As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE/FUMES, FLIGHT 5061 AIR RETURN, PILOTS REPORTED THAT WHILE CLIMBING THROUGH 21.5 FOR 240 THEY NOTICED AN ELECTRICAL FUME ODOR. PILOTS PERFORMED WINDSHILED FAULT EMERGENCY CHECKLIST. TURNING OFF WINSHIELD ANTI-ICE GOT RID OF THE FUMES. MAINT SECURED A LOOSE POWER WIRE AT THE CONNECTOR FOR THE CAPTAINS WINDSHIELD DE-ICE SYS. OPS TEST WAS GOOD MM 56-10.