60" Plasma tv (Green Acres area)

60" plasma tv model 60PS11
Unit powers on, sound works, remote works (most of the time). Unit will not display an image. Screen powers on and then falls back to a default grey screen state, likely the y-sustain board has failed.
External condition is perfect, no damage no cracks.
This unit is HEAVY, bring two people. The 20lb pedastal base has been removed from the 50-60lb screen, but I cant get it down the stairs from here.