Rejuvenating a Macintosh CRT with equipment from 1969

About this video

Can a tired, dim picture tube be brought back? Adrian tries rejuvenation on the CRT from a Macintosh Classic II, in part 4.5 of the Macintosh Repairathon series.

Good to know: The tube and flyback hold a high voltage charge after unplugging. A knocked or cracked tube can implode, so protect your eyes and never lift it by the neck. Mains voltage is inside the set as well.

Why watch it

Part 4.5 sits between parts four and five of the Repairathon, so start with the earlier parts for context. The maker says this is a first attempt at rejuvenating a tube, with 1969-era equipment.