On 04/01/04 03:11, QQQ said...
I have installed probably 100+ plasmas over the
past 5 years on metal studs using nothing but
normal screws. Only 3 have fallen down and all
3 happened after the warranty period resulting
in a new sale.
ONLY THREE!
Me thinks you are playing with a major business closing lawsuit should one of those falldowns occur when a toddler is underneath the TV. Are you in an earthquake zone? If so please give us a list of any commercial establishments you may have put these in so we may avoid them like the plague.
Overbuilding is my solution. Be a drywall guy or hire one. Tear out the section of wall and frame in wood... charge extra. At the very least do the three stud plywood thing (using 13 ply marine grade if going for 3/4). You can use 1 1/8 inch and rerock the existing 1/2 inch wall with 5/8 rock if the TV is smaller than three studs and you want the wall to appear flush.
I too have installed 100+ plasmas but NONE of mine have ever fallen down because they are all over-engineered (I am presently pounding on my forehead saying "knock on wood"). We just recently walked away from a job because the client wouldn't go for our solution... no skin off my back, let someone else get the lawsuit.
All TVs we hang have to pass the fat-boy test. I (fat-boy at 200+ lbs) have to hang and do chin ups on the mount before a TV goes on... especially commercial tube TVs. We WON'T install one on a shelf mount... has to be a yoke as I've replaced a shelf mounted Tv in a Bar and Grill that almost killed a waitress when it fell off. I'd say this is one time to cover all your bases and if you need sales ammo... just take QQQ,s quote along with you and ask your customer if he/she would like to be one of the three?(sparing his name of course)