Missing Free-to-Air TV Channels? What to Check First

Missing free-to-air television channels do not automatically mean that the rooftop antenna needs replacing. The television may be on the wrong source, a channel may be hidden, the aerial lead may be loose, a splitter or amplifier may have failed, the local transmitter may be off air or the television may be tuned to the wrong transmitter.

Work through the following checks in order. Begin inside the home before arranging rooftop work, and do not repeatedly retune the television until you know that a usable antenna signal is reaching it.

Before you begin

Do not climb onto the roof, enter a roof space or adjust an outdoor antenna yourself. Falls, overhead powerlines, fragile roofing, heat and concealed electrical equipment can cause serious injury. Inspect an outdoor antenna only from the ground.

Turn equipment off and arrange appropriate assistance if you notice:

A damaged power cable, plug or power point.
A burning smell, smoke, crackling or unusual heat.
Water damage around the television, wall socket or connected equipment.
A fallen antenna, loose metalwork or cabling near powerlines.

Confirm that the channels are genuinely missing

First check what the television is displaying. A blank screen, an empty streaming-app guide and a missing broadcast channel are different problems.

Press Source or Input and select TV, Live TV, Antenna or DTV.
Open the television's broadcast channel list rather than a streaming service, FAST-channel app, Fetch, Foxtel or set-top-box guide.
Enter a known channel number directly with the number buttons if the remote has them.
Check whether the channel appears under All Channels but not Favourites.
Make sure the television is not showing a filtered list such as Favourites, Radio, Data or Recently Watched.

If an external set-top box or recorder supplies the channels, use that device's remote and channel list. Retuning the television will not repair a channel list stored inside a separate box.

Write down exactly what has disappeared

Do not describe the fault only as “some channels are gone”. Record which services still work, which are missing and what appears on screen.

Are all free-to-air channels missing?
Is only one broadcaster's group missing, such as ABC, SBS or one commercial network?
Are the main channel and its related multichannels all missing?
Does the television say No Signal, show a black screen or remove the channel from the list entirely?
Is the picture pixelated before it disappears?
Does the problem occur at a particular time, during rain or when an appliance is operating?

Australian digital television services are transmitted in groups on different frequencies. A weak or damaged antenna system can lose one frequency group while other broadcasters remain clear. Receiving SBS and commercial television does not prove that the antenna is healthy enough to receive ABC, and the reverse is also true.

Check whether there is a local transmitter outage

Before changing the channel list, check whether the missing broadcaster has reported planned maintenance or an outage. The ABC Frequency Finder lists ABC services, coverage and known or planned transmission interruptions. Other broadcasters may publish service information or confirm a fault through their viewer-support channels.

Ask a nearby neighbour who uses a separate antenna system whether the same services are missing. A matching fault at several nearby homes may point to a transmitter or area-wide reception issue. A neighbour in the same apartment building may share your distribution system, so that comparison does not completely separate a building fault from a broadcast fault.

If a known outage is underway, wait for service to return before retuning. Scanning while a frequency is unavailable can cause some televisions to remove its channels from the stored list.

Check the correct services and transmitter for your address

Enter the full address into the Australian Government's mySwitch reception tool. It can show:

The expected digital television coverage at the address.
The transmitter expected to provide the strongest signal.
The available channels and frequencies.
The direction and polarisation recommended for the antenna.
Known reception information for the area.
Whether Viewer Access Satellite Television may be relevant in a poor-coverage or remote area.

This is especially important in locations that can receive signals from more than one transmitter. An automatic scan may store a weaker distant service first, create duplicate channels or place unexpected versions of services at high channel numbers.

Do not guess manual-tuning frequencies or copy them from a different suburb. Use the information for the actual address and exact transmitter.

Check the antenna lead at both ends

A loose or damaged fly lead is one of the simplest causes of missing channels.

Turn the television off.
Locate the round antenna cable connected to the television's ANT IN, RF IN or aerial input.
Check that it is connected to the antenna input, not a satellite connector or unused output.
Remove and firmly reconnect the lead at the television and wall socket.
Inspect the accessible cable for crushed sections, sharp bends, loose plugs, corrosion or exposed wire.
Turn the television on and test the missing services again.

