As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT NR 2941, THE CREW REPORTED HALFWAY DOWN TAKEOFF ROLL THEY RECEIVED A T/O CONFIG WARNING ON THE EICAS WITH SPOILER BOX ON THE EICAS RED. A SPOILER FAIL MESSAGE APPEARED AFTER PULLING OFF RUNWAY. THE ACFT TAXIED BACK TO THE GATE. MX INSPECTED AND REPLACED THE RT INBD SPOILER PROXIMITY SWITCH AND THE PROXIMITY SWITCH CONNECTOR. OPC CHECKS WERE GOOD.