Help library: Help library: LG TV - A tapping sound is heard when I’m watching or turning on/off the TV

LG TV - A tapping sound is heard when I’m watching or turning on/off the TV

Troubleshooting TVS/SOUNDBARS 09/19/2025

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<p class="info-desc">At this time, different parts of the case expand and create friction against each other, possibly causing tapping or bumping noises.</p>

<li>
Turning on and running the TV will normally create heat in the components. This heat expands the plastic parts that comprise the exterior.<br/>
At this time, different parts of the case expand and create friction against each other, possibly causing tapping or bumping noises.<br/>
This is called thermal expansion noise.
</li>

<li>
oid thermal expansion noise, all parts of the product must be made of the same material so as not to generate friction when they expand.<br/>
However, it is almost impossible to make a sophisticated electronic product using a single material.
</li>

<li>
This noise is also created in furniture, kitchen sinks, and cars and is not a defect.<br/>
he noise depends on the season and indoor temperatures, humidity, the years of use, the size of the product, etc., and often decreases over time.
</li>
</ul>
<p>※ Note that running a humidifier near the TV will increase ambient humidity and may aggravate such noises.</p><p class="help-txt">This guide was created for all models, so the images or content may be different from your product.</p>    </div>

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LG TV - A tapping sound is heard when I’m watching or turning on/off the TV

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