Uploaded November 2025 | Updated September 2026, 2 weeks ago

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Instructions on how to use a TV-7 tube tester to test a tube for transconductance, shorts, and gas. Some helpful tips along the way.

TV-7 Tube Tester Calibration, Repair, and Service - a Practical Guide - Part 1
youtu.be/Ru-AR9HTqgc

TV-7 Tube Tester Calibration, Repair, and Service - a Practical Guide - Part 2
youtu.be/_3iDBtcK_hk

How to Fix a TV7 Tube Tester with Line Set Issues - CR101
youtu.be/Siy7O_jprOA

My Ebay Store to purchase TV-7 Calibration Tubes
ebay.com/str/blueglowelectronics

TV-7 Tube Data Sheets
frank.pocnet.net/instruments/Military_us/TV7/TV7.html

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Video Breakdown:

0:00:00 - Introduction
0:00:28 – A little about these TV7 units to be aware of
0:03:04 – Tube Data Booklet
0:06:26 – Orientation to the Tester
0:07:25 – Configuring Tube Settings (6L6)
0:12:06 – Testing a tube for Shorts
0:13:46 – Testing a tube for Mutual Conductance
0:14:37 – Testing a tube for Gas
0:16:28 – Testing a dual triode (6DJ8)
0:19:21 – Testing an 807 tube
0:20:28 – A few other Tips