What was found
AFTER TAKEOFF, , RECEIVED A FWD CGO BACKUP EICAS MESSAGE AND PANEL FAULT LIGHT. WENT AWAY 5 MINUTES LATER. REMOVED AND REPLACED AUX TEMP CONTROLLER IAW AMM 21-61-12, OPS CHECKED GOOD. TROUBLESHOT (WIRING CHECK), FROM D5602P PIN 11 TO PIN 10 FOUND 0.5 VOLT DROP, FROM D5602P PIN 11 TO D7052P PIN 13, FOUND A 0.4 VOLT DROP. REMOVED AND REPLACED RELAYS K1222 & K1221 IAW SWPM 20-81-22.VERIFIED 26 VDC AT D13570 PINS 4 & 12, VERIFIED 114.5 VAC VOLTAGE DROP BETWEEN D5988P PINS 49 AND 50. VERIFIED 26VDC VOLTAGE DROP BETWEEN D5988P PINS 47 AND 48.