What was found
ENG 2 GEN ON APU ON BURNING ELECT SMELL WITH SO RCE OFF LIGHT L EFT SIDE HAD FAULTS ON BPCU, APU GCU & #1 GCU. ATTACHED PICS. ALSO PERFORMED FIM 24-21 TASK 823 ALL CHECKS NORMAL UP TO STEP E.(12). WILL NEED TO CONTINUE WITH E.(13) ENGINE RUNS. COMPLETED FIM TASK AS REQUIRED. UNABLE TO DUPLICATE. PERFORMED ENGINE RUNS WITH MULIPLE VARIATIONS OF BLEED AND ELECTRICAL LOADS. NO FAULTS AND NO ODOR. INSPECTED BEHIND C/ B PANELS IN E&E. NO SIGNS OF, OR SMELLS ASSICIATED WITH, ANY ELECTRICAL SHORTS. R&R#1 ENG GCU REF AMM 24-21-81. OPS CK GOOD.