Korg Concert C-3500 Power Connector

Korg Concert C-3500 — Power Connector Replacement (Snap-fit, 2-part)

Replacement for the proprietary AC power connector used on the Korg Concert C-3500 and compatible vintage Korg keyboards (DSS-1, DS-8, DW-6000, DW-8000, M1, T-series).

The original connector is no longer manufactured and nearly impossible to source. This model reproduces the exact geometry from the original part.

Specs

• Overall dimensions: 20 × 13 × 40 mm

• Pin apertures: 3.2 × 5.2 mm, 10 mm center-to-center

• White contact bed: 6.3 × 9 × 9 mm pockets, 3 mm inset from front face

• Cable channels: 6.5 × 6 mm (assembled), from Z=12 mm to back face

• 2-part design (male + female), cantilever snap-fit assembly — no screws, no glue required

How it works
The male half holds the brass contacts and carries two cantilever arms (one per side). Press the female half down onto the male: the arms deflect inward as the hook rides the ramp, then snap into the retaining recess in the female slot. To release, push the arms inward and separate.

Print settings

• Material: ASA or PC (NEVER PLA — 230 V AC application, thermal and dielectric resistance required)

• Infill: 100%

• Perimeters/walls: 4 minimum

• Layer height: 0.15 mm recommended

• Supports: not required

Assembly

1. Recover the brass contacts from the original broken connector

2. Insert contacts into the male half pockets

3. Solder or crimp the cable wires to the contacts

4. Press the female half onto the male until it clicks

5. Apply epoxy resin around the contacts before final assembly — mandatory for a 230 V application

⚠ Safety notice
This part carries 230 V AC mains voltage. It is a repair/temporary solution, not a certified component. It does not comply with NF C 15-100 or IEC 60320. Use at your own risk. Potting the contacts with epoxy resin before closing the connector is strongly recommended.

Files

• korg_male.stl — male half (cantilever arms + contact pockets)

• korg_female.stl — female half (arm slots + hook recesses)

• korg_connector_final.scad — parametric source (OpenSCAD), all dimensions adjustable