There's nothing more frustrating than sitting down to stream your favourite show, join a video call, or finish an important task online, only to find your NBN connection has dropped out or slowed to a crawl. The good news is that most NBN issues are simple to diagnose, and many can be fixed without picking up the phone.
In this guide, we'll walk through the most common causes of NBN problems, step-by-step troubleshooting paths for dropouts and complete outages, a quick equipment checklist, and a clear guide on when to escalate to support.
Quick Checks Before You Do Anything Else
Before diving into deeper troubleshooting, run through these basics, as they solve a surprising number of connection issues:
- Power Cycle Your Modem And Router. Turn them off, wait 30 seconds, then turn them back on. This clears temporary glitches and refreshes your connection.
- Check Your Cables. Loose or damaged cables between your wall socket, NBN connection box, and router are a common (and easily overlooked) culprit.
- Check For An Outage. Visit NBN Co's official network status page or your provider's status page to see if there's a known issue in your area before assuming the problem is on your end.
If your connection is still playing up after these steps, it's time to look a little closer.
Checking For Provider-Side And Outage-Related Issues
Before assuming the fault is in your home, it's worth ruling out issues sitting outside your control. Provider-side and network outages are more common than people expect, and there's no point troubleshooting your own equipment if the problem is upstream.
- Check NBN Co's Outage Checker. NBN Co's network status tool shows known outages or planned maintenance affecting your address, separate from any issue with your provider.
- Check with Your Provider. Most providers are able to identify if there is an outage at your premises. Get in touch with your provider and they will be able to run further tests on your address.
- Look For Scheduled Maintenance Notices. Providers often notify customers in advance by email or SMS, which is worth checking if your connection dropped out at a predictable time.
- Check For Area-Wide Weather Or Infrastructure Events. Storms, power outages, and damaged infrastructure in your area can affect NBN service even when your home equipment is working perfectly.
- Ask Your Neighbours (If Possible). If others on the same network in your area are also affected, it's a strong sign the issue is provider-side rather than something in your home.
If an outage is confirmed, there's usually nothing to troubleshoot on your end. The best step is to wait for the network to be restored or contact your provider for an estimated resolution time.
Common NBN Connection Issues And What Causes Them
Frequent Dropouts
If your internet keeps disconnecting and reconnecting, this is often caused by loose cabling, interference from other electronics, or an ageing router struggling to keep up with your household's demand.
Slow Speeds
Slow speeds can stem from several sources, including too many devices competing for bandwidth, an underpowered router, network congestion during peak hours, or simply being on a plan that doesn't match your household's usage.
No Connection At All
A complete outage is usually either a provider-side issue (check for outages first) or a hardware fault, such as a disconnected cable, a faulty NBN connection box, or a router that needs resetting.
Wi-Fi Works In Some Rooms But Not Others
This is a coverage issue rather than a connection issue. Thick walls, distance from the router, and building materials can all weaken your Wi-Fi signal in certain areas of your home.
Troubleshooting Path: Connection Dropouts
If your connection keeps cutting in and out rather than staying fully down, work through these steps in order:
- Note The Pattern. Does it happen at a specific time of day, with specific devices, or randomly? This helps narrow down whether it's congestion, interference, or hardware.
- Check Physical Connections. Ensure all cables between the wall socket, NBN connection box, and router are firmly connected and undamaged.
- Move Or Isolate Your Router. Interference from microwaves, baby monitors, or other electronics can cause intermittent drops, so try relocating the router away from other devices.
- Reduce Connected Devices Temporarily. If dropouts happen when many devices are active, your router may be struggling to keep up.
- Check For Overheating. Routers left in enclosed spaces or stacked with other equipment can overheat and disconnect intermittently.
- Update Router Firmware. Outdated firmware can cause instability, so check your router's admin panel or manufacturer's app for available updates.
- Still Dropping Out? If dropouts continue after these steps, especially over multiple days, this is a sign to contact support rather than continue troubleshooting alone.
Troubleshooting Path: Complete Loss Of Service
If you have no connection at all, work through these steps in order:
- Check For A Known Outage First. Confirm via NBN Co's outage checker and with your provider before doing anything else.
- Check The Lights On Your NBN Connection Box. A steady power light and a stable "NBN" or "internet" indicator light are good signs; blinking, red, or no lights usually point to a fault.
