Not sure what it says about me, but this is one of the scariest tasks I've ever done on the job. It's frighteningly simple, but I'd hate to relay in a post form, and I'm not sure I'd actually follow my own advice at this point. :) There are specific tools and procedures that can be researched and used to do it safely, it is not hard to do, and it's over in less than a second. Also, see rule #1.
This is from section 3.5 in the manual linked above, kids, don't try this at home, or at work: I forgot about the imploding part!
CRT Safety Rules
1. Do not work on a monitor alone.
In case of accident, it could save your life to have
someone else nearby. Apple recommends that your staff
be trained in Cardio-Pulmonary Resuscitation (CPR).
2. Remove rings, watches, bracelets, hanging necklaces, and
other jewelry before performing repairs on a monitor.
Metal jewelry is an excellent conductor of electricity.
Removing jewelry will reduce the possibility of electric
shock .
3. Never use a grounding wriststrap or heelstrap or work on
a grounded workbench mat when discharging a monitor or
when performing live adjustments.
Grounding wriststraps, heelstraps, and mats are used to
protect sensitive components from the damaging effects
of electrostatic discharge from your own body or
clothing. Even though they contain a one-megohm
resistor and are designed to conduct only small
electrical charges, we recommend that they be used only
when working on "dead" (uncharged) equipment.
4. Wear safety goggles when working with a CRT.
The CRT contains a high vacuum. If cracked or broken,
it can implode (collapse into itself, then explode). To
protect your eyes from serious injury, always wear
safety goggles when working on or near a CRT, and be
careful of other people in the area.
5. Before working inside a monitor, turn off the power and
disconnect the AC power cord.
Certain parts of a monitor chassis are hot (electrified)
when the monitor is under power. Except when you must
have the power on (for example, when making live
adjustments}, never work on a plugged-in monitor--even
if you have the power turned off .
6 . Keep one hand in your pocket or behind your back when
working on a live monitor.
This practice reduces the risk of current passing
through your heart, should you accidentally contact high
voltage .
Lisa 2 Video Take-Apart rev. Jun 87 page 3.3
7. Always discharge the anode before touching anything
inside the monitor.
The anode of the CRT maintains a charge of about 15,000
volts DC {even when the power is off). Before touching
any internal components you must discharge this voltage.
The anode can regain some charge, even after it has been
discharged. If the service procedure takes more than 30
minutes, the anode should be discharged again.
8. Never touch the anode connector or the anode aperture.
Normally the anode aperture has a connector plugged into
it (Figure 1, #2). When a CRT is replaced, the anode
connector is removed, exposing the anode. The anode can
maintain a charge of several thousand volts (even after
the power is of f ) .
9. Do not pick up or handle a CRT by its neck.
To prevent an implosion, take every precaution against
breaking the tube. Be especially careful with the neck,
the area where the tube is the thinnest.