TE,
It is odd. To add further to the mystery, it was working fine since 7/12 (tag on back with installation company name), a date the installer sold it to us. I suspect when I defaulted the phone, it changed some setting saying it's a 5320.
I haven't seen this sort of problem before, but with my experience limited to one company, that's not surprising.
I don't think it's refurbished, or at least I don't think it was sold to me as refurbished. If the installation company won't do anything with it, might be kind of fun to take a 5340 with a bad LCD and see if the LCD from the "5320" (working like a 5340) would work in the 5340 with a bad LCD. I winder if real 5320 just don't power the LCD's and the LCD's are the same as in a 5340. Who knows!
Take care,
Jeff