What was found
L ALPHA VANE ILLUMINATED. GROUNDED - YES. RELEASED PER MEL 30-8B LEFT ALPHA VANE HEAT INOP. INITIAL T/S FND LFT ALPHA VANE C/B OPEN. OPENED PANEL AND GVI BACK OF C/B. NO PROBLEMS FND. CLOSED PANEL AND C/B. DID B737-900 FIM 30-31 TASK 804. TURNED ON PITOT HEATERS- LEFT VANE LIGHT WENT OUT. HEATED FOR 30 MIN WITH NO FAULTS. REPAIR CONFIRMATION AND ETOPS GND VERIFICATION IS NML. REF FIM 30-31 TASK 804. RMVD CREW MEL INOP PLACARDS, C/N 06018448. NOTIFIED ARNIE SEAMC. C/B'S CONFIRMED CLOSED. NOTE: ALSO REMOVED FROM MEL 30-8B WITH NO SPECIAL PROCEDURES.