Clicking noises on the TV: when turning on, during operation, after turning off

A beautiful and clear picture on the TV screen, ideal sound – these are the main parameters for the correct operation of the TV. But if a blue screen appears, the TV turns on and off, problems arise with the sound, problems appear on the TV screen in the form of stripes, this immediately causes concern.

If equipment that was working perfectly just yesterday begins to malfunction, and uncharacteristic crackling or noise appears, it means that very soon the malfunction will worsen and there may be a breakdown.

When a cracking sound is heard and there are certain signs, an experienced technician will be able to determine the cause of the breakdown and eliminate it. The owner of a TV also needs to have an understanding of a TV breakdown: why the TV is cracking, and whether it is safe to use it or whether it is better to unplug it.

Clicking noise when turned on

If, when pressing a button on the remote control, you hear one loud bang, do not be alarmed - with this sound, a relay turns on, which transmits voltage inside the system. If the sound is too strong, you should invite a technician to replace the relay; perhaps it has already exhausted its service life.

If the TV clicks but does not turn on, this indicates a failure in the control unit. The relay tries to start the device, but the built-in protection immediately turns it off. If you hear rhythmic clicks instead of normal operation, unplug the device from the power supply and call a specialist. It will either replace the entire control unit or eliminate the breakdown of the high-voltage wire.

Sometimes a quiet electrical crackle appears immediately after plugging in the TV. This is how a defect in the horizontal scan unit manifests itself. You must immediately turn off the electricity supply in the apartment, unplug the device from the socket and contact the service for professional diagnostics.

Preventive measures and self-repair

To avoid unpleasant sounds when operating television equipment, we recommend that you follow simple recommendations :

• Buy TV only from trusted companies and stores. Problems often occur with so-called “gray” technology.
• Correctly configure the sound card. If necessary, call a specialist.
• Update software and drivers in a timely manner.

Self-repair is an unacceptable solution to serious faults; replacement of the transformer, power supply, insulation, and other failed parts should be carried out exclusively by a specialist.

Features of crackling noise on TV

The TV crackles in different situations and the culprits are several nodes at the same time, which appear under the following factors:

• Manufacturing defects. Despite the manufacturer’s company and its status among customers, the problem occurs even on popular models. This is both Samsung and LG. In this case, the malfunction occurs not only on older types of equipment, but also on new devices with expanded equipment and modern screens. The prevalence of the problem is due to the fact that the demand for TVs is growing significantly, which is why production volumes have also increased, which is difficult for even TOP companies to control. This is also due to the fact that factories have long moved from their native countries and are located in China, Russia and some other countries;
• Human factor. This is either incorrect operation, violation of the manufacturer’s recommendations, or unprofessional installation/connection. The problem often occurs in apartments with old wiring, where one line is subject to serious overloads. For example, multicookers, electric kettles, powerful vacuum cleaners and other equipment are powered from the line where the TV is connected. Power surges become one of the main causes of crackling noise;
• Natural wear and tear of parts. When devices operate for a long time, component failure is inevitable. Malfunctions manifest themselves in different ways. Don't rush to buy a new TV. Repairing cracks is inexpensive and costs much less than replacing equipment with a new analogue.

Common Causes

If your TV is making a cracking sound, check the visual signs before contacting us. It can make noise when turned on, turned off, or when turned off.

One of the most common complaints is a crackling sound in a CRT TV due to high voltage. The sound that sounds like a stun gun is especially dangerous. In this situation, fire may occur. Disconnect the device from the network, call the teleworker. LCD and plasma models rarely make a crackling sound. A common problem is a malfunction of the power supply, which is typical for LG.

