I arrived to perform a diagnostic on an air conditioner. Upon arrival customer stated that the a/c isn't cooling and that he had to charge system in the beginning of season. Noticed fan motor is working and the compressor is not, Found 45/5 dual capacitor has failed, Replaced capacitor and system kicked on operational normal, Checked refrigerant pressures and found system slightly low on refrigerant, customer isn't interested is charging system at this time, and will give us a call in fall to get an estimate for new system replacement. System operational and cooling at departure.