What was found
AFTER T/O AFT GALLEY PIGTAIL SPARKING AND POPPING NOISE. AFT GALLEY LOST PWR2 OF 5 PNL'S. FWD GALLEY ALSO LOST PWR. RT HYD QUANTITY WENT TO ZERO AND RETURNED TO NORM TWICE, STABILIZED AT 0.93. RT FUEL QUANTITY BLANKED AND RETURNED TO NORM. PULLED C/B N52 IN AFT GALLEY AND U34, P11 (R AFT GALLEY). RESET C/B U34, P11 AND PWR RETURNED TO FWD GALLEY, AND AFT GALLEY EXCEPT CART CONTROL N51, N52, N53. PULLED C/B'S N51, N52, N53<>104881 SAMC TEXT: PULLED C/B'S N51, N52, N53 AS PRECAUTION. C/B N52 FOR ASSOCIATED PIGTAIL DID NOT TRIP ON INITIAL SHORT. REPLACED CABLES P51, 52 AND 53, TESTS OKAY.