Specialty and Unusual Electronics Repair

We Repair What Others Won\'t

At EFIXLAB we take on electronics that regular service centres refuse — from vintage devices through custom prototypes to scientific instruments. Our experience in PCB-level repair, ability to read schematics and reverse-engineer circuits, and access to rare components mean that we have the solution where others say it\'s impossible.

Vintage and Collector Electronics

We service devices from past decades, preserving their original character:

Analogue measuring instruments — oscilloscopes, generators, multimeters (Tektronix, HP/Agilent, Fluke)
Valves / vacuum tubes — tube amplifiers, radio receivers, test equipment (tube testing, socket and transformer service)
Vintage radios and TVs — lamp/transistor radio repair, CRT television regeneration
Tape recorders — Studer, Revox, Nagra (motor repair, head alignment, electronics regeneration)
Vintage synthesizers — Moog, Roland, Korg (VCO, VCF, VCA analog circuit repair)
Pinball machines — Williams, Bally, Gottlieb (MPU board, driver board, display repair)

Custom and Prototype Electronics

University and research lab devices — one-off measurement systems (without documentation repair)
Custom control systems — home-built automation controllers (expansion, repair)
Prototype boards — handmade PCBs, experimental circuits (debugging, optimization)
Custom IoT devices — specialized IoT nodes, gateways (firmware/hardware repair)

Out-of-Support Manufacturer Equipment

End-of-life (EOL) industrial electronics — discontinued PLC, HMI (component-level repair)
Legacy servers and workstations — Sun, SGI, DEC, HP (board-level repair)
Industrial instruments — retired Yokogawa, Endress+Hauser devices
Specialized controllers — obsolete building automation and HVAC systems

Scientific and Research Instruments

Spectral analyzers — optical and RF spectrum analyzers (detector, mixer, display repair)
Laboratory power supplies — precision DC sources (regulation circuitry, DAC repair)
Signal generators — RF, audio, pulse generators (PLL, DDS synthesis repair)
Oscilloscopes — analog and digital (ADC, trigger, timebase repair)

High-End Audio Equipment

Hi-Fi amplifiers — McIntosh, Mark Levinson, Accuphase (power stage, caps, bias adjustment)
Studio equipment — Neve, SSL, API (preamp, equalizer, mix bus repair)
Tube amplifiers — Luxman, Jadis, Audio Research (tube matching, transformer repair)
CD / SACD players — laser, DSP, DAC service (Esoteric, Marantz, dCS)

Amateur Radio (Ham) Equipment

HF/VHF/UHF transceivers — Yaesu, Icom, Kenwood (PA module, PLL, IF board repair)
Linear amplifiers — tube/solid-state PA (tube replacement, tank circuit repair)
Antenna tuners — manual/auto tuners (relay, varactor, L/C component repair)
Digital modes — TNC, modem, digital interface repair

Retro Automotive Electronics

Classic car ECU — Bosch Motronic, Jetronic (chip tuning, electronics repair)
Vintage instrument panels — speedometer, tachometer electronics regeneration
OEM car audio — Becker, Blaupunkt vintage radio repair

Retro Gaming and Consoles

Arcade boards — Jamma, Neo-Geo, Capcom (custom IC, RAM, ROM repair)
Consoles — NES, SNES, Mega Drive, PlayStation 1/2 (laser, video output, power repair)
Home computers — Commodore 64, Amiga, ZX Spectrum (SID, Paula, CIA custom IC service)
CRT monitors — arcade and retro TV (flyback transformer, deflection, tube service)

Home Medical Devices

CPAP / BiPAP — ResMed, Philips Respironics (motor, humidifier, display repair)
Hearing aids — Phonak, Oticon, Widex (receiver, microphone service)
Home monitors — glucose meter, blood pressure monitor electronics repair

What We Repair

Analog Circuits

Transistor amplifiers — bias correction, transistor matching
Operational amplifier circuits — offset correction, stability
Analog filters — frequency response restoration
Power supply regulation — reference, feedback repair

Tube Circuits

Vacuum tube testing and matching
Output transformer repair / replacement
High-voltage power supply regeneration
Socket replacement, coupling capacitor service

Custom and Rare ICs

Finding equivalents for discontinued ICs
Ceramic and metal-can IC replacement
Custom ASIC functional replacements
FPGA-based emulation of unavailable chips

PCB Repair and Regeneration

Trace repair and rerouting on damaged PCBs
Multi-layer board inner layer repair
Pad and via rebuilding
Cleaning after corrosion, flood or leak damage

Power Supply Repair

Linear and switching power supply regeneration
Electrolytic capacitor replacement (full recap)
Voltage regulator repair, reference IC replacement
Battery pack rebuilding (NiCd → Li-Ion)

Displays and Indicators

Nixie tube displays (driver, anode resistor service)
VFD (vacuum fluorescent display) regeneration
LED and LCD display controller repair
CRT — high voltage, deflection, tube rejuvenation

Reverse Engineering Process

For devices without documentation we perform a reverse engineering process:

Schematic reconstruction — tracing PCB tracks, creating a circuit diagram
Component identification — determining IC types, special components
Signal analysis — oscilloscope / logic analyzer based investigations
Documentation — creating working documentation for the device

Example Scenarios

A unique measuring instrument from a university lab — no documentation, parts, or service available
A 1980s industrial controller — the manufacturer no longer exists
A custom research data acquisition device — built by PhD students years ago, nobody remembers how it works