An Apollo Lunar Module hand controller is back on the electronics bench. In a video published on 8 October 2026, CuriousMarc’s team attempts to diagnose and repair faults in its rotational controller—the part astronauts used to command the lander’s attitude.
The interesting part is the repair question, not just the Apollo provenance. The creator says the controller has several faults and suggests that one particularly serious problem may explain why NASA disposed of it. That remains an interpretation, not a confirmed account of NASA’s decision. The footage shows the controller opened on a test bench beside diagnostic instruments while the team works through the hardware.
For anyone who restores vintage electronics, this is a rare look at fault-finding in a machine where mechanical feel, electrical signals and historical context all matter. It is the third instalment in CuriousMarc’s Apollo hand-controller series; the video description also links to X-ray models of the translation and rotation controllers for a closer look at their construction.
