What was found
APP 3 HRS FLT F/A & PAX IN MID CABIN DETECTED ODOR OR BURNING ELECTRONICS. F/A'S POWERED DOWN CABIN FOR 15 MIN & SLOWLY BEGAN POWERING THINGS BACK ON. ODOR DISSIPATED & DID NOT RETURN. NOTIFIED DISPATCH ABOUT ODOR & INOPERATIVE RADAR. MID CABIN GALLEY OVEN & COFFEEMAKER POWER ON. NIL SMELL & SMOKE EVIDENT ON GROUND. POST FLT REPORT LAST LEG CARGO VENT STATUS MESSAGE. DURING ENG START. CONSIDERED ODOR MAY COME FROM CARGO VENT. CARGO VENT TEST C/OUT.