Heathkit IO-102 Repair, Mods & Demo

After decades languishing in my basement, I rescucitate my IO-102 scope which no longer worked. How I troubleshot it, and made a couple of mods. Finally, I demo it using an IG-18 & ID-101, and then test its bandwidth response. ----- Added 27-Apr-2025: I've been asked to make available my IO-102-related docs. Happy to do so. The Heathkit manual is not included, as I used my original paper manual. Should you require one, I can strongly recommend manualman.com. (not a sponsor. Just happy customer for other Healthkits) Should at some point in the future these links break, kindly DM me. Here's the .pdf of the IO-102 Parts Substitution list I compiled during the restoration. (also shown in the video) Note that ntepartsdirect.com, the longstanding supplier of parts in the rightmost column, is sadly no longer around. NOS NTE parts may be available from other sources. Disclaimer: Compiled from various online parts databases, and ntepartsdirect. Not every part listed was actually tested on a IO-102. https://drive.google.com/file/d/1nMuGx58yzEVdQxEbiCiUJBRMxY5CCENX/view?usp=drive_link Here's an undated official Heathkit IO-102 modification: My IO-102 kit already had the listed parts, although I was unaware of this in 1972. Must have been for very early kit production. https://drive.google.com/file/d/1JqA8zzvwL7YOK3maK9BL0DEOA3gFONMC/view?usp=drive_link Here's an original Sylvania spec sheet for the 5DEP1 CRT. (All my 5DEP1s happen to be Hitachi) https://drive.google.com/file/d/1W0DWK0izX5WuE6oaSo8I1yf6UM2eKQ0d/view?usp=drive_link Enjoy. Feel free to comment or DM me. -----