Keep the fly lead reasonably short and do not coil a large amount beside power adaptors. ACMA recommends good-quality quad-shield RG6 coaxial cable for the connection. Do not open the wall plate or alter fixed cabling unless you are authorised and competent to do so.

Try a known-good antenna fly lead

If another suitable lead is available, temporarily connect it directly between the wall socket and television. This can identify a failed plug or cable without changing the television's settings.

Use a proper 75-ohm television coaxial lead. A lead can look undamaged while having a broken centre conductor or poor termination inside a plug.

Bypass splitters, recorders and other equipment

Every splitter and pass-through device can reduce or disrupt the signal. For testing, connect the wall antenna socket directly to the television and bypass:

Unpowered splitters.
Set-top boxes and personal video recorders.
Old VCRs or DVD recorders.
Surge boards with antenna connections.
Adaptors, joins and extension cables.
Signal amplifiers or boosters that can be safely bypassed.

If the channels return, reconnect one device at a time. The item after which the fault returns is the strongest suspect. Do not disconnect a recorder while it is recording or updating.

Check whether an amplifier has lost power

Some homes and shared buildings use a masthead amplifier or distribution amplifier. It may receive power through a small indoor injector or power supply near a television, cupboard or distribution point. If that supply is unplugged, switched off or faulty, several channels may disappear.

Check only equipment that is safely accessible and clearly belongs to the antenna system. Do not substitute a random power adaptor. The voltage, polarity and connection method must match the installed equipment.

A booster is not automatically a cure for weak reception. Too much amplification can overload a television tuner, amplify interference and make reception worse. ACMA recommends using amplification only where necessary and having the system assessed properly.

Compare another television or antenna outlet

If the home has another television or wall outlet, comparison testing can narrow down the problem.

One television fails on a known-good outlet: check that television's tuner, settings and channel list.
Two televisions fail on one outlet: suspect the outlet, branch cable or splitter.
Every outlet loses the same channel group: suspect the common antenna, amplifier, distribution equipment or transmitter.
One outlet receives fewer channels than another: the signal level may be marginal or the branch may have a cable or termination fault.

Move equipment only if it is safe and manageable. Do not risk damaging a large television merely to perform this test; a small known-good television or set-top box is easier to compare.

Check signal strength and signal quality

Many televisions provide signal information under Channel, Broadcasting, Support, Self Diagnosis or Manual Tuning. Open the affected frequency or channel and note both readings if available.

Signal strength indicates how much signal reaches the tuner.
Signal quality indicates how cleanly the digital information can be decoded.

A high strength reading with poor quality can indicate interference, overload, reflections or the wrong transmitter—not a need for more amplification. Reading scales differ between brands, so use them for comparison rather than treating a particular percentage as universal.

Photograph the readings on a working group and the missing or unstable group. This is useful evidence for an antenna technician.

Restart the television or set-top box

A temporary tuner or software fault may clear after a proper restart.

Use the equipment's Restart option if available.
Otherwise turn it off and disconnect it from power if the manufacturer permits.
Wait approximately 60 seconds.
Reconnect it and allow startup to finish.
Check the existing channel list before scanning.

Do not disconnect power during a software update. Restart external tuners and recorders separately if they—not the television—store the channels.

Check whether channels are hidden, skipped or locked

A channel can remain tuned but disappear from normal channel-up and channel-down navigation.

Open Channel List, Edit Channels, Channel Manager or a similar menu and check for:

Hidden or skipped channels.
A Favourites-only filter.
Deleted channels.
Parental locks or profile restrictions.
Duplicate regional services placed elsewhere in the list.
Radio or data services selected instead of television.

Restore the affected service to the main list if it is present. Record any customised favourites before performing a full scan because the scan may alter them.

Confirm the television is set to Antenna or Terrestrial

During tuning, some televisions ask for the signal source. For Australian free-to-air television through a normal rooftop antenna, choose Antenna, Air, Terrestrial or DTV, depending on the brand.

Do not choose Cable or Satellite unless the building or service provider specifically requires it. Selecting the wrong tuner type can produce an empty or incorrect channel list.

When an automatic retune is appropriate

An automatic retune is reasonable when:

The broadcaster has changed its service and advises viewers to rescan.
The television is newly installed or has moved to a different reception area.
The antenna cable is confirmed connected and working.
There is no current transmitter outage.
A restart and channel-list check did not restore the services.

Menu names vary, but look for Auto Tuning, Auto Scan, Channel Search or Digital Tuning. Select Antenna or Terrestrial and scan for digital channels.

Allow the scan to finish without turning the television off. Then check the full channel list, not only Favourites.

Why you should not retune too early

Retuning does not strengthen a weak signal or repair an antenna. It only searches for services that the tuner can detect at that moment.

If the antenna is disconnected, an amplifier has lost power or a transmitter is temporarily off air, a scan may save fewer channels than before. Record the current channel list and correct the obvious signal problem first.

Repeated scanning can also store services from a weaker transmitter in areas where several transmitters are receivable. This can leave duplicate channels, wrong regional news or unreliable services at unexpected numbers.

Use manual tuning only with the correct local information

If automatic tuning selects the wrong transmitter or misses one frequency group, ACMA advises that manual tuning may help. Use the frequencies and transmitter details shown by mySwitch for the exact address.

Record or photograph the existing channel list.
Open Manual Tuning or Manual Channel Search.
Select the correct digital terrestrial tuner.
Enter the frequency or channel information for the intended transmitter.
Observe the television's strength and quality readings.
Save the services only when the correct signal is identified.

Do not change advanced tuning parameters at random. If the manual-tuning screen does not match the official instructions for the model, stop and consult the manufacturer or an antenna technician.

Check for household interference

Electrical interference can remove one group of digital channels, cause pixelation or create brief dropouts. ACMA and ABC identify possible sources including:

Faulty LED lights, dimmers and power supplies.
Modems, routers, computers and chargers.
Solar inverters and smart-home equipment.
Refrigerators, washing machines and dryers.
Pool pumps, chlorinators and power tools.
Electric fences, security equipment and garage-door systems.
Faulty amplifiers, power boards or extension leads.

Note whether the problem begins when a particular appliance, light or motor operates. Switch off only normal household devices that are safe for you to control, then see whether reception changes. If a faulty electrical appliance is suspected, stop using it and have it checked by an appropriate qualified person.

Do not remove electrical safety devices or interfere with a neighbour's equipment.

Consider mobile-signal overload

ACMA notes that a sudden change affecting several channels can sometimes involve signals from a nearby mobile tower, particularly within about one kilometre and where an antenna amplifier is installed.

A technician can measure the signals and determine whether a suitable 4G or mobile-band filter, amplifier adjustment or antenna-system change is required. Do not buy a random filter or stronger booster without measurements; it may not match the cause.

Notice whether weather changes the fault

Rain, wind, heat and atmospheric conditions can reveal a marginal antenna system.

Wind may move a loose or poorly secured antenna.
Water can enter damaged coaxial cable, connectors or antenna components.
Wet foliage in the signal path can reduce reception.
Atmospheric ducting can allow distant transmitters to interfere with local services, particularly in warmer conditions.
Heavy rain can occasionally affect the feed to some regional transmitters.

A service that disappears whenever it rains is not something a retune should be expected to cure. Record the weather, time and affected channels and have the system inspected if the pattern continues.

Inspect the antenna safely from the ground

From a safe position, compare the antenna with nearby installations that appear to serve the same area. Look for:

Obvious storm damage or a changed direction.
Broken, bent, missing or rusty elements.
Loose cable hanging from the mast.
Antenna movement in light wind.
New trees, buildings or structures in the signal path.

Do not assume every neighbouring antenna should point in exactly the same direction; different homes may use different transmitters. ACMA says antennas commonly last around 10 to 15 years, although the actual life depends on construction, location and exposure.

If you live in an apartment, village or complex

A unit, townhouse, retirement village or similar property may use a shared master antenna and distribution system. Ask the building manager, strata manager or site manager:

Whether other residents have reported the same missing channels.
Whether an amplifier or distribution system has lost power.
Whether recent electrical, roofing or communications work was completed.
Whether the building has an approved antenna contractor.

Do not arrange unauthorised work on common property. If only your outlet is affected, the building's contractor can compare it with a known-good outlet and distribution point.

