[HECnet] VT420 with a "worn out" display

[Cory Smelosky]

yOn Fri, 4 Oct 2013, Dave McGuire wrote:

On 10/04/2013 01:47 PM, Brian Schenkenberger, VAXman- wrote:
Does the VT320 have a similar pot for width and height?   The width and
height are off on mine.

Inside on the board.   Google for the VT320 service guide and it should tell
you the alignment procedure.

Cory, be very careful in there.   You are technically astute, and I
know you have a serious knack for this stuff, but there are voltages on
and around that board that are unconditionally lethal.


Yeah.   I know they're in the kV range. I'd appropriate discharge the CRT itself...but I lack the appropriate HV grounding wires.

A finger-to-finger shock will hurt, but a hand-to-hand shock can kill
you.   Keep one hand in your pocket or behind your back when the other
hand is inside that chassis.   Also, never do this kind of work when
you're the only person in the building.

Very rarely do I even work around low-voltage stuff with two hands.   I'll need the appropriate adjustment tool first.   I'm not too fond of making my own around HV gear.


                      -Dave



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Cory Smelosky
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