So i came up on a home theatre projector system. It is a Seleco SVD 500 Plus. I have the projector, power cord, 2 remotes (one says RC 3000 & RC 3100) & mounting brackets. It does power on, but can not get any thing to come from the 3 lighting tubes( no picture), i know its not actually connected to anything to bring picture, but should it bring up a picture at power on? what else do i need? & what is the value of this? it appears to be in great condition, very large, very heavy