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Railway & Train Electronics Repair

Specialized Service for Railway Technology

Railway electronics must meet highest safety and reliability standards. EFIXLAB offers professional repair services for traction systems, control electronics and safety-critical railway equipment with understanding of EN 50155 and related standards.

Supported Equipment Categories

Traction Power Electronics

• Traction converters - 3kV DC / 25kV AC to drive motors
• IGBT inverters - asynchronous motor control, 4-quadrant operation
• Auxiliary converters - onboard power supply 110V/230V AC
• Battery chargers - 110V DC train batteries
• Manufacturers: ABB Traction, Siemens Mobility, Bombardier, Alstom

Train Control Systems

• ETCS onboard units - European Train Control System Level 1/2
• ATP/ATC systems - Automatic Train Protection
• CBTC - Communication-Based Train Control (metro/urban)
• DMI displays - Driver Machine Interface, safety displays

Communication Systems

• GSM-R radios - GSM for Railways, emergency calls
• PIS/IBIS - Passenger Information Systems
• Data recorders - black box systems, legal recording
• CCTV systems - surveillance cameras, DVR units

Signaling Equipment

• Interlocking systems - relay-based and electronic
• Point machines - motor controllers, position detection
• Signal controllers - LED signal heads, lamp monitoring
• Axle counters - track vacancy detection

Railway Standards

• EN 50155 - Electronic equipment for rolling stock
• EN 50121 - EMC for railway applications
• EN 50126/128/129 - RAMS (Reliability, Availability, Maintainability, Safety)
• CENELEC SIL - Safety Integrity Levels (SIL 0-4)

Common Defects

Traction Converter Failures

• IGBT module failures - high current switching, thermal cycling
• Gate driver defects - optocoupler aging, driver IC
• DC-link capacitors - vibration, temperature stress
• Pantograph overvoltage damage - catenary voltage spikes
• Repair: IGBT replacement (3.3kV/4.5kV modules), gate drivers, snubbers

Control System Problems

• Communication errors - MVB/WTB train bus, Ethernet
• ETCS boot failures - flash memory corruption
• DMI display defects - touchscreen, backlight
• Repair: Bus transceivers, memory ICs, display modules

Environmental Damage

• Vibration - cracked solder joints on heavy components
• Temperature extremes - -40°C to +70°C operation
• Humidity and contamination - brake dust, salt spray
• Repair: Re-soldering, conformal coating restoration

Repair Services

• Traction converter module repair - IGBT, diodes, capacitors
• Control board repair - CPU, memory, communication
• Power supply regeneration - auxiliary converters, DC/DC
• Display and HMI repair - DMI, passenger displays
• Sensor and interface module repair
• Conformal coating application (EN 50155 compliant)