Discharging a VT100 CRT

Wolfe, Julian ISC277 at CLCILLINOIS.EDU
Wed Nov 2 21:52:15 CST 2005


Okay, I'm going to try and take another crack at replacing the flyback
on my VT100. A few months ago I almost did, and chickened out.   I'm
very very afraid to do so, as the idea of trying to discharge the CRT
scares me very much.  The terminal has been off and disconnected from
power for at least 2-3 months now.

 

This is what I've learned so far from reading:

 

Put one hand in your back pocket.  Use an insulated screwdriver with
alligator clips on either end, one to the screwdriver blade, one to the
frame (VT100 service manual says the frame right above the CRT is where
you should ground to).  Place the screwdriver under the anode cap and
touch the metal connection underneath.  Wait till the crackling stops.
Remove the anode cap.

 

Can anyone reassure me that this is a semi-safe procedure?  Has anyone
done this sort of thing before?

 

Thanks

Julian




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