Mark Furneaux | 1953 IBM Model A Electric Typewriter Repair Part 1 @TheUbuntuGuy | Uploaded May 2018 | Updated October 2024, 2 hours ago.
In this video I go over the device and theory of operation, and fix the power switch, key lockout mechanism, and single character carriage advance/backspace.

Timestamps:
3:52 - recap of unfilmed work
6:18 - removing cover
11:44 - underside
12:33 - key lockout mechanism problem intro
15:58 - theory of power transfer
21:25 - shift lock
22:47 - tab feature
25:27 - spacebar problem intro
28:17 - carriage return problem intro
29:28 - carriage tour
33:08 - disassembling power switch
35:29 - cleaning power switch
37:42 - fixing key lockout mechanism
38:12 - fixing spacebar problem
43:15 - first power up after fixing spacebar and demo
47:28 - reinstalling power switch and second power up

I have a second channel:
youtube.com/channel/UCN3Dgu6CVBcecDkc5DmIIqw