Troubleshooting is a skill, not luck — and the most reliable approach is a divide-and-conquer method: split the signal chain in half, test at the midpoint, and determine which half contains the fault; repeat within that half until the specific failed component or connection is isolated. This is dramatically faster than randomly swapping parts, especially in a complex system with many possible failure points (Weeks 1–3's signal chain, Week 5's control logic, Week 11's cabling, all potentially involved).
Common, high-frequency root causes are worth knowing by heart because they account for a disproportionate share of real failures: loose or poorly terminated cable connections (Week 11), a device that lost power or network connectivity rather than “broke,” a control processor macro that's misconfigured rather than a hardware fault, and EDID/resolution mismatches (Week 2) that look like a broken display but aren't.
A ticketing system and clear documentation of what was tried, what was found, and how it was resolved does two things: it protects institutional knowledge so the same problem isn't re-diagnosed from scratch next time, and it creates an escalation path — knowing when a problem is beyond what should be attempted alone and needs the Audiovisual Supervisor, a vendor, or specialized support.
Because this role provides backup technical helpdesk support to end users, troubleshooting also has a communication half: explaining a technical issue and its resolution in plain language to a judge, attorney, or court staff member who doesn't need (or want) the technical detail, just a clear answer to “is it fixed, and when.”