The short answer
TV pixelation usually means the television is receiving a signal that is too weak, inconsistent or affected by interference. The cause may sit anywhere between the broadcaster and the TV: an outage, weather damage, a loose fly lead, a wall outlet, a splitter, an amplifier, cabling or the antenna itself. A simple sequence of checks can show whether the fault is limited to one television or affects the whole reception system.
Work through these checks in order
Change one thing at a time and note what happens. That helps separate a TV setup problem from a fault shared by the antenna system.
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Check for a broadcaster outage
Look at the broadcaster's reception or outage information before changing the equipment. Ask a nearby neighbour using free-to-air television whether the same channels are affected. A matching problem at another property can point away from your indoor setup.
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Write down which channels fail
Record whether every channel breaks up or only one broadcaster's group of channels. Also note the time, weather and whether the picture returns by itself. This pattern is more useful than a general report that the television is not working.
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Restart the TV and check the selected input
Turn the television off at the power point for a short period, then restart it. Confirm that the correct TV input is selected. If a set-top box or recorder sits between the wall outlet and television, test the path carefully so you know which device is producing the picture.
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Inspect the accessible fly lead
With the equipment switched off, check that the short coaxial lead between the wall outlet and television is seated firmly and is not crushed, sharply bent or visibly damaged. If you have a known-good lead of the same type, swapping only that lead is a useful isolation test.
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Compare another television or wall outlet
If one television pixelates while another remains clear, the issue may be local to that TV, its fly lead or its outlet. If several televisions fail at the same time, the shared cabling, splitter, amplifier, antenna or incoming signal becomes more likely.
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Retune only after basic checks
A channel scan can help after a broadcaster change or when channels are missing. It does not repair a weak or unstable signal. Repeated retuning during an active reception fault can remove channels that were previously stored, so first note the current channel pattern and check outage information.
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Notice nearby electrical interference
Observe whether the breakup starts when a particular appliance, light, charger or other device operates. ACMA notes that household equipment can affect reception. Switch only ordinary plug-in devices that are safe for you to operate, and leave fixed electrical work to the appropriate licensed trade.
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Record recent wind, rain or building changes
South East Queensland storms can bring damaging wind and heavy rain. Note whether the problem started after severe weather, roof work, solar installation, renovation or a new obstruction nearby. Do not assume weather is the cause just because the fault appears during rain; water ingress, movement or an already marginal signal can produce a similar pattern.
What the pattern can tell you
These clues narrow the search, but a signal measurement is still needed before deciding what equipment or cabling requires work.
| What you notice | What it may point to | Useful next check |
|---|---|---|
| One TV is affected, another is clear | TV settings, fly lead or one outlet | Swap the accessible fly lead and compare the same channel on both TVs. |
| Every TV breaks up at the same time | Shared signal path | Record the channel and time pattern for an antenna-system assessment. |
| Only one broadcaster's channels fail | Outage, tuning or frequency-specific reception issue | Check broadcaster information and compare with a nearby property. |
| The fault began after wind or roof work | Possible antenna movement, mount damage or cable disturbance | Arrange a ground-up inspection and avoid accessing the roof yourself. |
| Breakup follows an appliance switching on | Possible local electrical interference | Record the device and timing, then share that pattern with the technician. |
Why adding a booster can make reception worse
A signal amplifier is useful only when the signal path and levels justify it. ACMA cautions that a booster can overload a television receiver and make reception worse. It can also amplify unwanted interference along with the wanted broadcast signal.
If the existing system already includes an amplifier, note where its accessible power supply is located and whether its indicator is on. Do not buy another booster as the first response to pixelation. A technician can measure signal strength and quality at useful points in the system, then decide whether amplification, attenuation, a cable repair or antenna work fits the fault.
Have this information ready for a reception enquiry
A short fault record can reduce guesswork during the first conversation.
- The property suburb or postcode and whether it is a house, unit or commercial property.
- The channels affected, when the fault occurs and whether sound also drops out.
- Whether one TV, one outlet or every connected television is affected.
- Any recent storm, roof, solar, renovation or equipment change.
- Whether the property uses a shared antenna system, splitter or powered amplifier, if known.
- Which ground-level checks you completed and what changed after each one.
When a reception assessment is the useful next step
Arrange an assessment when the fault affects multiple televisions, returns after simple lead and tuning checks, began after visible storm damage, or cannot be isolated safely from inside the room. Intermittent faults still deserve a written time and channel pattern because the signal may appear normal during a short visit.
The useful outcome is a diagnosis of the signal path. That may lead to a connector or cable repair, antenna realignment, removal of unsuitable amplification, work on a shared distribution system, or replacement of damaged or unsuitable equipment. The test result should drive that choice.
Sources used for this guide
Published guidance was checked on 7 September 2026. The sources support the general reception and safety information above; property-specific conclusions still require inspection and testing.
- Australian Communications and Media Authority: TV reception Reception checks, antenna condition, cabling, amplifiers and interference guidance.
- ABC Help Centre: TV reception issues Channel, neighbour, retuning, weather and shared-system checks.
- WorkSafe Queensland: domestic roof spaces Electrical hazards and homeowner roof-space safety guidance.
- Queensland State Emergency Service: storms Queensland severe-storm hazards and household safety context.