TV-2B/U Military Tube Tester Restoration - Part 1

Published at : 23 Dec 2025

We attempt to revive a TV-2B\U military electron tube tester, which is mighty good but mighty complicated.

Stuff that supports the channel:
- Support us on Patreon: https://www.patreon.com/curiousmarc
- Amazon links for the tools I use in the lab: https://www.curiousmarc.com/amazon-links
- Channel merch on Fourthwall: https://curiousmarc-shop.fourthwall.com
- Legacy channel merch on Teespring (I don't have everything transferred to Fourthwall yet): https://teespring.com/stores/curiousmarcs-store

"Elevator Music" Credit: Crinoline Dreams by Kevin MacLeod

Our lovely sponsors
- PCBWay: fast turn PCBs, https://www.pcbway.com
- Electro-Rent: https://www.electrorent.com
- Keysight: test instruments: https://www.keysight.com
- Samtec: connectors: https://www.samtec.com
- R&D Microwaves: https://rdmicrowaves.com

Get more technical info on the companion site: https://www.curiousmarc.com
Contact info: https://www.youtube.com/curiousmarc/about

00:00 The TV-2B/U tube tester
02:08 Grand Opening
04:05 Initial Inspection
04:52 Resistors and Caps Check
07:11 First fault discovered
08:17 Wafer Switch Removal and Repair
13:40 HV cables, front panel clean and other repairs
18:49 First turn on - no dice
21:13 Power debug and repair
23:11 It lives!
25:27 First tube test