VFDs and AC drives
Power stage, DC bus and control faults repaired and tested under load.
VFD repairRepair-return · PCB and power electronics
PCB repair in India: industrial PCB and power electronics repair
Star Automations repairs industrial PCBs and power electronics at component level at its factory in Puducherry: power supplies, inverter and converter boards, SCR firing boards and machine control boards. Each board is tested on a rig or custom jig before it is returned with a printed test report. Repair warranty is 3 months to 1 year, stated on each quotation.
01How we test
How we test
Boards are tested on rigs and custom jigs built for them, under load where the board calls for it.
- Inward check with photos; serial number logged.
- Fault traced at component level: power stage, gate drive, control, feedback.
- Quote with findings before work starts.
- Tested on a rig or custom jig; drives run with a motor under load.
- All work at ESD-protected benches.
- Printed test report, traceable by serial number.
02Faults
Boards we repair
- Switch-mode power supplies
- Inverter and converter power boards
- SCR and thyristor firing boards
- Machine control and I/O boards
- Gate drive and driver boards
- Boards with no schematic available
03Brands
Brands we work on
Brand names describe the equipment we repair. Not listed? Send the nameplate and we check before you ship.
Boards from any make of industrial equipment: send photos of both sides of the board and we check before you ship.
Boards we repair: RFQ matrix
| Board type | Found in | Faults addressed | Route |
|---|---|---|---|
| Switch-mode power supplies | Drives, PLC racks, machine controls | No output, low or noisy output, blown fuse, failed switching parts | Repair |
| Inverter and converter power boards | VFDs, servo drives, solar inverters | IGBT and power stage failures, DC bus faults | Repair |
| SCR and thyristor firing boards | DC drives, rectifiers, heating controls | No firing, misfiring, trips | Repair |
| Gate drive and driver boards | VFDs and servo drives | Overcurrent trips, gate drive failure | Repair |
| Machine control and I/O boards | CNC, packaging, textile and plastics machines | No display, I/O faults, communication faults | Repair; obsolete replacement on request |
| Servo drive control and feedback boards | Servo drives and amplifiers | Encoder and feedback alarms, communication faults | Repair; tested with a motor under load |
Not listed? Send photos of both sides of the board and the fault. We check before you ship.
PCB repair turnaround: same day, 3 days or 7 days
Emergency: same day
For a stopped line. Send board photos and the fault first.
Urgent: 3 days
Once the fault is confirmed on inspection.
Standard: 7 days
Planned repair with the test and a printed report.
Time depends on the fault and on parts. We are an independent multi-brand repair company, not an OEM service centre.
How to send a board for repair
Photograph the board
Both sides, with the part number or label visible.
Tell us the fault
What the machine did, any alarm code, and whether power was lost or surged.
We confirm
We say whether we can repair it before you courier.
Inspection and quote
You get the findings and a quote before repair work starts.
Repair, test, dispatch
Repaired at component level, tested, and returned with a printed test report.
PCB repair for overseas customers, and when a board cannot be repaired
Customers in the USA, Europe and the Middle East can courier boards to us in India. We repair at component level, test, and ship back worldwide with export documentation handled. See industrial spares from India. If a board is beyond repair or its parts are discontinued, we can look at legacy PCB reverse engineering and re-manufacturing.
Can you repair a board without a schematic?
Often, yes. Most industrial boards are repaired by tracing the circuit and testing components directly. Send photos of both sides of the board and the fault.
Do you repair power supplies?
Yes. Switch-mode and linear power supplies are repaired at component level and tested under load before return.
How are repaired boards tested?
On test rigs and custom jigs built for them, at ESD-protected benches, and each board comes back with a printed test report traceable by serial number.
What if the board cannot be repaired?
We tell you with the findings before any charge for repair work, and we can often source a replacement as an obsolete spare.
How much does PCB repair cost?
It depends on the board and the fault. We inspect first and quote before any repair work starts. Send photos of both sides of the board and the fault.
How long does PCB repair take?
Emergency repair can be done the same day, urgent in 3 days and standard in 7 days, depending on the fault and parts.
Do you repair CNC and drive boards?
Yes. We repair machine control boards, servo drive boards and VFD boards at component level. Send photos and the fault code.
Also repaired at Star Automations: power electronics, e-mobility and solar
The same bench that repairs servo drives and VFDs also repairs the power electronics in inverters, UPS units, EV chargers and BMS boards. Send the model and fault and we confirm repairability before you ship.
Inverter repair
Solar, hybrid, off-grid and home inverters.
UPS repair
Online, line-interactive and industrial UPS boards.
Lithium battery and BMS repair
BMS boards, packs and chargers.
EV charger repair
Portable, AC wall-box and small vehicle chargers.
EV traction motor and resolver
PMSM and BLDC traction motors, resolver and encoder faults.
BLDC and EV controller repair
Curtis, Zapi, hub-motor, EC fan and industrial BLDC drivers.
Send a part number or a photo of the nameplate.
We reply with what we can do and what happens next. WhatsApp or call +91 97866 22233, or email info@starautomations.com.
Have surplus, decommissioned or spare industrial electronics?
We buy surplus and dead-stock automation parts. Send your parts list and we reply with how we can help. See how surplus buyback works.