Diagnose functional failures by analyzing circuit-level faults. Use diagnostic tools like oscilloscopes, multimeters, and RF test equipment. Execute BIOS re-programming and firmware flashing when required. Test and repair passive and active components at the board level. Interpret electronic schematics and datasheets for accurate fault isolation. Work on telecom products such as RRH, Microcells, MMUs, Control Cards, Channel Cards, and Duplexers.