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

Press "SHOW MORE" for a linked Table of Contents" 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