Why Does My Tv Crack At Night?

Have you recently heard your TV cracking? While changing TV channels or while viewing any TV program, you could listen to the cracking sound. Or, it might be heard after a shutdown.

The temperature variation phenomena are typically to blame for the crackling sound from a TV. Most of the time, they are absolutely safe, but occasionally things might get worse.

Frequent Causes of TV Cracking At Night

Temperature Changes

Manufacturers will constantly reassure you that it is not a problem if you hear cracking or popping sounds from your TV. Most of the time, it’s just a typical occurrence, independent of any other significant internal hardware issue.

When internal components expand or contract in response to temperature fluctuations, there is a crackling sound. It usually sounds like that when the TV is on or off. It even fluctuates in volume in response to temperature, humidity, and other environmental variables. There is no reason to be concerned unless it becomes frequent or loud.

Things Attached To Your TV

Using a cable box to change channels may also cause these noises to appear. Alternatively, it could be audible when skipping ahead in a satellite recording. When utilizing the cable box, just the noise is heard, which suggests that the set-top box may be the problem.

Why Does My Tv Crack At Night

Additionally, if your TV’s built-in tuner or switching between video inputs doesn’t produce any noise, the problem isn’t with your TV. Yet again, the set-top box or its settings could be the issue. The user may select his favorite output setting on some set-top boxes, which should be fixed.

After using the recommended settings, restart your set-top box. For additional troubleshooting advice, get in touch with the manufacturer if the issue continues.

Unreliable HDMI Cables

Take the remote control, then select SOURCE. To determine whether the sound results from a broadcast issue, switch channels. To alter the Source of the programming, press the SOURCE button. If the noise stop, one of the wires or a linked item must be the problem. Cables that could be faulty or loosely attached.

Faulty Equipment

Manually inspect the TV’s audio and video cables. A linked TV device could be broken, such as a game console, DVD player, or many other things. Incorrectly connected wires or cables attached to the wrong port might likely result in audio issues, or even worse, no sound at all. That holds true for any TV-connected equipment.

Try switching both the Source and the channel. If the issue disappears when the TV-connected device is not in use, the device itself might cause the problem. That appliance needs to be checked out or changed. If and when the noise persists even after switching the Source, the TV may be to blame. The TV might need to be fixed; have your reliable professional examine it.

Self-Diagnosis Instrument

A self-diagnosis feature has become standard on TVs made after 2009, so check it out if yours was one of them. To proactively troubleshoot the issue, do this. The support area of your TV should contain that utility, so check the menu screen.

If the diagnostic tool determines that there is no issue with the internal speakers after internal tests within the TV. The cords or an external gadget can be the issue. Change the cable, get the external device inspected, or get it fixed.

Why Your TV Cracks At Night?

Your TV may make strange noises after turning it off because some of its internal components may contract thermally.

These components’ construction materials could be metal or plastic. They tend to somewhat expand while the TV is on because of the heat. They shrink when you turn it OFF. There is no cause for alarm by these noises.

Your TV may be beeping or buzzing for other reasons than those listed above.


  • The cables attached to the various ports on the TV may become damaged or not plug in properly, which may cause noise distortion.
  • Possibly the TV speakers are making the noise.
  • The show you’re watching may be having transmitting problems.
  • An odd noise could be audible if faulty equipment is connected to the TV.
  • The TV might actually have a problem that requires repair.

Unsecured Cables

Cables may have been used to connect gadgets to your TVs, such as DVD players, external speakers, and other audio-visual gear. It may make noise if any of these are improperly connected or placed into a TV port.

Speakers for Televisions

Click the mute button on the TV remote to ensure the noise is not coming from your speakers. If the noise persists, it can result from additional outside interference. The speaker might be to blame if the sounds have stopped.

Other Connected Devices

If the noise persists even after you’ve muted the TV speaker, it might be coming from another device you might have hooked up to the TV. You can feel comfortable that the TV is fine and the noise is not originating from it if you disconnect all such connected devices and the noise disappears.

Now that each device has been disconnected, you can reconnect them one at a time to identify the Source of the issue.

Channel You’re Watching

Sometimes the television noise could be caused by the show you are watching. You can perform this easy exercise to confirm this. Change the source using the remote control. If the noise stops, a broadcast issue is the only other possibility.

TV-related Noise

You should phone the service center and request to have a technician sent out if the noise is being caused by a broken part inside the TV.

Other TV Problems At Night

Detect An Echo

If you can hear an echo, you most likely have an external sound system, such as a soundbar or stereo sound system, and your TV speaker and your external sound system’s volume turned up. The separate sound system you purchased is far more expensive due to its superior acoustic quality.

If you have a standalone audio system, you do not want to play sound through the TV speakers as it will always generate an echo. You should only use your auxiliary sound system and turn off, mute, or down the level on your TV speakers. The echo should disappear as a result.

TV Starts Up But Has No Picture

Your TV turning on but not displaying a picture could be caused by various factors. Your TV being on the incorrect input is the most frequent cause. The “input,” “source,” or “TV/Video” button on your TV remote usually allows you to change the input. Push the button repeatedly to cycle between the inputs until your picture appears.

If you are on the correct input but can still not see a picture, check that your cable or satellite receiver is on and that all connections are tight. If you’ve already done so, you might need to unplug and replug your cable box to reset it.

Why Does My Tv Crack At Night

Attempt switching to a different device if it doesn’t fix the problem. You should contact your service provider for assistance if you can see a picture on another device, as this indicates that there is probably a problem with the box itself or your signal.

Unmatched Audio And Video

It is frustrating to see someone’s mouth moving but can’t hear what they are saying. You hear “hello” after the mouth has stopped moving after you saw someone’s mouth utter “hello.” Like hearing a voice-over in a foreign movie. Go to your TV or cable box’s audio settings and change the “audio delay.” This ought to restore your sense of balance.

Pixelating or Fragmenting In The Image

Verify that every connection from the wall to the home network and the cable box to your TV is secure by checking each one individually. A weak signal is most likely the cause of your television’s picture pixelating (everything appears to be made up of squares), breaking up, or cutting in and out. If you still have problems, you must get in touch with your satellite or cable provider.

Do All TV Types Make Cracking Sound At Night?

There may indeed be a problem with any TV type. It is a typical issue with CRT, LCD, or LED TVs. Static discharges may be to blame for a cracking noise on a CRT television. The plastic casing of an LCD or LED TV may make a cracking sound when it cools down due to temperature differences.


It’s time to hire an expert if you tried every fix suggested in this post but couldn’t solve the issue. Your TV’s hardware likely has a significant problem that needs to be fixed. If you still have the warranty, you can get it fixed without paying anything. Please bring it to the approved repair facility.

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