Why is the sound on my TV dropping out?

What can you do if the sound on your TV goes missing? We must say right away that there are a huge variety of reasons for such a malfunction, so it is not as easy to determine them yourself as it might seem. The most commonplace of them is that you simply mute the sound or twist the knob to the minimum. You may laugh, but these situations do happen, so be sure to check the volume level.

Reasons for malfunction

In the vast majority of cases, the complete disappearance of sound is the reason for the failure of any components of the speaker system. Therefore, to identify a malfunction, it is simply necessary to diagnose such nodes as:

• sound amplifier. It is he who is designed to ensure high-quality sound of a television receiver. The device is very susceptible to voltage surges in the network, due to which it can quickly burn out. Therefore, the search for breakdowns should begin with him;
• speakers. The very simple design of these components makes them very reliable, however mechanical damage or normal wear and tear can lead to the disappearance of sound;
• radio channel. Its malfunction may be indicated by too low sound volume and inability to adjust it.

If we talk about the most common problems, then it is the speakers that fail over time in almost any TV set. For self-diagnosis of the malfunction of these parts, you can suggest connecting headphones to the device. If sound appears in them, then you will need to install new speakers.

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Malfunctions that lead to the disappearance of sound

If you have lost sound in your TV, this may not always be the result of a breakdown of the speaker system. Very often, the failure of other components of the device leads to such a problem. To identify a malfunction, you need to find out the circumstances due to which it arose.

For example, if the sound disappears right while watching TV, this may indicate defects in the microcircuit, its burnout as a result of a sudden power surge or for other reasons. Such malfunctions are often accompanied by the appearance of an unpleasant burning smell, so it will not be difficult to identify them. Turn off the TV immediately and call the technician to carry out repairs, since you cannot do anything on your own in this situation.

Is there a sound, but its volume is minimal, despite the fact that the regulator is turned to the maximum? In addition to the problems with the radio channel already mentioned above, such a symptom can cause a failure of the TV processor or a software failure. In either case, it makes sense to turn to a telemaster who can quickly detect and fix a breakdown.

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Malfunctions of contacts and connectors of the TV

Poor contact between the speaker system and the TV's motherboard can also cause loss of sound, as well as the following problems:

• the sound disappears immediately after turning on the device. In such a situation, you can try to turn off and start the TV again. Sometimes this helps to restore normal operation, otherwise repairs are required;
• when you turn on the sound, there is no sound, but after a few seconds it still appears. This malfunction is the result of a speaker breakdown or the disappearance of contact between individual modules of the device.

What if the problem lies in the failure of contact groups or connectors? First you need to find the part that failed. To do this, you need to ring the entire circuit with a multimeter. If a problem is found, the old connector is removed from the board and replaced with a new one.

If you know a little about the design of modern TVs, there are a few simple steps you can take to fix the audio dropout issue:

• remove the plugs connecting the speakers with the audio path, make sure they are intact and connect back;
• check the presence of a signal at the output of the microprocessor;
• make sure that voltage is applied to the amplifier;
• check for the presence of the MUTE signal;
• gently tap on the speaker cone. It is quite possible that the contact has simply gone away and a small impact will eliminate the problem;
• Use a screwdriver to touch the amplifier input to make sure the signal is passing through the speakers.

This will help you find the most likely causes of the malfunction, however, all of the above operations must be performed with extreme caution so as not to suffer an electric shock.

Information provided by the service center "In repair!" (TV).

See also:

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• 10 best 32-inch TVs according to customers
• Top 10 46-inch and 47-inch TVs