Control board and module repair
Control board, industrial controller, power-supply board and power-module repair in Riga. Soldering, trace repair and component diagnostics.
Control-board repair makes sense when the equipment itself is still valuable, but the manufacturer board is unavailable or costs almost as much as a new assembly. At the SATER workshop we repair industrial controllers, control boards, power-supply boards, display modules, relay boards and electronics from pumps, compressors, heating, ventilation and production equipment. We check power rails, relays, optocouplers, regulators, MOSFET/IGBT stages, electrolytic capacitors, crystals, connectors, burnt traces and moisture damage. If a microcontroller firmware image is irreversibly lost and no copy exists, repair may not be possible; but very often the fault is in the surrounding circuitry: supply rail, relay output, sensor input, overheated driver or broken trace. Diagnostics starts with the exact symptom and equipment model, not blind parts swapping.
Popular models we repair
- Industrial equipment control boards
- Heating and ventilation controllers
- Pump and compressor control modules
- UPS and power-supply boards
- Variable-frequency drive control boards
- Schneider Altivar / Siemens / ABB modules
- Danfoss VLT and Lenze control boards
- Omron, Delta and Mitsubishi controllers
- LCD, button and keypad panels
- Custom production-equipment PCBs
Common problems we fix
- Control module will not power on or trips protection immediately
- Equipment shows an error code while the mechanics are healthy
- Relay output, pump, fan or heater does not switch
- Power board whines, overheats or gives unstable voltage
- Moisture or surge damage to traces and components
- Display is dark, buttons do not respond or the panel reboots
- VFD shows drive, DC bus or overcurrent error
- RS485, CAN or Modbus communication drops intermittently
Component diagnostics before parts replacement
In control-board repair we first measure supply voltages, shorts and load, then inspect output circuits and signal inputs. On many boards the main microcontroller is healthy, but the 5 V or 12 V rail is missing, a relay is burnt, an optocoupler no longer transfers the signal or one power transistor has failed. In those cases repair is far cheaper than a new module.
When a control board is not repairable
We also say the opposite honestly: if a locked processor with unique firmware is dead, a multilayer board has burnt through or the equipment is cheap enough that labour exceeds the price of a new part, we do not push the repair. The aim is to restore economically sensible modules, not to repair at any cost.
Pricing & warranty
Diagnostics after an initial consultation. Warranty: 3 months.
If the repair cost changes during the process, the technician will call to agree on the new price. No work is done without your consent.
Frequently asked questions
Why customers choose SATER
- Individual approach to every device. No off-the-shelf solution? We develop a repair method for your specific case.
- Component-level PCB repair. We work with SMD components, BGA soldering and non-standard modules.
- Free initial consultation. Bring the device in — we'll assess repairability and give you a ballpark quote.
- 30+ years of experience. The service centre has been operating since 1993.
- We serve all of Latvia. Electronics service centre in Riga — we accept devices from anywhere in the country.