Lear Siegler ADM-31 Terminal - Repair & Restoration Pt.1

This video is the 1st part in a miniseries of Lear Siegler ADM-31 Terminal. This video attempts to cover removing, cleaning, and recapping the power supply, CRT driver board, basic troubleshooting, and reassembly. Chapters: 0:00 Introduction & Overview 5:12 Disassemble the clamshell case 8:44 Discuss CRT discharge and safety 17:17 Cleaning the case 18:18 Cleaning the CRT tube 18:54 Using a CRT tester to test the health of the CRT tube 32:34 CRT driver board de-soldering capacitors and review 38:25 PSU review before servicing 41:21 Capacitor kit ordering and checking values of original caps 44:45 Clean the main PCB and keyboard assembly 45:34 Fitting and soldering in the new capacitors 56:00 Checking the Motorola component 59:50 Review of work done so far and plugging in the terminal for the first time 1:01:17 Testing with the CRT 1:03:15 Shoutout to Retrocet with the ADM-5 for his help and photos 1:06:18 Testing with the CRT 1:09:41 Shoutout to RMC and Rob at Resurrection Retro 1:11:38 Reviewing pinout of connectors 1:13:42 Reviewing what the wave forms of the various signals should be to the CRT 1:15:01 Reviewing Oscilloscope wave forms 1:16:25 Showing the horrible noise from the CRT board and the flash on the CRT tube Constructive feedback is welcomed in the comments. Thank you for taking the time to view. Like what you see? Say thanks by buying me a drink! https://www.buymeacoffee.com/retrobri... Channels of interest:    / retrotechusa      / rmcretro      / @resurrectionretro      / @retrocet   Further reading related to the fault: https://forum.allaboutcircuits.com/th... Related articles: https://vt100.net/lsi/ http://www.decadecounter.com/vta/arti... https://usermanual.wiki/Document/Sams... https://manx-docs.org/search.php?cp=1... https://terminals-wiki.org/wiki/index... http://bitsavers.trailing-edge.com/pd... Tools: Soldering Iron: https://amzn.to/3rxK5eO Desoldering station: https://amzn.to/3i5XQy6 Capacitor tester: https://amzn.to/372aAQ8 ESD Brushes: https://amzn.to/3y57TZO Microscope: https://uk.banggood.com/MUSTOOL-G1200... Picks: https://amzn.to/2TBgMLP Sidecutters: https://amzn.to/2URHU9P Parts: Cleaning products and consumables: Flux https://amzn.to/3i0zypg Solder: https://uk.farnell.com/multicore-loct... IPA: https://amzn.to/3kXGHsq Cotton buds: https://amzn.to/3rEhSmr Heatsink paste: https://amzn.to/371VkCM