Upon arrival tech was informed system was not cooling anymore. Tech found system completely void of Freon. Pressure tested with nitrogen and found leak on discharge line where it tees into condenser coil. Repaired leak and pressure tested system again with no further leaks. Pulled vacuum and charged system with 9lbs and 8oz of R410A. Tech attempted to adjust belt for blower motor but was to worn and had to replace with new belt. Tech installed 2-20x30x1 filters but will need to return with 2-20x30x2 filters. Performed full CMA at the end with no further challenges. System is back operating at this time.