Sajjad Lohrasbi

• Perform diagnostics, repair, and calibration of medical laboratory equipment including Thermal Cyclers (PCR), Real-Time PCR, and ELISA instruments. • Improve device reliability and accuracy for DNA/RNA amplification and detection systems through component-level troubleshooting and preventive maintenance. • Ensure compliance with medical device standards and optimize system performance in clinical laboratory environments.

• Conducted quality assurance testing on batteries, medical devices, sensors, fire alarm systems, and elevator control panels in compliance with IEC and EN standards. • Executed performance testing per IEC 62133 and IEC 61960, vibration testing per EN 81-1, and temperature testing per IEC 60068-2-27/29. • Improved vibration testing protocols and increased measurement accuracy by refining calibration methods and redesigning test report templates to enhance clarity and compliance documentation.

• Repaired, upgraded, and optimized computer power supplies (PSUs) for gaming PCs, servers, and cryptocurrency mining rigs. • Provided performance guarantees and retrofitted older units with enhanced output capability, extending product lifespan at minimal cost. • Built and configured custom computers for clients, focusing on stability, efficiency, and cooling performance.

• Managed quality control for Smart Farming IoT devices including health monitors, milk/weight meters, RFID readers, and environmental sensors. • Redesigned enclosures and seals for multiple devices to achieve IP-rated waterproof certification, improving field durability. • Established and structured the Quality Control, Production, and Assembly departments, implementing standardized testing and assembly procedures.

• Designed and manufactured a portable Thermal Calibration Device compliant with ITS-90 standards for calibrating thermocouples and RTD sensors. • Achieved high-precision measurement at significantly reduced cost through optimized circuit design and careful component selection. • Developed embedded system using ATmega128A microcontroller, 24-bit ADC, 12-bit DAC, relay-based resistance simulation, and C programming.

• Diagnosed and repaired Samsung Smart TVs, addressing faults in power supplies, mainboards, T-Con boards, LVDS cables, backlight LEDs, and LCD panels. • Utilized schematic diagrams and systematic troubleshooting to restore full functionality, ensuring high customer satisfaction and repeat business.

• Repaired computer power supplies and assembled custom PC systems for retail customers. • Conducted testing, component replacement, and performance validation to ensure reliability before delivery.