Tech performed ESA on 2 systems upstairs not working on arrival tech found loose fuse in disconnect tech secured system back up and running. Tech found leak in indoor evaporator coil for upstairs system with lots of corrosion to condenser, downstairs compressor ohming caution and runs very loud in 1st stage also has lots of corrosion to condenser tech recommends replacing both systems due to age and challenges field supervisor set up to speak with customer about options. Bill for repair tech got approval from customer.