If you use an indoor antenna

Indoor antennas are more sensitive to position, building materials, movement and household interference. If an indoor antenna is the only option:

Place it near a window facing the expected transmitter where practical.
Move it away from the television, router, power adaptors and metal objects.
Try small changes in position and orientation while watching signal quality.
Confirm that an amplified model has the correct power supply connected.
Rescan only after finding the best position and confirming no outage.

An indoor antenna may never provide reliable reception in a shielded building or weak-signal area. ACMA generally recommends a correctly selected and installed outdoor antenna.

Update the television software

If the signal readings look normal but the channel list behaves incorrectly, check for a software update through the television's normal support menu. Use only the built-in updater or firmware for the exact Australian model from the manufacturer's official website.

Keep the television on stable power during the update. Restart it afterwards and check the existing channels before retuning.

Do not perform a factory reset too early

A factory reset may remove Wi-Fi details, app sign-ins, tuned channels, favourites, picture and sound settings, accessibility options and connected-device settings. It will not repair a corroded antenna, damaged cable, failed amplifier or transmitter outage.

Consider it only when official model-specific troubleshooting recommends it and the signal path, outage status, tuning source and channel scan have already been checked. Photograph important settings and confirm account passwords first.

When the television tuner may be faulty

A tuner fault becomes more plausible when:

Another television receives every expected channel from the same lead and outlet.
The affected television receives no signal on multiple known-good outlets.
The antenna socket on the television is loose or physically damaged.
The television repeatedly loses stored channels despite stable measured reception.
An external digital set-top box works correctly on the same antenna connection.

Do not open the television. Compare the likely repair cost with a compatible external tuner or set-top box, and check the warranty, retailer support and Australian consumer guarantees before paying.

When to call an antenna technician

Professional testing is sensible when:

Several televisions or outlets lose the same services.
One frequency group remains weak or missing after correct manual tuning.
Reception changes with rain, wind or time of day.
The antenna looks damaged, corroded or misaligned from the ground.
The system uses old cabling, several splitters or an unexplained amplifier.
A recent storm, roof job, renovation or building work preceded the fault.
Mobile-tower overload or electrical interference is suspected.
The outlet or fixed cabling requires inspection.
mySwitch indicates marginal coverage or a specialised antenna arrangement.

Ask the technician to measure signal strength, signal quality and interference at the antenna and affected outlets, identify the transmitter being received and explain the fault before replacing equipment. A stronger amplifier is not a substitute for correct diagnosis.

What to record before calling

Your suburb or postcode and whether the property is a house or shared building.
The exact missing and working channel groups.
Any No Signal message, pixelation or error code.
When the fault began and whether it followed a storm, move or building work.
Whether neighbours are affected.
Whether every television and outlet has the same problem.
Whether a direct wall-to-television connection was tested.
Whether another fly lead or television was tested.
Whether an amplifier is installed and powered.
The transmitter and expected frequencies shown by mySwitch.
Signal-strength and signal-quality readings for working and failing groups.
Weather, time-of-day or appliance patterns.
Whether a restart, automatic scan or manual tune was attempted.

Photographs of the on-screen readings, wall connection and antenna taken safely from ground level can reduce guesswork.

The bottom line

Missing free-to-air channels are commonly caused by the wrong source or channel filter, a loose fly lead, a failed splitter or amplifier, a temporary transmitter outage, incorrect tuning, interference or an antenna system that has become marginal on one frequency group.

First confirm that you are using the television's antenna channel list and record exactly which services are missing. Check for an outage, use mySwitch to identify the correct transmitter, reconnect the aerial lead and test a direct connection that bypasses extra equipment. Compare another outlet or television and review signal quality before retuning.

If a scan is needed, use Antenna or Terrestrial mode and let it finish. If the television chooses the wrong transmitter, use only the address-specific mySwitch information for manual tuning. Do not repeatedly scan during an outage or while the antenna signal is absent.

Call an antenna technician when the fault affects several outlets, varies with weather, follows damage or persists on one frequency group after the safe checks. Proper measurements can distinguish weak signal, interference, overload, cabling loss and equipment failure before money is spent on an antenna or booster.

Useful official resources

Information and official support references checked 12 August 2026. Available channels, frequencies, transmitter conditions, menu names and tuning procedures vary by address and equipment. Follow the instructions for your exact television or set-top box and use address-specific reception information.

Free-to-Air TV Channels Are Missing: What to Check Before Calling an Antenna Technician