Ac clean and tune. Cleared drain line and checked filter. Checked indoor filter with refrigerant sniffer. Found a few spots that indicated that there may be a leak. Cycled system. Checked and cleaned electrical compartment. Checked compressor and fan motor. Both tested lower. Capacitor is ok. Contactor is worn and rusted. Used coil cleaner on condenser coil. Hooked up gauges and tested pressures and temps. While checking pressures, fan was very noisy and was slowing down due to very heavy bearing wear. Unable to get accurate readings due to very high head pressures from lack of airflow. Looks as though system is low on charge and fan needs to be replaced along with several other parts. System is very worn. Average life of this unit is 14 years. This system is 30 years old and in very poor condition. System may cool for short period of time, but major failure is expected. Second opinion is recommended. Job complete.