What was found
WHILE WORKING T/C 78273000, INTERROGATE THE FMC CDU FOR ENGINE FAULTS, EEC DATA FOR CHANNEL B ON NR 2 ENG NOT AVAILABLE SHOWS. FOUND CIRCUIT BREAKER POPPED AT P6-2 ROW D, COL 7, ENG 2 ALT POWER CHANEL B. ACFT GROUNDED. REMOVED ON NR 2 EEC CONN DP0202, INSPECTED SAME & RECONNECTED DP0202. OPENED P6-2 CB PANEL INSPECTED C/B & ASSOCIATED WIRING CHECK GOOD. UPON ENTERING NR 2 EEC BITE SAME C/B POPS AGAIN. REMOVED FORM EEC, C/B REMAINS IN DURING EEC BITE. SUSPECT BAD EEC. R & R NR 2 ENG EEC IAW MM 73-21-60-000-801-F00/400-801-F00. ACCOMPLISHED EEC INSTALLATION TEST IAW POWER PLANT TEST REF TABLE 71-00-00-800-811-F00, TEST FOOTNOTE 4 FADEC SYS TEST MM 73-21-00-700-802-F00, ALL TESTS PASSED OK FOR SERIVCE.