[cctalk] Planar ELT320 Schematics?

Darn - my beloved Planar ELT320 terminal has died. I was just sitting there using it and suddenly the screen went blank. The keyboard still works and the power LED lights, so not a simply power supply failure. Does anybody have a schematic or service manual for these guys? It's one of my favorite terminals - not only does it have a beautiful orange/amber EL display, but it's also way smaller and lighter than any VTxxx terminal of the era. Thanks Bob