Standard CRT Warning
Any CRT (Cathode Ray Tube) monitor or television, of any kind, contains powerful capacitors that are most likely charged. Contact with a storage capacitor can kill you stone dead in an instant. Do not attempt to work on the guts of a CRT unless you are quite sure you know what you're doing. It is also advised that you follow a simple rule:
Keep one hand behind your back. Yes, literally. Tie it back there if need be. As long as you're only working on the monitor or TV with one hand, any discharged current will flow only through your hand. Not your heart. Current through your heart can be fatal. Current through your hand will, at worst, injure your hand. This is greatly preferable.
If you work with care and patience, you can undertake this kind of repair safely.
Further information on CRT safety can be found below, and all over the web: