As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO OPEN THE MAIN CABIN DOOR AT THE GATE. DOOR ASSIST SWITCH WAS STUCK IN THE CLOSE POSITION. INSPECTED AND FOUND NO TRIPPED CIRCUIT BREAKERS. CLEANED THE PAX DOOR POWER ASSIST SWITCH AND COMPLIED WITH OPS TEST OF DOOR ASSIST SYSTEM IAW AMM. OPS CHECKED GOOD.