As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEATHER RADAR STAYS IN NORMAL EVEN WHEN AUTO IS SELECTED. AUTO MODE CAN BE OBTAINED BY DEPRESSING AND HOLDING DOWN THE AUTO BUTTON, WHEN YOU LIFT OFF THE BUTTON IT WILL GO BACK TO MANUAL MODE. ACFT GROUNDED. REPLACED THE WEATHER RADAR CONTROL PANEL IAW AMM 34-43-91-400-801, AND 34-43-00-730-801-001. OPS. CHECKED GOOD.