EEK! Just one more thing! 8-o
We all forgot to mention electrostatic discharge protection/damage. The chassis really should be grounded and a grounding wrist strap attached to the same ground point should be seen in that video. Instructions for touching the case (grounded by the power cord) of the first Signmaker machine before touching anything else and maintaining contact with it while changing bare PCB Font cartridges (only ROMs onboard the cartridges and the support edge under the cover port on the console was unpainted bare metal IIRC) was very highly stressed. I'm not sure if maintaining contact with the ungrounded Chassis of the SE whilst fiddling with the mobo/Analog Board like that is enough protection, but I've gone by that "maintain contact with the bare metal chassis" admonition from those 8bit days on to the present.
We all forgot to mention electrostatic discharge protection/damage. The chassis really should be grounded and a grounding wrist strap attached to the same ground point should be seen in that video. Instructions for touching the case (grounded by the power cord) of the first Signmaker machine before touching anything else and maintaining contact with it while changing bare PCB Font cartridges (only ROMs onboard the cartridges and the support edge under the cover port on the console was unpainted bare metal IIRC) was very highly stressed. I'm not sure if maintaining contact with the ungrounded Chassis of the SE whilst fiddling with the mobo/Analog Board like that is enough protection, but I've gone by that "maintain contact with the bare metal chassis" admonition from those 8bit days on to the present.