Freeview: pixelating or breaking up picture, and aerial checks
If your Freeview picture freezes, breaks into squares or loses channels, the cause is usually a weak or disturbed aerial signal. Here are checks you can do safely from the ground.
Check for local problems
The Freeview website has a Channel Checker where you enter your postcode. It shows which channels you should get and whether there is a known transmitter fault or maintenance in your area.
Weather and timing
Heavy rain, strong wind and some weather conditions can affect reception. If the problem comes and goes, this may be the cause, and it often clears on its own.
Check what you can see
- Look at the aerial lead at the back of the TV and make sure it is pushed in firmly.
- Check the lead is not trapped, kinked or chewed.
- If you use a set-top box or recorder, check the lead is plugged into the Aerial In socket.
- Make sure the TV or box has its power cable plugged in properly.
Aerial signal strength
Many TVs show signal strength in the tuning menu, often under Manual Tuning or Signal Information. If it is low or flickering, the aerial or cable is a likely cause.
Mobile broadband interference
4G and 5G signals can interfere with Freeview. Freeview advises contacting Restore TV, which can diagnose it and fit a free filter if that is the cause. Check the Freeview website for current details.
The outdoor aerial
Do not climb onto the roof or ladders to adjust an aerial. A damaged, loose or misaligned aerial needs a qualified aerial installer.
Retune afterwards
If you made changes, retune the TV. You may need to reset favourite channels and scheduled recordings afterwards.
When to get more help
Get help if the picture is poor on every channel, if you suspect the aerial or cable is damaged, or if you are thinking of working at height.