Part of the answer depends on the exact monitor/chassis/etc... that you have.
You would probably be best off to go to
Bob Robert's Website, and read about how to properly discharge a monitor for removal.
There is good information there about discharging a monitor, and also about avoiding getting bitten by a G07 chassis.
There is one capacitor on the G07 chassis that will stay charged when you discharge the monitor anode, if one of the fuses is blown.
You have to discharge that capacitor as well, before removing the monitor chassis, if you don't want to drop it suddenly when it bites you.
The one other thing to be concerned about is proper handling of the picture tube itself.
You don't want to crack it, and have it implode on you.
The power supplies, and wiring associated with them (runs to the PCB board, controls, isolation transformers, etc...) themselves are relatively safe, provided they are unplugged from the wall.