After slaughtering the Van Graffs and losing the one from the Lucky 38 safe, the dead bodies of the bright brotherhood followers remain my last chance of finding a plasma defender to complete my energy weapons collection. If anyone can list their body locations it would be appreciated. Thanks in advance.

Repcon test site.. All over the place there....

Their is also one in the coyote den.

One in Primm pass, near the blind deathclaw; one on the top of the hills across the railway just west of there too, just a ways west of the Emergency Service Railyard (tough to find, kinda wedged in some rock clumps up there). Also one laying dead on the west side of the road just a ways south of Ranger Station Charlie, near where the raider gang hangs out (across from the big billboard). Also, they can be found in most of the caves in that area, as well. They are really good at dying. Good thing nobody ever loots them before you come along.

There's one under a bridge on the road from Jean Sky Diving to Sloan.
It's close to where a pair of Powder Gangers hang around a train wagon.

I found one the other day near Wolfhorn Ranch, to the north, on the other side of the overpass, laying next to a billboard.

There is also always a Plasma Defender in the Average locked floor safe of the Lucky 38 Cocktail Lounge.

i once saw a guy on the forum who killed everything in the game and couldn't repair anything