Tektronix 2445 oscilloscope repair

The Tektronix 2445 is a cool old 150mhz 4 channel oscilloscope made in 1982. This particular specimen is in mint condition but isn't working right, so let's attempt a repair! -- Links Tektronix 2445 Service manual: Adrian's Digital Basement Merch store: Adrian's Digital Basement ][ (Second Channel) Support the channel on Patreon: -- Tools Deoxit D5: O-Ring Pick Set: (I use these to lift chips off boards) Elenco Electronics LP-560 Logic Probe: Hakko FR301 Desoldering Iron: Rigol DS1054Z Four Channel Oscilloscope: Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier: TL866II Plus Chip Tester and EPROM programmer: (The MiniPro) TS100 Soldering Iron: EEVBlog 121GW Multimeter: DSLogic Basic Logic Analyzer: Magnetic Screw Holder: Universal ZIP sockets: (clones, used on my ZIF-64 test machine) RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI) Plato (Clone) Side Cutters: (order five) Heat Sinks: Little squeezy bottles: (available elsewhere too) --- Links My GitHub repository: Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group --- Instructional videos My video on damage-free chip removal: --- Music Intro music and other tracks by: Nathan Divino @itsnathandivino