What was found
SHORTLY AFTER TAKE OFF, CREW NOTICED FAINT BURNING ELECTRICAL ODOR IN THE CABIN. COULD NOT IDENTIFY WHERE THE BURNING ODOR WAS COMING FROM, AND NO INDICATIONS WERE PRESENT ON THE CAD & VOLTAGE METER PLUS NO CIRCUIT BREAKERS WERE POPPED. NOTIFIED OPS OF THE SITUATION, CANCELED THE FLIGHT AND RETURNED BACK TO BASE, AFTER TAKE OFF.