Upon arrival customer stated that system for upstairs was not working and that they had another company out, they replaced a transformer but still could not get system to work. After inspection of system found that unit had a failed contactor that caused the transformer to fail. Advised customer of issue. Checked over all of system found blower capacitor is bad, blower wheel very dirty, system is very aged for furnace. Outdoor capacitor tested good. Recommended cleaning blower wheel, changing bad blower capacitor, clean blower wheel, add wet pan switch, change bad contactor. Customer only wanted to have contactor, blower capacitor and new transformer installed today. Made all repairs for system and unit is back up and cooling at this time. Washed outdoor condenser coils. Refrigerant levels tested good at this time.