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Old 05-13-2018, 09:01 AM
dtvmcdonald's Avatar
dtvmcdonald dtvmcdonald is offline
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Join Date: Nov 2012
Posts: 1,268
Last night I got a raster. Easy recap job. I got the HV box recapped by undoing only 4
wires, the B+, B- (it has a -100v or so B- supply), ground, and HV. The filaments
can remain connected. I did this by unscrewing the bakelite (?) plate and the
box itself. Then you can lift the box and unscrew the aluminum plate on the bottom.
Then the plate comes off, and you wiggle the bakelite loose and remove the box.
Its then easy to service. Getting two screws back in the aluminum plate is finicky.
The HV wire was toast so I replaced it.

I got 4.7kV HV. Next job is getting reliable contact from the pushbuttons. The
buttons often fly off. What do you do about the looseness problem ... I don't want
to use strong glue.
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