Types of noise

• After switching on. A quiet click when the TV starts is considered normal for some equipment. In older models, relays were installed that were distinguished by loud operation when switching modes. In Sony devices, clicks are present with a range of 10 seconds.
• While working. The sound of the TV crackles while watching channels and videos. The sources of the defect are poor-quality fits of the turns of the deflection system and transformers. Damaged parts are being restored and new components are being installed. Failures occur in linearity coils, which need to be filled with special compounds or replaced. Doing the work yourself is strongly not recommended due to the high voltage on the parts, reaching 1000 V. Unskilled intervention is fraught with damage to health and complete failure of the equipment. If the crackling resembles current discharges, there may be a breakdown of the boards, insulation on nodes with high current levels, or a defect in the relay on the power board. Do not operate devices with this type of problem.
• When off. For CRT models, a crackling sound after switching off is normal. The kinescope discharges and makes characteristic sounds. This also applies to the power supply in this type of equipment.

In all other cases, the reasons are:

• poor contact in the socket;
• violation of insulation in the wiring of the device;
• breakdowns on parts, penetration of current into components.

The TV beeps and clicks when operating.

When a TV beeps, this does not necessarily indicate a serious malfunction, but may be a feature of the operation of a certain model. Consult our specialists on this issue - it’s faster than searching for information on thematic forums. A quiet, whistling sound can be heard when elements inside the case are poorly secured ; the problem can be resolved by better soldering or fastening them with a special adhesive.

In CRT models, loud squeaks and clicks indicate a broken line scan. The defect appears when turned on - most likely the power supply is faulty. Remember that repairing television equipment yourself is dangerous; this can lead to it becoming completely unrepairable.

Advantages of contacting “Polite Service 5+”

If there is a crackling or crackling sound on the TV, contact us:

• A staff of experienced professionals. Qualified craftsmen with a narrow focus are sent to customers. Each of them repairs TV devices daily and does not mix activities with other household equipment;
• We work with all types of devices. These are both kinescope and LCD, plasma. We guarantee low prices and high quality services;
• All services are provided with an official guarantee. Additionally, the client is issued a check and related documentation, if necessary;
• Carrying out work of any complexity at home. We will not only find out what is cracking, but also fix the defect during one visit;
• We work from 7:00 to 23:00. You don't have to adapt to us.

If you want to maintain serviceability and find out why your TV is cracking, call us or request a call back. Experienced operators will provide competent advice upon request. TV repair with us is a guarantee of quality and the best conditions for cooperation.

Debugg

• In case of a manufacturing defect, you should contact service. If you have a warranty, then specialists will help you repair your TV.
• The solution to the problem of worn parts is inexpensive repair of your equipment. Service center specialists will be able to perform it efficiently.
• If the device makes strange clicking sounds after turning off, then there is most likely an insulation leak on the contacts or wires. The cracking noise can also come from the outlet itself to which you connected the device. To resolve the problem, you should unplug your device from the outlet. After which it is recommended to call specialists or technicians from the technical support service. Professionals have the necessary tools and in-depth knowledge to repair your TV. All this guarantees a high-quality solution to your equipment problem.

Floor creaking

source: Yandex pictures

Surely you will ask why exactly at night we hear this creak, and there are immediately two answers to this question. The first and most obvious is that at night, unlike other times of the day, there is deathly silence and, accordingly, we hear even the smallest sounds. Well, the second answer to this question will tell you in more detail why the floor creaks. But in fact, everything is very simple; it is connected with the simplest law of physics, namely “Thermal expansion of solids and liquids.” It is logical that during the day the temperature is much higher than at night. And accordingly, during the day the body expands, and at night it contracts, since the temperature at night is lower than during the day. This is what causes the creaking and crunching of the floor at night.

Makes clicking noises during operation

When the TV is used for more than two hours without interruption, the internal parts begin to heat up. From this point on, you can hear the quiet crackling of the plastic case. The only thing that can be done to stop the sound is to slightly unscrew the bolts that interfere with the movement of the material. In other cases, you will have to come to terms with this feature.

Often, if the TV is connected to a receiver and a complex audio system, a pop is heard when changing channels. If you did not increase the control volume in the TV settings, you need to check all connections and wires for breakdowns and other damage. It is also recommended to replace the connection via “tulip” with HDMI. If this doesn't help, turn off the external audio and check if the crackling noise remains on the internal speakers.

