Electronics Repair

Medical and Laboratory Equipment

Electronics repair for patient monitors, ultrasound (USG) scanners, X-ray units, ECG machines, defibrillators, endoscopes, autoclaves, dental chairs and laboratory instruments: control boards, sensors, high-voltage power supplies and calibration.

• The device will not power on or shuts itself down
• Image loss or banding on the ultrasound (USG) scanner
• High-voltage block failure on the X-ray unit
• ECG traces read incorrectly or drift
• Sensor and module calibration lost on the patient monitor
• Defibrillator no longer delivers energy
• Autoclave will not hold pressure, the cycle stops halfway
• Endoscope light source or camera module fault
• Power supply or internal UPS battery replacement
• Display and touch panel unresponsive
• Burnt pump or motor drive circuit
• Control board fault in a laboratory centrifuge or incubator

PLC / HMI / Industrial Controllers

Electronics repair for PLCs, HMI operator panels, panel PCs and industrial controllers. Siemens, Delta, Schneider, Omron, Allen-Bradley, Mitsubishi. Component-level circuit board repair: I/O channels, power stages, communication drivers and touch screen replacement.

• The control unit has failed and will not start
• Loss of communication (Modbus, RS-485, Profibus, Profinet)
• An I/O channel sees no signal
• An analogue input reads the wrong value
• Burn damage in the power section, capacitor trouble
• The HMI touch screen does not respond
• The HMI screen has washed out or the backlight is dead
• The operator panel starts but the project will not load
• The controller restarts itself periodically
• The memory battery is flat and the program is lost
• The CNC machine control unit reports a fault
• Relay outputs will not switch, the contacts are burnt

VFD / Frequency Inverter / Servo Drive

Electronics repair for variable frequency drives (VFD), motor drives and servo drives. Danfoss, ABB, Yaskawa, Lenze, Schneider, Siemens. IGBT module replacement on three-phase industrial inverters, DC bus capacitors and circuit board repair.

• The IGBT module has burnt out, the drive will not start
• The motor will not run, the drive shows an error code
• Protection trips under load and the drive stops
• A failed current sensor gives wrong readings
• Loss of encoder feedback
• The servo motor judders and will not hold position
• DC bus voltage will not rise, or is too high
• The cooling fan has stopped and the drive overheats
• The keypad or panel does not respond
• Control over Modbus / the network drops out
• An earth fault is reported
• The braking resistor circuit does not work

Welding Machine Repair

Welding machine repair — inverter welders (MMA), semi-automatic MIG/MAG, argon TIG and plasma cutters. Component-level board repair: IGBT module, gate driver, power supply stage, control board and thermal protection. Telwin, Kemppi, ESAB, Lincoln, Aurora, Fubag.

• Machine does not power on, display stays dark
• No arc, electrode sticks
• Current cannot be adjusted
• Shuts down suddenly during work
• Thermal protection trips too early
• Fan does not spin, machine overheats
• Error code on display, unit locks out
• Wire feeder stops on semi-automatic machines
• Gas valve does not open on TIG
• No pilot arc on plasma cutter
• IGBT module blown, short circuit present
• Stopped working after a mains voltage surge

Cosmetology and Beauty Salon Equipment

Electronics repair for laser hair removal devices (diode, alexandrite), cavitation, RF lifting, cryolipolysis, hydrafacial units and cosmetic combines. Power supply, control board, cooling circuit and applicator handpiece restoration.

• The laser hair removal device fires no pulse, the handpiece does not light
• Laser output has weakened, sessions give no result
• The cavitation handpiece is dead
• The RF lifting unit's electrode does not heat or throws an error
• The cryolipolysis unit will not reach temperature
• The hydrafacial device holds no vacuum, the pump is dead
• The cosmetic combine will not start, the screen stays dark
• The device runs briefly then goes into protection
• The cooling system (chiller) leaks or the fan has stopped
• The touch screen is unresponsive, the menu freezes
• Foot pedal and connector faults
• The autoclave does not complete its sterilisation cycle

Automotive Electronics (ECU, ABS)

Automotive electronics repair: ECU (engine control unit), ABS module, BCM, airbag module, instrument cluster and transmission control unit (TCU). Component-level circuit board repair, EEPROM read/write and restoration of factory firmware.

• The ECU throws a fault code, the diagnostic tool cannot read it
• The engine will not start, the ECU does not respond
• The ABS light stays on, a sensor fault persists
• The transmission control unit (TCU) will not manage gear changes
• Segments on the instrument cluster flicker
• The airbag module holds a fault, the light is on
• The BCM will not control the lights or central locking
• An injector or coil driver chip has burnt out
• Water has entered the unit, there is corrosion
• EEPROM data is lost, the key is not recognised
• Connector pins are oxidised, contact is lost
• Communication drops on the CAN bus

Industrial Power Supplies (Industrial PSU)

Electronics repair for industrial power supplies: DIN-rail 24V/48V units, redundant supplies, industrial UPS, voltage stabilisers and laboratory power supplies. Component-level circuit board repair — PFC stage, switching transistor, capacitors and BMS.

