Why didn't everything come back on after a power outage?

The short answer

When the power comes back, some things need help to restart. A safety switch may have tripped as the supply returned, appliances with their own controls may be waiting to be reset, and clocks and timers may have lost their settings. If an appliance stays dead on a power point that runs other things, a surge may have damaged it.

Start at the switchboard

If whole rooms are still dark while the neighbours are back on, open the switchboard door and look for a device in the off position. Safety switches sometimes trip when everything restarts at once. Reset it once without removing any covers. If it trips again or won't reset, leave it off: Energy Safe Victoria's advice is to call a licensed electrician if a safety switch won't reset. If nothing has tripped and part of the house is still dead, that needs testing too.

Appliances that need a nudge

Plenty of equipment doesn't restart on its own. Some air conditioners wait for the remote, and some ovens with electronic timers won't heat until the clock is set again. Garage door motors, pool and spa pumps, irrigation controllers and security systems may need resetting, or show a fault until they are. The modem and NBN connection box usually need a few minutes, and sometimes a restart, before the internet comes back.

Timers are the other catch. An older mechanical time switch on the board for off-peak hot water or a pool pump can stop during an outage and then run late, so the tank heats at the wrong time or not at all. If the hot water goes cold in the days after an outage, mention the timer when you book.

Signs a surge did damage

A spike as the power returns can take out electronics. Suspect a surge if an appliance shows no display or lights at all, smells of hot electronics, or if several unrelated things failed at the same moment. Test the power point with a lamp or phone charger you know works. If the point is live and the appliance is dead, the appliance is the problem, so leave it unplugged and don't open it.

Energy Safe Victoria advises turning off and unplugging appliances at the power point during an outage to help prevent damage from a surge. Leave one light switched on so you know when the power is back. A surge diverter at the switchboard, which captures voltage spikes before they reach your equipment, with surge-protected power boards for sensitive electronics, lowers the risk next time.

What you can safely do now

Check the neighbours and streetlights first. If they're still out, it's a network outage.
If the lights that work are dim or flickering, leave the switchboard alone and contact your electricity distributor.
Reset a tripped safety switch once. If it trips again, leave it off.
Set clocks and timers, and restart the modem and anything with its own power button.
Unplug an appliance that stays dead on a working point, and write down what failed and when.

Services that can help

Power Outages & Loss of PowerWhole house or half the house out? What to check, and when to call.Surge ProtectionSurge diverters fitted at the switchboard to protect your appliances.Electrical Repairs & Fault FindingFinding out why circuits trip, flicker or go dead, then fixing them.

Sources for this answer

3 sources, with the date each was checked

1.Energy Safe Victoria: Locate your electricity box outside your home and check whether the safety switch has tripped. If it has tripped, reset the switch. If the switch won’t reset, call a licensed electrician. Accessed 30 September 2026.
2.Energy Safe Victoria: In the event of a power failure turn off and unplug all electrical appliances at the powerpoint. This will help to prevent equipment damage in the event of a power surge. Accessed 30 September 2026.
3.Energy Safe Victoria: Surge diverters protect the property from voltage surges such as those resulting from a lightning strike. The surge diverter captures the voltage spikes in the wiring that would otherwise be transferred into the… Accessed 30 September 2026.

General information for homes in Victoria. Every installation is different, so treat this as a starting point. Where this answer refers to Victorian safety or rental rules, the sources above have the current requirements.