Tektronix 2230 Oscilloscope Repair: Part 1

Another eBay find - a Tektronix 2230 oscilloscope with a strange fault symptom! Also appears someone had a go at this before. Can I fix this one? Not looking good so far...
Part 2 here    • Tektronix 2230 Oscilloscope Repair Pa...  

0:00 – Overview
6:00 – Someone has had a go at this!
6:30 – First impressions/visual inspection
9:18 – Storage board lift instructions
11:18 – dodgey soldering and desoldered jumper wires!
14:00 – Attenuator shield removal/further visual inspection
17:44 – Broken knob for Channel 2 attenuator revealed
20:08 – Faulty Cursor select pot/leads ripped
21:37 – visual inspection of power supply section
23:55 – power supply voltage rail testing
28:11 – cursor pot wiring repaired
30:07 – jumper wires reconnected on CH1 & CH2 logic boards
31:16 – verifying ‘probe adj’ operation w/ external scope
35:04 – Isolation of analog circuitry from digital/conclusion