CRT is often called a STORAGE tube for it's ability to hold a STATIC
ELECTRIC CHARGE.
The VOLTAGE of the static charge is measured in the THOUSANDS of volts,
as opposed to the 120 volts at your wall outlet, a TYPICAL color CRT
will store 26,000 volts, virtually forever, until broken or dissipated
(correctly discharged).
TURN OFF THE MONITOR, DO *N*O*T* unplug it until AFTER discharging it...
> Essentially, you use _ONE_ hand (to decrease the chance of electrical
> current passing directly through your heart) and you use an insulated
> screwdriver or discharge tool. You run a wire from a grounded point on
> the monitor chassis to the connection under the anode cap on the CRT.
(I use a very long FLAT TIP screwdriver with a WOODEN or RUBBER handle,
keeping my hand on the back end of the grip at ALL times, (Not to be
funny but you MUST wear shoes and clothing that prevents your body from
touching ANYTHING while you work on a monitor) then slide the tip under
the rubber cap while holding the SHAFT of the screwdriver against the
metal frame of the monitor. (There MUST be GROUNDED BARE METAL TOUCHING
THE SCREWDRIVER WHILE IT TOUCHES THE ANODE!)
The Anode is the metal contact under the rubber cap at the end of a
thick RED or ORANGE wire that comes from the power supply to the top or
side of the CRT.
NEVER TOUCH THIS WIRE, OR the ANODE when power is ON, or if the CRT has
NOT been discharged! ESPECIALLY NOT with a ANYTHING METAL.
EXTREMEMLY important to note is that the unit MUST be PLUGGED IN and
TURNED OFF for this to work.
Plugged-in so that the chassis is GROUNDED at ALL TIMES during
discharge, otherwise, there is NO WHERE for the static charge to GO.
AFTER DISCHARGING THE TUBE YOU *M*U*S*T* UNPLUG THE POWER CORD.
NOW:
> After that, you remove the anode cap and set up an ongoing connection
> to ground between the CRT connection and the ground, to keep the CRT
> from recharging, which it can and does do, even without any power
> attached.
This will ONLY happen if there is current flowing in the monitor power
supply.
AFTER correctly discharging the CRT, UNPLUG the POWER CORD from the
WALL, and the ANODE will not recharge.
. Sorry, I don't remember the link.
