No power in living room.....checked electrical panel, found circuit 9 controls affected electrical outlets. Turned off breakers and checked outlet under switch and found loose wire... pigtailed wires together and reconnected to outlet and testedroom outlets, all worked except light on back porch.....pulled fixture down and found burned neutrals and loose connection....replaced wirenut and twisted wires together and reinstalled fixture.. also noticed burned wires in outlets broken boxes rust and corrosion on breakers and busbar in electrical panel also double tapped neutrals...owner declined repairs....only diagnosed and made repairs to make the circuit work nothing replaced. Can only warranty labor for the first outlet to right of living room entrance...informed home owner of all findings ..recommend replacing all devices in home and panel...