Do TV Antennas Go Bad? How Long They Last and When to Replace Yours

Your TV antenna sits on the roof through every heatwave, storm and cold snap, usually without a second thought. So it’s a fair question: do TV antennas go bad? The short answer is that an antenna doesn’t have a fixed expiry date, but the parts around it do wear out, and when they do, your picture is often the first thing to suffer.

What wears out first

• Connectors and cables: sun and weather make cable brittle, and water getting into a connector causes corrosion and signal loss.
• Mounts and masts: rust and loose fittings can let the antenna lean or rotate away from the transmitter.
• The antenna itself: elements can bend, corrode or break, especially after strong winds or when birds perch on them.
• Amplifiers and splitters: these electronic parts can fail even when the antenna looks fine.
• The aim: wind and vibration can slowly shift an antenna out of position.

How long should a TV antenna last?

There’s no single answer. A well-installed antenna in good condition can keep working for many years, while one that’s poorly fitted, badly aimed or constantly exposed to harsh conditions may need attention much sooner. How long yours lasts depends on the quality of the installation, the materials, and the weather it has to put up with.

Signs your antenna needs attention

• The picture pixelates or freezes, especially in wind, heat or rain.
• Some channels have disappeared, or you keep having to retune.
• The antenna or mast is visibly leaning, rusted or damaged.
• The problem started after a storm or very hot spell.
• You’ve had repeated repairs and the problem keeps coming back.

For a closer look at weather-related problems, see our guides to signs of a storm-damaged antenna and why antennas pixelate more in heatwaves.

Simple checks you can do safely

You don’t need to climb on the roof, and you shouldn’t. From the ground and inside the house, you can:

• Look at the antenna from the ground for leaning, rust or obvious damage.
• Check that cables at the back of your TV and wall plate are firmly connected.
• Retune your TV, which can fix missing channels.
• Note when the problem happens, such as in wind or rain, to tell the technician.

Maintenance, repair or replacement?

A simple repair, such as a new connector or re-aiming the antenna, is often enough when the antenna is otherwise sound. Replacement makes more sense when the antenna is badly corroded, damaged, or unsuited to your area. A technician can test the signal and tell you which it is. If you’re weighing it up, see our guide on when to repair and when to replace a TV antenna.

Looking after your antenna in Melbourne

Melbourne’s mix of strong winds, heavy rain and hot summers puts steady wear on rooftop gear. A check after a major storm, and a call when the picture starts to fall apart, can stop a small problem becoming a bigger one. If you’re thinking about a new antenna instead, our guide to TV antenna installation in Melbourne covers what to expect.

Mr Antenna repairs and replaces TV antennas across Melbourne, including Box Hill, Ringwood, Frankston, Dandenong, Werribee and Craigieburn.

Picture not what it used to be? Book a TV antenna check in Melbourne and we’ll test your signal and tell you what it needs.