Ian McLaughlin <ian at platinum.net> writes:
On Oct 4, 2013, at 10:56 AM, Cory Smelosky <b4 at gewt.net> wrote:
=20
Yeah. I know they're in the kV range. I'd appropriate discharge the =
CRT itself...but I lack the appropriate HV grounding wires.
=20
A flat-blade screwdriver and an alligator clip lead. Clip the lead to =
the shaft of the screwdriver and to the metal chassis of the monitor. =
Work the flat blade under the rubber cup where the anode wire attaches =
to the CRT. Be prepared for a loud POP and a flash.
CRT is now discharged.
If the loud pop scares you, then you can build a resistor into the =
grounding lead. I built one of these many many years ago, and it lives =
in my toolbox for just this event.
Please note that a discharged CRT can build up a static charge again =
just by sitting on a shelf. Always re-discharge the tube when coming =
back to a tube you've left alone for a while.
Also, Brian's advice about the hand in the pocket is important. Current =
is looking for ground. If your other hand is holding the chassis, then =
the shortest path to ground is across your heart. Not good. =46rom =
your hand down your leg to ground, while not good, is at least not =
across your heart.
It was Dave's advice but I would have stated it if he had not. In college,
a friend and I used to repair TV sets we found placed out for junk colection
and then, we'd sell them for beer money! ;) I took my fair share of shocks.
One discharge was through my thumb and there's still a tell-tale mark there.
--
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Well I speak to machines with the voice of humanity.
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