Here are some links to repair tips and reference material.

vintageTEK Museum Product Repair

150-0009-00 Neon Lamp Burn-In

1950 Tektronix Color Codes

468 Mostek MKB36000 ROM Repairs

7854 Mostek MKB36000 ROM Repairs

Circuit Descriptions with Chuck Miller

CRT Database

Dallas DS1287 Dead Battery Repair

Keytronic Capactive Keyboard Repair

Repairing Plastic Knobs and Gears

Tektronix Vacuum Tubes

Troubleshooting Your Oscilloscope

Primer of Waveforms and their Oscilloscope Display 1960