What was found
APPROX 15 MIN AFTER T/O THE WEATHER RADAR FAIL 9WXR FAIL ANNUNCIATED ON THE CAPT'S SIDE. ANNUNCIATION EXTINGUISHED APPROX 5 MIN LATER. WITH RADAR IN "AUTO" MODE, DISPLAYS (BOTH) SHOWED ABOUT 80% RED WHILE VISUALLY IN CLR CONDITIONS. RADAR SEEMS TO OPERATE NORMALLY. GROUNDED - YES. RELEASED PER MEL 34-15H AUTO TILT MULTI SCAN FUNCTION INOP. DUE TO HISTORY IN REGARDS TO AUTO TILT MODE VERSUS MANUAL MODE, OPENED C/B D13 ON P6-1, MIG 51A INSTALLED. REMOVED AND REPLACED WEATHER RADAR CONTROL PANEL PER B737-800 AMM REF 34-43-91-400-801/34-43-91-000-801. REMOVED MIG51A, CLOSED C/B, OP'S CK'S GOOD.