Bring evidence, not optimism
Use a tuner, short cable, clean amplifier, flashlight, straightedge or ruler, and permission before adjusting anything. Verify serial and ownership claims separately.
Walk the instrument
Start with structure and repairs, then neck and truss-rod access, frets, hardware, electronics, acoustic noise, amplified signal, and setup measurements. Price uncertainty into the decision; do not treat the report as a warranty.
Scope of this guide
Inspect structure, neck, frets, hardware, electronics, and playability before purchase. Use Used Guitar Inspection Guide to make a repeatable decision for this named task, not to impose one specification on every instrument.
Practical example
If output cuts out only when the plug moves, record the cable substitution and physical trigger without declaring that the jack must be replaced. Add untested truss-rod range and hidden repairs to uncertainty, then decide whether an in-person technician assessment belongs in the purchase budget.
Record the conditions
For Used Guitar Inspection Guide, write down instrument type, tuning, installed strings, relevant hardware, climate when material, physical datum, unit, tool resolution, and the result before and after change. A result from this guide is comparable only when its method travels with the number.
Verification checklist
- For Used Guitar Inspection Guide, confirm the starting state and exact question.
- Repeat its critical measurements from the same reference.
- Compare its result with direct observation and applicable maker documentation.
- Change one reversible variable where the task permits.
- Retest the named symptom and preserve unresolved exceptions.
Related workflow
- used guitar inspection — continue when that page answers the next unresolved measurement or decision.
- guitar condition report — continue when that page answers the next unresolved measurement or decision.
Limits
Used Guitar Inspection Guide cannot inspect hidden structure, material condition, service history, or player technique. Stop this guide workflow for electrical hazards, abnormal resistance, structural movement, conflicting readings, or unplanned material removal.