What was found
FLASH FOLLOWED BY BANG AND SMOKE ODOR FROM RT REAR CORNER OF FLIGHT DECK, SMOKE ODOR DISSIPATED AFTER 30 SEC. ACCOMPLISHED GENERAL WALKAROUND INSP IAW AMM 05-20-00, NO UNUSUAL FINDINGS. ACCOMPLISHED GENERAL VISUAL INSP OF ALL E/E COMPARTMENTS, NO UNUSUAL FINDINGS OR ODORS NOTED. ACCOMPLISHED BITE CK OF WHC 1 & 2 IAW AMM 30-42-00, TEST OK. ON COCKPIT INSP FOUND SEVERAL O/H LIGHTS INOPERATIVE, REPLACED THE LAMPS IAW AMM 33-12-11, CKS OK. ACCOMPLISHED EMERGENCY GEN TEST IAW AMM 24-24-00, TEST OK. WHILE ACCOMPLISHING STATIC INVERTER TEST, FOUND BUSS TIE P/B SWITCH NOT FUNCTIONING CORRECTLY & WITH SLIGHT ODOR, REPLACED P/B SWITCH, 10 XU, IAW ESPM 20-45-11, STATIC INV TEST OK IAW AMM 24-28-00.