What was found
PTIM MAIN INOPERATIVE, BACKUP PITCH TRIM INOPERATIVE EICAS DISPLAYED IMMEDIATELY AFTER T/O. R & R HORZ STAB CTL UNIT. REMOVED HAS UPPER BOLTS. C/W MOVEMENT OF STAB UP/DOWN, NO DEFECTS NOTED. NO DAMAGE OF CORROSION NOTED ON PIVOT BEARING. REINSTALLED HAS UPPER BOLTS. COMPLIED WITH STABILIZER BACKLASH CHECK, WITHIN LIMITS. VERIFIED MAIN & BACKUP PITCH TRIM SWITCHES DO NOT STICK. PERFORMED LOCKOUT LOGIC TEST. OPS CHECK GOOD. VERIFIED BONDING RESISTANCE SATIS ON GROUND STUDS. PERFORMED VOLTAGE, CONTINUITY, & MEGOHM CHECKS ON MAIN PITCH TRIM SYS. INSPECTED & CLEANED TRIM PANEL, HSCU, & HSA CONNECTORS. PERFORMED HORIZONTAL STAB ELECTRICAL OPS CHECK. R & R SPC. OPS CHECK GOOD. R & R HSA. OPS CHECK GOOD.