E03 Vox AC15 Fun 1 of 2; Soldering, cleaning, using an oscilloscope and dummy load

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An English 2000 Vox AC15 with a broken input jack, presented a few more surprises. In this episode we cover some basic service practices that apply to most of the equipment we diagnose and repair; cleaning sticky circuit boards; touching up joints with a big soldering gun; using dummy loads and oscilloscopes for diagnosis verification; and a few other tricks.
1:03 - Using the current limiter
2:10 - Short explanation of Class 'A' vs. Class 'AB' bias
2:42 - Quick safety tip: Using an outlet consistently
3:20 - Verification of the customer complaint
7:20 - Safety tip: Draining the capacitors
10:25 - Analysis of fault
11:10 - Disassembly and inspection of the preamp section with rambling commentary
18:25 - close-up inspection of the break
20:42 - Soldering and repair
25:45 - Weller soldering iron maintenance
28:42 - Cleaning sticky stuff off of the preamp circuit board
29:35 - General amplifier maintenance
32:02 - Reassembly and verification of the repair
42:20 - Testing and verification using a dummy load and oscilloscope
52:30 - Oh oh, more problems
56:17 - More solder joint malfunctions