What was found
F/A REPORTS ENTIRE REAR GALLEY WITHOUT POWER CHECKED BOTH COCKPIT CAB/UTL AND FE/FDSS SEAT SWITCHES ARE ON. ACFT GROUNDED. PERFORMED BUS POWER CONTROL UNIT BITE IAW FIM 24-41, TASK 801. NO FAULTS NOTED. DURING BPCU BITE, FOUND NR 4 GALLEY POWER WOULD OPERATE NORMALLY AND WOULD FAIL AGAIN WHEN BPCU BITE COMPLETED. R & R, AND TESTED BUS POWER CONTROL UNIT IAW AMM 24-41-21-000-801, AMM 24-41-21-400-801. OPS NORMAL. PERFORMED TEST OF GALLEY POWER IAW AMM 24-51-11-400-801, PARA G 2. OPS NORMAL.