Repairs & Fine Tuning

Professional service for MIDI accordions and acoustic accordions

We specialize in diagnosing, repairing, and optimizing both electronic (MIDI) and traditional acoustic accordions. Whether your instrument needs a quick fix, full overhaul, or precise fine-tuning for stage performance, we handle it end-to-end with meticulous care.

What we repair

1) MIDI Accordions – Electronics & Control

• Faulty key/strap sensors, velocity/aftertouch issues

• Button/keyboard matrix problems, stuck or missing notes

• Bellows pressure sensors (calibration & replacement)

• CPU/MCU boards, power rails, 5V/3.3V regulators, wiring looms

• DIN & USB-MIDI ports, TRS/serial connectors, wireless MIDI modules (BLE/2.4 GHz)

• Display, panel, LEDs, encoders, switches, multiplexers/shift-register chains

• Firmware flashing, configuration, latency optimization

2) Acoustic Accordions – Mechanics & Acoustics

• Reed cleaning, waxing, re-valving, reed block alignment

• Fine tuning (A=440/442/444 Hz), dry/wet musette balancing

• Air leaks, gasket and bellows repairs/replacement

• Keyboard & bass mechanics: key height, travel, spring tension, lubrication

• Register switches, pallets, felt/cork replacement, action noise reduction

• General restoration & cosmetic refresh

Fine Tuning Packages

• Concert Tuning – precise pitch set (e.g., A=442 Hz), even temperament, reed responsiveness optimized.

• Musette Balancing – sets detune spread (light/medium/wet), matched across registers.

• Studio Setup – quiet action, dynamic balance, MIDI velocity curves (for hybrid systems).

• Road Reliability – stress-test, solder reflow on weak joints, cable strain relief, screw/fastener check.

Typical symptoms we fix

• Random MIDI notes, hanging notes, uneven velocity

• No sound on specific rows/registers, dead LEDs, flickering screens

• Air loss, sluggish keys/buttons, noisy action, pitch drift

• Wireless MIDI dropouts, power noise, ground loops

Our process

1. Check-in & quick test – discuss issues, playing style, target tuning.

2. Full diagnostic – electronics + mechanics; report with findings and estimate.

3. Repair & fine tuning – parts replaced/serviced; acoustic or MIDI calibration.

4. QA & play test – thermal/long-session tests, MIDI scopes, leakage checks.

5. Delivery – care tips + work log of what was done.

Turnaround: small fixes 2–5 business days; overhauls 1–3 weeks (depends on parts & workload).
Warranty: parts & labor warranty on completed work (details provided on estimate).

Pricing (guideline)

• Diagnostics: from €25 (deducted if you proceed with repair)

• MIDI repairs: from €45 (minor) / €120–€350 (board/wiring/system work)

• Acoustic service: from €60 (minor) / €180–€600 (reeds/bellows/overhaul)
  Final price depends on model, parts, and scope—confirmed after diagnostics.

Preparation & shipping

• Pack the instrument with firm padding; lock keys and secure bellows.

• Include power supplies/cables only if the fault relates to them.

• International customers: mark “Musical instrument for repair – no commercial value” to avoid customs delays where applicable.

FAQ

Do you repair non-MIDI accordions from any brand?
Yes, we service most European and Japanese models (piano & button), plus hybrids.

Can you tune to A=440/442/444 Hz?
Absolutely. We can also match an existing ensemble or a reference instrument.

Do you support wireless MIDI?
Yes—BLE and 2.4 GHz modules (setup, pairing stability, firmware, latency checks).

Will my settings be saved?
For MIDI jobs we back up configurations and provide a restore file where possible.

Can I get urgent service for a show?
Contact us—we keep limited rush slots. Fees may apply.