Repair Noisy AC Ductless Split

I am an HVAC Tech arriving on a air conditioning service call. One of the ac units were noisy. I go up onto the roof and find an LG ductless split condenser making noise. It sounded like a bad fan motor. The blade loosened off the shaft and broke the blade. Therefore I get a new blade and repair the HVAC unit. I test the ac unit after the repair. Sound glitch at 7:00 to 8:00 mark