Tektronix 576 Curve Tracer - Part 2

I always wanted a decent curve tracer to check up on replacement parts with a bit more scrutiny. But the price was alwas a limiting factor. And the Tektronix model here is also quite heavy, so shipping usually almost doubles that. By the end of 2023, an online friend said he had to sell off his, due to lack of time, space and money. Add that to another online contact making a journey by car earlier in 2024, and I just couldn't pass up the chance! So, here we are: part two of three of the in-depth restoration of this classic device!

NOTE: The cleanup process was even lengthier than shown... I only left "one item per type" in the video. e.g. from the 5 waver switches, only the most elaborate one is shown in detail...

0:00 Intro / Resistor?! / Scrubbing! 2:30 Paint Problem / Graticule Illumination Screws / Custom Paint! 5:07 Recapping / Transistor Cleanup 7:01 Power Switch / Waver Switch 9:35 "Cam Drum" Switches 12:00 Push Buttons 15:22 Mini Potentiometers 17:43 TTL IC Problem / Transistor Repair 19:30 CRT Gain Potentiometers 21:10 CRT Deflection Standoffs / Resoldering 22:05 Variac / Compensation Capacitors 24:08 Display Readout! 27:03 Assembly: Collector Supply! 29:58 Collector Supply Circuit Overview 31:50 Backbone Beginning! / Mains Input Lines 33:25 DC Filter Caps / Clearence Problem / Wire Loom Start! 35:10 Thermal Cutoff / Transformer Taps / Power Resistors 35:57 Rectifier Board / Regulator Board / Summary / Outtake

General Information: https://w140.com/tekwiki/wiki/576

Blog post mentioning the "TTL Issue": https://jacmusic.com/Tube-testers/TEK-576/Tek-576-2-Restoration.html

Music (in order)

My Train's A Comin' - Unicorn Heads Town of 24 Bars - Unicorn Heads First Aid - Letter Box Dusty Fingers - DJ Williams Frame of Mine - Freedom Trail Studio Oceans - Text Me Records / Bobby Renz No Good Right - Freedom Trail Studio Sunset Trails - DJ Williams First Aid - Letter Box

No Good Right - Freedom Trail Studio (YouTube Audio Library)

You can support me on Ko-Fi: https://ko-fi.com/atkelar and also on Patreon: https://www.patreon.com/Atkelar and now also here by using the "Super Thanks" feature!

Thanks to everybody who signed up already! ... https://www.youtube.com/watch?v=mdzimkAfwfc