Repair case studies

Real faults. Recorded findings.

These workshop accounts explain what was found, what work was carried out and how the result was checked. Each is based on a completed bench report.

Discuss your repair

Guitar and amplifier work

From the Guitar Doctor UK bench.

Emprise Harrier valve amplifier circuitry on the workshop bench

Emprise Harrier: tracking down noisy reverb

Tracing spitting, crackling and popping to an open-circuit reverb transformer primary, fitting a replacement and checking the result.

Read the Harrier case study →
Testing the Vox AC30 amplifier circuitry at the workbench

Vox AC30C2: tracing power-supply buzz

A failed reservoir capacitor was identified through power-supply measurements. The repair was followed by controlled power-up, valve checks and a play test.

Read the AC30 case study →
Sunburst Harmony Rocket in the workshop

Harmony Rocket: repairs and setup

Bridge repairs, neck geometry, careful cleaning and a setup that brought a comfortable playing feel to this hollow-body guitar.

Read the Harmony case study →
Martin acoustic guitar at the bench for an LR Baggs Anthem installation

Martin acoustic: LR Baggs Anthem installation

Fitting a pickup system, preserving the action and resolving an undersaddle pickup fault before the guitar was returned.

Read the Martin case study →

Start with a conversation

Tell me what needs attention.

Send the make, model and symptoms, or book a workshop appointment. Discuss courier arrangements before sending an amplifier.

Workshop visits by appointment · Lowestoft, Suffolk