- Power Cycle All Equipment. Turn off the NBN connection box and router, wait 30 seconds, then power the NBN box back on first, followed by the router.
- Check All Physical Connections. Loose or damaged cables at the wall socket, NBN connection box, or router are a common cause of total outages.
- Try A Direct Connection. If possible, connect a device directly to the NBN connection box (or router) via ethernet cable to check whether the issue is with Wi-Fi specifically or the connection itself.
- Confirm It's Not Isolated To One Device. Test with a second device to rule out a single device's Wi-Fi settings as the cause.
- Still No Connection? If you've worked through all of the above and still have no service, this is the point to contact your provider for support, as continuing to troubleshoot alone is unlikely to resolve a deeper hardware or line fault.
Is Your Router The Problem? How To Check If You Need An NBN Compatible Router
Not all routers are built the same, and an outdated or incompatible router is one of the most common (and most overlooked) causes of ongoing NBN issues.
Signs your router might be the problem:
- It's more than 3 to 4 years old.
- It doesn't support the speed tier of your NBN plan (e.g., you're on a fast plan but your router caps out well below that speed).
- It struggles once you connect more than a handful of devices.
- It was supplied for an older connection type and hasn't been updated since you moved to NBN.
An NBN compatible router should support your specific connection type (FTTP, FTTC, HFC, Fixed Wireless, and others) and be rated to handle the speed tier you're paying for. If you're on a higher-speed plan but still using an entry-level router, you may not be getting the performance you're paying for.
Support Checklist: Common Hardware And Equipment Faults
Before contacting support, it helps to have already checked (and noted the results of) the following. This speeds up diagnosis significantly:
- Power Lights. Are all lights on your NBN connection box and router showing normal status (not red, blinking, or off)?
- Cable Condition. Are all cables firmly connected, undamaged, and free of visible wear or kinks?
- Power Source. Is the NBN connection box plugged into a working power outlet (ideally not a power board that's been switched off)?
- Router Age And Model. Do you know how old your router is and whether it's rated for your current plan's speed tier?
- Overheating Or Placement. Is your equipment well-ventilated and not stacked with other devices?
- Recent Changes. Has anything changed recently, such as a new device added, a firmware update, a house move, or a storm or power outage in the area?
- Device Scope. Is the issue affecting one device, several devices, or the entire household?
- Outage Check Result. Have you already checked NBN Co's outage checker and your provider's status page?
Having this information ready when you contact support means faster resolution and fewer back-and-forth questions.
When To Contact Support: A Clear Escalation Path
Not every issue needs a phone call, but knowing when to escalate saves time and frustration. Use this as your guide:
Level 1: Try It Yourself First
- A single device is having trouble (try reconnecting it to Wi-Fi).
- You haven't yet power cycled your equipment.
- You suspect a loose cable or a Wi-Fi coverage issue in one part of the home.
Level 2: Investigate Further Before Calling
- Dropouts are frequent but the connection isn't fully down (work through the dropout troubleshooting path above).
- Speeds seem slow but the connection is stable (check device count, plan speed tier, and router age).
Level 3: Contact Support
- There's no known outage but you still have no connection after power cycling and checking cables.
- Dropouts have continued for more than a day or two despite troubleshooting.
- Lights on your NBN connection box indicate a fault (red, blinking, or off).
- The issue affects multiple devices and rooms, not just one.
- You suspect a fault with the NBN connection box or line itself; this requires a technician.
- You've completed the support checklist above and the issue remains unresolved.
When you do contact support, having your checklist results on hand, including your outage check, light status, cable condition, and which devices are affected, will help resolve the issue faster.
If an issue remains unresolved after contacting your provider, Australian consumers can escalate unresolved phone and internet complaints to the Telecommunications Industry Ombudsman (TIO), a free, independent dispute resolution service. This is intended as a last resort after your provider has had a fair opportunity to fix the issue directly.
How Ezi Broadband Can Help
If you're consistently running into NBN issues, it might be time for a check-up on your setup, not just your connection, but your router too. Our team can help you troubleshoot ongoing problems, confirm whether your router is compatible with your plan's speed tier, and recommend an upgrade if it's holding you back.
Struggling with a connection that just won't cooperate? [Get in touch with the Ezi Broadband team] and we'll help you get back online, reliably.