TV-7 Tube Tester Calibration, Repair, and Service - a Practical Guide - Part 1

If you need calibration tubes, I now sell them, follow this link: https://www.ebay.com/str/blueglowelec... If this video helped you, buying these from us is a great way to say thank you. BG143 - Full in-depth walk through of how to calibrate a TV-7 Tube Tester. This applies to the TV-7D/U, TV-7C/U, TV-7B/U, TV-7A/U, etc. We also show how to replace the meter and bias potentiometer if needed. Also shown is how to replace the power cord with a modern 3 prong cord as well as a little history on these units. A link to the instructions can be found here: https://blueglow.net/tv-7/