“The BoardMaster and RevEng helped us become self-sufficient and increased our system’s reliability, saving us over US$ 50 million.“
Mario Fioratti, Operations Director at Metrô de São Paulo.
Effective component-level diagnosis without OEM documentation or support required.
Eliminate No Fault Found issues and return boards to service fast
Circuit diagrams created from a physical board for improved obsolescence management






ABI systems support component-level diagnosis and degradation analysis, technical data recovery and repeatable testing across all known problem areas, including traction, braking, signalling and passenger systems. BoardMaster, RevEng and TestFlow help rail maintenance teams reduce diagnostic turnaround, standardise procedures and retain repair knowledge in-house.
Door-control, climate, lighting and auxiliary-control electronics.
Build repeatable in-house diagnostic processes and reduce exposure to external repair lead times.
Inverter, converter, motor-control and power-supply boards.
Diagnose analogue and digital circuit stages using component-level and multi-point testing.
Display, audio, communications and camera-control electronics.
Isolate board-level faults and reduce unnecessary full-board or complete-unit replacement.
TCMS, event-recording, fault-monitoring and onboard communication boards
Investigate intermittent and No Fault Found issues, then capture repeatable diagnostic procedures in TestFlow.
Signal-control, communications and trackside interface PCBs.
Power ON and Power OFF diagnostics, with RevEng support when circuit documentation is missing or incomplete.
Brake-control, wheel-slip protection and sensor-interface PCBs.
Support structured fault diagnosis and technical data recovery within approved maintenance procedures.
Answers on repairing rolling stock and signalling boards in-house down to component level.
Yes, in many applications. BoardMaster supports Power ON and Power OFF fault diagnosis, component testing and known-good-board comparison. RevEng captures connectivity from a physical PCB and generates a netlist that can be used to create professional schematics. The appropriate approach depends on board access, condition, complexity and the available reference information.
There is no fixed extension period. ABI systems help organisations extend supportability by enabling component-level diagnosis, documentation recovery and repeatable testing after conventional OEM support has ended.
Named customers include Alstom, Iarnród Éireann (Irish Rail), CAF, Korail, SFMTA, Metro Rio, VLT Carioca, alongside more than 70 rail companies worldwide.
No. ABI technology complements existing OEM support while reducing dependency for PCB diagnosis, documentation recovery and selected in-house repairs. The operator retains control of its maintenance strategy while continuing to apply its approved engineering and return-to-service procedures.