Mandy Concepcion has worked in the automotive field for over 34 years. He holds a Bachelor's Degree in Applied Electronics Engineering as well as an ASE Master & L1 certification.

For the past 25 years, he has been exclusively involved in the diagnosis of all the different electronic systems found in today's vehicles. It is here where he draws extensive practical knowledge from his experience and hopes to convey it in his books. Mandy also produces an automotive technology DVD-Video series, writes auto repair diagnostics books, develops automotive software and designs OBD-2 scanners, scopes and other diagnostic equipment. The development of specialized electronic diagnostic equipment is now one of his main endeavors. This also includes embedded system with micro controllers.