• No output voltage
• The output voltage sags or drifts
• It goes into protection and will not power the load
• The fuse blows repeatedly
• A burnt PFC stage, the input current is high
• Swollen capacitors and ripple on the output
• The unit hums, the transformer vibrates
• The UPS will not charge the battery
• The UPS drops the load when the mains fails
• The stabiliser will not regulate the voltage
• The fan has stopped and the unit overheats
• A redundant module will not share the load

Measurement and Lab Instruments

Electronics repair for test and laboratory instruments: oscilloscopes, spectrum analysers, signal generators, multimeters, laboratory power supplies, radiation monitoring and telemetry devices. Component-level circuit board repair and restoration of the measurement path.

• Accuracy is lost, the reading has drifted
• Overvoltage on the input burnt the protection
• A channel sees no signal
• There is drift in the ADC / DAC channel
• The display is dark or banded
• The encoder knob does not respond, the menu jumps
• The instrument will not start, the internal supply is burnt
• The calibration data is lost
• The probe input makes no contact
• The fan has stopped and the unit overheats
• The radiation detector does not count
• The telemetry unit receives no sensor data

BGA Reballing / SMD Soldering

Chip restoration with professional BGA equipment (BGA reballing), reflow and SMD soldering. GPU, chipset and memory chip replacement, component transfer from donor boards, and the elimination of cold solder joints and micro-cracks — the finest part of circuit board repair.

• GPU / CPU cold solder joint restoration
• BGA reballing and reflow service
• Chip replacement (from a donor board)
• Restoring micro-cracks under a chip
• Memory and chipset replacement (laptop, console)
• The device works when warm and dies when cold
• Artefacts and banding on screen (graphics chip)
• Restoring lifted solder pads
• Re-soldering a torn-off connector
• Precise replacement of micro SMD components
• Saving a board after an earlier unskilled repair
• Restoring a broken trace on a multilayer board

Lift and Escalator Control System Repair

Lift repair — main controller board, call panels, frequency inverter, door operator and safety chain electronics. Escalator control units. Component-level board repair: Otis, Kone, Schindler, ThyssenKrupp, Monarch, Arkel, Fermator.

• Lift does not answer calls
• Does not stop level with the floor
• Door will not open or stops halfway
• Error code on display, system locks out
• Frequency inverter reports a fault
• Call panel buttons not working
• Floor indicator shows wrong number
• Safety chain break signal
• Encoder signal lost
• Burnt power supply section
• Door operator board unresponsive
• System will not come up after a surge

UPS and Voltage Stabilizer Repair

Repair of UPS units, voltage stabilizers and inverters. Component-level board repair: control board, inverter stage, charging circuit, bypass relay and battery management. APC, Eaton, Powercom, Ippon.

• Mains present but UPS runs from battery
• New battery still drains quickly
• Continuous beeping, will not take load
• Error code on display, stuck in bypass
• Not charging, battery voltage does not rise
• No output voltage
• Stabilizer does not regulate voltage
• Relay clicks constantly, output jumps
• Transformer overheats, burning smell
• Trips the breaker on start-up
• Fan not running, unit overheats
• Dead after a mains surge

Cash Register, POS Terminal and Electronic Scale Repair

Repair of cash registers, POS terminals and electronic scales. Component-level board repair: print mechanism control, power supply, keypad and display controller, load-cell measuring circuit. Datecs, Sam4s, CAS, Mettler Toledo, Digi.

• Register will not power on
• Receipt not printed or prints faint
• Paper jams in the feeder
• Keypad buttons not working
• Characters missing on display
• Backup battery dead, date resets
• POS terminal will not connect
• Card reader does not detect cards
• Scale will not zero, shows wrong weight
• Error code on scale display
• Load cell gives no signal
• Dead after a mains surge

HVAC, Air Conditioner and Home Appliance Boards

Electronics repair for boiler (combi) boards, inverter air conditioners, chillers, VRV/VRF systems, washing machines, refrigerators and dishwashers. Component-level circuit board repair: power section, relays, IGBT modules and microcontroller recovery.

• The boiler board will not start, shows an error code (F04, E01 etc.)
• The boiler will not ignite, there is no spark
• It heats water but the heating circuit does not work
• The display is dark, the buttons do not respond
• A burnt IGBT / PFC module in the air conditioner outdoor unit
• The air conditioner starts, then stops after a few minutes
• A communication error on the chiller / VRV / VRF control board
• The washing machine stops mid-programme
• The washing machine motor will not turn, no tacho signal
• The dishwasher control board reports a water fault
• The refrigerator's inverter compressor drive is dead
• The relay clicks but the load does not switch on

Solar Inverter, MPPT and Battery BMS

Electronics repair for solar inverters, MPPT charge controllers, Li-ion and LiFePO4 battery BMS boards and wind turbine control boards. Component-level circuit board repair for on-grid and off-grid systems.

