What was found
CREW REPORTED EICAS MSG SPS 2 INOP & STICK PUSHER FAIL APPEARED CLIMBING THROUGH FL270ISH. RAN QRH AFTER FOLLOWING QRH STEP TO PUSH OUT THE STALL PROTECTION 2 WE GOT ANOTHER MASTER CAUTION FOR SPS1-2 INOP. CONSULTED WITH MAINTENANCE AND RETURNED TO DAL. CORR ACTION R&R'D SPS COMPUTER AND SPS CONTROL PANEL OPS TEST GOOD. SPS COMPUTER (PART OFF: 0020BN4, SERIAL OFF: 599) (PART ON: 0020BN4, SERIAL ON: 1449) STALL PROTECTION PANEL (PART OFF: 145-34172-407, SERIAL OFF: 1456368265)(PART ON: 145-34172-403, SERIAL ON: 145564).