What was found
THREE EMERGENCY EXIT LIGHT BATTERY PACKS REQUIRE REPLACEMENT. LOCATIONS: ROW 13-14 ABC, 20-21 ABC, AFT GALLEY CEILING LEFT SIDE. R & R ALL THREE BATTERY PACKS, ROW13 - 14ABC OPS CHECK FAILED. 20-21ABC OPS CHECK GOOD. AFT GALLEY CEILING LEFT SIDE OPS CHECK GOOD. IAW AMM 33-51-06. R & R POWER SUPPLY REPLACEMENT FOR ROW 13 - 14ABC, STILL FAILED OPS CHECK. IAW AMM 33-51-06. REPLACED THE LAMPS FWD LT OVERWING EXIT EMERGENCY LIGHT, OPS CHKD GOOD IAW AMM 33-51-04.