Responded to no ac call. Indoor unit was running, outdoor unit was not. Opened service panel and found one of the line voltage legs burned off. Proceeded to check capacitor. Found capacitor below manufactures threshold. Noticed condenser coil was dirty, Also found contactor burned. Reconnected line voltage wire to contactor and replaced capacitor to further check system. System did not fire up determined that disconnect box was defective too. Can not further diagnose system until recommended minimum repairs were done. Customer declined repairs at this time