What was found
AIRCRAFT WAS GROUNDED: ON APPROACH TRAILING EDGE FLAPS WERE SPLIT AT FLAPS 25 AND RIGHT FLAPS BETWEEN 15 AND 25 DEGREES WITH HANDLE IN THE FLAPS 30 POSITION. QRH PROCEDURE WAS ACCOMPLISHED WITH HANDLE IN THE 15 DEGREE POSITION AND FLAPS APPROXIMATELY 15 DEGREES. MAINTENANCE TROUBLESHOT TRAILING EDGE FLAP SPLIT IAW FIM 27-51-00-810-820. REMOVED AND REPLACED FLAP POSITION INDICATOR IAW AMM 27-58-02. FAULT STILL CONTINUED. REMOVED AND REPLACED FLAP POSITION TRANSMITTER IAW AMM 27-58-01.