What was found
ATB F/A CALLED TO REPORT STRONG ELECTRICAL ODOR IN THE AFT AND FWD CABIN. STRONG ODOR IN THE COCKPIT, GALLEY SWITCH TURNED OFF AND RETURNED FOR LANDING. RAN LT & RT PACKS W/ APU NO SMELL NOTED, RAN LT & RT PACKS WITH BOTH ENGINES RUNNING. NO SMELL NOTED. CHECK CARGO COMPARTMENT AND AFT ACCESSORY AREA NO EVIDENCE OF BURN ODOR. OPS CHECK EXTERNAL LIGHTS, OPS GOOD. NO EVIDENCE OF BURN ODOR. R & R LT AND RT COALESCER BAGS IAW AMM 21-54-08, LEAK AND OPS CHECK GOOD. LAV C, AFT LEFT, SMOKE DETECTOR POPPING C/B, LAV LOCKED-OUT, LAVATORY SMOKE DETECTION & WARNING SYS, R & R LEFT AFT LAVATORY SMOKE DETECTOR AMM 26-14-01, OPS CHECK GOOD MIC SHEET PLACARD REMOVED.