• The inverter will not start, the display stays dark
• The inverter throws an error code and stops
• The output voltage of the MPPT charge controller drops
• The system takes no energy from the panels
• An IGBT or MOSFET module has burnt out
• The battery pack will not charge
• Battery capacity has fallen sharply
• The BMS will not balance, the cells differ
• Grid export (on-grid) does not work
• The load drops out at night
• The fan has stopped and the inverter overheats
• The wind turbine pitch control does not respond

Server, Networking and Crypto Miner

Electronics repair for servers, network equipment and ASIC miners: server power supplies and mainboards, switches and routers, PoE ports, SFP/QSFP interfaces and hashboards. Component-level circuit board repair, express handling for data centres.

• A redundant server power supply has burnt out
• The mainboard will not POST
• IPMI / BMC does not respond
• The server starts, then shuts itself down
• A short on the PoE port of network equipment
• Switch ports will not link
• The SFP / QSFP port does not see the module
• The router will not start, no indicators light
• The ASIC miner hashboard is losing chips
• The miner power supply has burnt out
• A punctured MOSFET in the VRM circuit
• The fans run at full speed, the system overheats

Laptop / Desktop Motherboard

Laptop and desktop motherboard repair — circuit board repair at component level. Short-circuit diagnostics, MOSFET, chip and connector replacement, DC-jack restoration, BIOS/EC programming and GPU reballing (Nvidia, AMD).

• Not charging, battery not detected
• Powers on, screen stays black (no display)
• Will not start, no lights at all
• Overheats and shuts itself down
• The DC-jack is torn loose and wobbles
• Liquid has been spilled on it
• Artefacts, banding or colour distortion on screen
• USB, HDMI and Type-C ports are dead
• Keyboard or trackpad unresponsive
• The battery charges but drains quickly
• BIOS password or corrupted firmware
• The fan runs at full speed, the system throttles

TV / Monitor / Displays

Electronics repair for LCD, LED and OLED televisions and computer monitors. Component-level circuit board repair: power board, mainboard, T-CON and backlight driver restoration.

We do not replace screen panels (matrix).

• Sound but no picture (backlight driver)
• The power board has burnt out, the TV will not turn on
• The TV will not start, only the standby light is on
• The screen lights up for a moment then goes dark
• Picture but no sound
• Banding, blotches or colour distortion on screen (T-CON)
• Half the picture shows, the rest goes dark
• The HDMI inputs see no signal
• Smart functions freeze, the remote does not respond
• The TV switches itself off and back on
• Nothing works at all after a lightning strike
• The monitor will not wake from standby

Amplifier / Audio Systems

Electronics repair for audio amplifiers and sound systems: home and car amplifiers, DJ mixers, studio equipment, PA and conference systems, DSP processors. Component-level circuit board repair — output stage, power section and relay assembly.

• One channel is dead, no sound
• The unit sticks in protect mode
• A loud pop from the speakers at switch-on
• Crackle and distortion in the sound
• There is hum in the output
• The output power has dropped
• The unit overheats and shuts itself down
• The inputs see no signal, the potentiometer crackles
• Fader and channel loss on a DJ mixer
• The DSP processor freezes and loses its settings
• Zones stay silent on a PA system
• The Bluetooth/network module will not connect

Security and Smart Home Systems

Electronics repair for security and smart home systems: DVR/NVR mainboards, IP camera power supplies and PoE, fire alarm panels, KNX/Zigbee controllers, access control, turnstiles and barriers, and door entry systems. Component-level circuit board repair.

• The DVR / NVR will not start or does not see the disk
• A short on the IP camera PoE port
• The camera power supply has burnt out
• A zone fault on the fire alarm panel
• The access control unit will not read cards
• The turnstile or barrier motor drive is dead
• The door entry system shows no picture
• The recorder does not appear on the network
• The system will not start after a lightning strike
• The KNX / Zigbee controller does not respond
• A leaking battery in the alarm panel
• The night vision (IR) illumination does not light

Schematic Reverse Engineering and Prototype

Schematic reconstruction (reverse engineering), schematic capture in Altium and KiCad, component identification and prototype PCB assembly. Rebuilding the circuit of boards with no service documentation — the first step of circuit board repair.

• Diagnosing a device with no manual or service documentation
• Schematic reconstruction
• Identifying a component whose marking has been removed
• Custom PCB assembly (with your components)
• Rework and component replacement
• ADC / PWM controller diagnostics
• Short circuit and feedback loop restoration
• Repair of one-off, custom-built equipment
• Rebuilding the circuit of a discontinued model
• Determining inner-layer traces on a multilayer board
• Rework and verification on prototype boards
• Recalculating an analogue circuit

Forklift, ROV, Marine and Crane Electronics

Electronics repair for specialised machinery: forklift Curtis and ZAPI controllers, thruster drives for ROVs and industrial drones, marine radar, GPS and AIS navigation units, and crane control boards. Circuit board repair built for harsh conditions.

• The forklift Curtis / ZAPI controller throws a fault
• The forklift will not start, speed control does not respond
• The ROV thruster drive is dead
• The industrial drone's ESC module has burnt out
• The marine radar shows no picture
• The GPS and AIS navigation unit receives no signal
• The crane limit switch does not work
• The crane drive will not lift the load
• Communication drops on the CAN bus
• Corrosion on connectors from salt air
• Cracked solder joints from vibration
• The telemetry module transmits no data