The following procedure was written by Curt Palme.
I’ve been asked to write up a quick procedure on how to change a tube in an
NEC PG projector. Removal of tubes in the NEC XG Series is somewhat similar,
this can be used as a guide for those as well.
-flat blade screwdriver
-flat blade thin (jeweler’s) style screwdriver
While it’s possible, I do not recommend changing the tubes on any NEC set
while it’s on the ceiling. The glass on the necks of the NEC tubes is somewhat
thinner than the Barcos and Marquees, and it’s relatively easy to snap the neck
of an NEC tube if you bash it as you install or remove the tube. Do this with
the set floor mounted on a table.
Step 1: Flip up the top cover
Step 2: Remove the two Philips screws on each side of the set that hold the
front lens cover in place
Step 3: Remove the 6 Philips screws across the top metal plate that hold the
top of the tubes in place
Step 4: Loosen (these screws do not come out all the way) the two screws that
hold the deflection board in place.