Yeah the danger of death fear put me off opening mine up too. Discharging the CRT sounded equally dangerous. However, the Classic II has a bleeder resistor which is designed to remove any charge once the Mac is switched off. As a precaution against the resistor being faulty I left mine unplugged for a week and then opened it up. To remove the logic board I didn't have to go anywhere near the CRT (just disconnect the power, floppy and hd cables) so it was a safe operation.