What was found
REJECTED T/O FOR CONFIG SPOILERS EICAS WARNING. RAN QRH, TRIED TO T/O AGAIN, SAME ISSUE. RAN QRH AND RETURNED TO GATE. REMOVED SPEED BRAKE HANDLE POSITION SWITCH S493 IAW AMM 31-51-03-4, AND REPLACED TB190 XA1 AND YA1 IAW SWPM 20-90-11, AND RETERMINATED NUMEROUS WIRES WITH NEW PINS IN BOTH OF THESE TERMINAL BLOCKS. WORK DONE USING WDM 27-62-11, 31-31-31, AND 32-42-12. PERFORMED TAKEOFF WARNING CHECK PER AMM 31-51-03-4. ALSO, TAXIED AIRCRAFT OUT TO RUNWAY AND TRIED TO DUPLICATE PIREP FOUND ALL SYSTEMS OPS CHECKING GOOD, AT FLAPS 1,5,15. THE PART THAT WAS THE FIX WAS PN 10AT304-1 SPLR HANDLE SWITCH. OK FOR SERVICE.