toxic? ;) Hydrogen fluoride in a plasma screen wouldn't work, as it would just eat the glass.