Diagnose Before You Fix
Every guitar problem has a cause. The most important step is identifying exactly where and when the problem occurs — because the same symptom can have different causes. Work through the questions below systematically before attempting any fix.
Most problems experienced by beginners come from playing technique, not from the guitar itself. Before concluding your guitar has a problem, check your hand position, finger pressure, and finger placement carefully. A guitar that buzzes for a beginner often plays perfectly for an experienced player using the correct technique.
Buzzing & Rattling Strings
Buzzing is the most common guitar complaint. Before assuming a setup problem, check these technique causes first:
- Not pressing firmly enough — press until the note rings clearly. Too light = buzz.
- Finger too far from fret — press just behind the fret wire, not in the middle of the space between frets.
- Finger touching adjacent string — arch your finger so only the tip contacts the string you intend to fret.
- Left thumb bent at joint — a bent thumb reduces the pressure your fingers can apply. Keep it straight.
If technique is correct and buzzing persists on specific notes or positions, the cause may be guitar setup:
Action is the height of the strings above the frets. Too low = buzzing on most frets. A luthier can raise the saddle height to fix this.
If one fret is higher than its neighbours, strings will buzz against it when playing nearby frets. Requires professional fret levelling.
The neck should have a very slight forward bow (relief). A completely flat or back-bowed neck causes buzzing in the lower positions. Adjusted via the truss rod — by a professional only.
A loose tuning machine, nut, or internal brace can rattle sympathetically. Tap all parts while the guitar vibrates to locate the source.
Strings That Keep Breaking
Strings break at points of maximum stress and friction. Find out where your string breaks — that location tells you the cause:
- Breaking at the nut — the nut slot may have a sharp edge. Apply pencil graphite (dry lubricant) to the slot. If this does not help, a luthier can file and smooth the slot.
- Breaking at the bridge or saddle — a sharp burr at the saddle is cutting the string. Have a luthier check and smooth it.
- Breaking at the tuning machine — the string hole edge may be sharp. Replace the machine head or have it smoothed.
- Breaking frequently anywhere — strings may be too light for the guitar, or they may be old and work-hardened. Replace the entire set with fresh strings of the correct gauge.
Tuning Instability
If your guitar goes out of tune quickly or repeatedly:
- New strings — stretch them by gently pulling each string away from the fretboard, then re-tune. Repeat several times. New strings take 2–3 sessions to settle.
- Loose tuning pegs — check the peg buttons are tight. Some machines have a small screw in the button that tightens with a screwdriver.
- Nut slots too tight — if a string makes a pinging sound when you tune it, the nut slot is binding. A drop of pencil graphite in the slot often resolves this.
- Tuning up from below — always approach the correct pitch from below (too flat) rather than from above (too sharp). Strings hold tuning better when tensioned upward.
When to See a Professional
Some problems should always be handled by an experienced guitar repairer or luthier — do not attempt these yourself:
- Truss rod adjustment — incorrect adjustment can crack the neck. Always have a professional do this.
- Fret levelling or replacement — requires specialist tools and experience.
- Broken headstock — a clean break can usually be repaired but must be done correctly or the repair may fail.
- Bridge lifting — if the bridge is peeling away from the guitar top, do not play the guitar. Take it immediately to a repairer.
- Unidentifiable buzzing or rattling — if you cannot locate the cause after checking everything, have a professional inspect it.
Always keep a spare complete set of strings in your guitar case. If a string breaks during a session or just before a performance, you can replace it immediately. Old, corroded strings also go out of tune easily and sound dull — replace the full set every 2–3 months if you play regularly.
What's Next?
Lesson 38 — the final lesson — covers how to continue becoming a better guitarist: polishing your playing, reading music regularly, learning from other guitarists, playing to an audience, and deciding whether to take formal lessons.