Industrial control parts supply — encoders, cables and connectors
Board-level repair is where the real money is saved: a 15 kW VFD with a blown gate driver is a 500-dollar board swap, not a 5,000-dollar drive replacement — if you can get the board. OEMs typically stock boards for 5-7 years after a product is discontinued; after that, the surplus market and specialist suppliers are the only source.
TGK Parts sources and bench-tests control boards, driver boards, power boards and communication modules for VFDs, PLCs, servo drives, HMIs and power supplies — matched by serial number and revision, tested where possible before shipping.
| VFD driver boards | Gate driver / inverter output boards for MM4, PowerFlex, Altivar, FR-D/E and Sigma class drives — the most common VFD failure point |
|---|---|
| VFD control & keypad boards | Main control boards, operator panels, display and parameter keyboard assemblies |
| Power boards & rectifiers | Rectifier modules, soft-charge (pre-charge) boards, braking chopper boards, DC bus assemblies |
| PLC I/O & CPU boards | I/O cards, CPU boards, backplanes and power supply modules for S7-200/300/400, SLC 500, FX and MicroLogix platforms |
| HMI & display boards | Touchscreen main boards, LCD panels, inverter boards and backlight assemblies |
| Communication & option boards | PROFIBUS, EtherNet/IP, DeviceNet and CC-Link option cards, interface and gateway modules |
| 1. Send the nameplate photo | Full MPN, serial number and revision letter from the board or unit nameplate |
|---|---|
| 2. Free compatibility check | We match board revision, drive series and any known cross-compatible revisions |
| 3. Quote within 12 hours | New (sealed), tested surplus or refurbished — with condition clearly stated |
| 4. Bench test before shipping | Where the board supports it, we test on a live drive before shipping; no-test items are clearly marked |
| Item | Detail | Note |
|---|---|---|
| Dead board, no visible damage | Usually DC bus capacitor aging or gate drive failure | Board-level repair where possible; else tested replacement board |
| Drive trips OC at startup | Soft-charge resistor or pre-charge board failure | Pre-charge board and resistor replacement |
| PLC I/O card intermittent | Cold solder joints or opto-coupler aging after 15+ years | Reflow / opto replacement service or tested card swap |
| HMI touch dead, display OK | Touch panel or touch controller failure | Touch panel replacement — display and controller often still usable |
Every item is supplied new (sealed), tested surplus or refurbished, with the condition clearly stated before payment. In-stock items ship within 24 hours; obsolete models are sourced through our global surplus network with a quote within 12 hours. All items carry a 12-month warranty.
Yes — that is our core business. Send the full nameplate MPN and serial; boards for discontinued platforms are sourced from the global surplus network, typically quoted within 12 hours.
Where the board can be powered safely, we test it on a matched live unit. Boards that cannot be fully tested are always clearly marked as-is with the reason.
Usually 40-60% cheaper. We offer repair service (reflow, component replacement) for many boards when a replacement is unavailable or uneconomical.