As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD STATIC NOISE IN COCKPIT AFTER SHUTDOWN AT GATE. FOUND WX RADAR TO TURN ITSELF ON WHEN TURNED OFF AND STAY IN TEST MODE. PULLED RT C/B AND LOUD STATIC NOISE WENT AWAY. REMOVED AND REPLACED WXR RDR RT PER MM 34 43 41. WXR RADAR OPS NORMAL PER MM 34 43 00.