If, instead of sound, a working TV produces crackling, noise and clicking, you need to:

• Check signal connection. Often, defects in the receiving socket do not allow information to be transmitted completely; the sound may suffer, the picture may flicker, and image defects will appear.
• If possible, connect the broadcast source via an HDMI cable rather than RCA cables. This way the signal will be transmitted much better.
• If these steps do not eliminate the defect, invite a technician to inspect the horizontal scan unit. Most likely it is damaged. Many experts immediately suggest installing a spare part, but an experienced technician from Remontano can bring the scanner module back to life without replacement.

If these steps do not eliminate the defect, invite a technician to inspect the horizontal scan unit. Most likely it is damaged. Many experts immediately suggest installing a spare part, but an experienced technician from Remontano can bring the scanner module back to life without replacement.

If you need urgent help with household appliances, the service technician will restore any device in one visit to the client’s home.

The nature of the sound and ways to eliminate it

1. Subtle crackling noise when turned on. Indicates the accumulation of static electricity. But, on a number of TVs, the sound of a click when turned on is considered absolutely normal. Thus, Sony and sometimes Samsung models are characterized by several clicks with a short interval between them.
2. The TV crackles during operation, a quiet sound (whistle or rumble). The cause of the sound may be a loose fit of elements such as transformers or turns of the deflection system. It is necessary to repair existing elements with defects or replace them with new ones. If you do not have the necessary skills, it is better not to try to fix the TV yourself, because this may cause expensive units or the TV itself to be permanently damaged. In addition, performing such work is extremely dangerous due to the high voltage (about 1000 V). In this case, calling a specialist to your home is the best solution.
3. An electric discharge crackles. The printed circuit board, kinescope insulation boards or high-voltage components are broken. In most cases, a breakdown leads to the TV gradually breaking down. You won’t be able to fix it yourself, so it’s better to call a professional right away.
4. The device does not turn on, a hum (high or low frequency) is heard. The reason lies in a malfunction of the horizontal scanning unit or the TV power supply.
5. Low frequency hum when equipment is running. At times during operation, the sound indicates that the alternating voltage is poorly filtered. A breakdown can distort the picture on the screen and the sound of the TV.
6. Cracking noise after switching off. Indicates an insulation leak. The breakdown gets worse and leads to equipment failure. If the TV model has a picture tube, a cracking noise may occur after the TV is turned off. It indicates the discharge of the kinescope, and the power supply can also emit it. The reason may be poor contact in the socket or the plastic of the case. In such cases, it is better to consult with a specialist rather than try to find the nature of the sound yourself.

The predominant number of all TV repairs performed independently is the replacement of parts. But, if there is no certain knowledge, you can only aggravate the problem. In addition, calling a technician in a timely manner will in most cases be cheaper than purchasing expensive TV components. You also need to understand that the cracking sound will not go away on its own. If this is not considered normal (based on diagnostic results), the problem will only get worse and may make it impossible to repair the TV.

Therefore, it is better not to tempt fate, but to call a qualified specialist who can quickly determine the cause of the TV crackling and eliminate it if it really indicates a breakdown of the equipment.

Typical situations

Quiet crackling sound when turning on the TV

This is similar to a build-up of static electricity.

A clicking sound when turned on is normal for some TV models. For example, Sony TVs may have two clicks with a period of 10 seconds.

Quiet rattling or whistling sound when operating

Possible reason: loose fit of the turns of the deflection system or transformers

In this case, it is necessary to either replace defective parts or repair existing ones.

Some sources on the Internet recommend filling linearity coils with varnish or glue. We do not recommend that you carry out such work yourself due to the presence of voltages of about 1000 V. Insufficient quality work can lead to the death of the TV or its expensive units. We recommend calling a teleworker.

The crackle of an electrical discharge

This is a breakdown of a printed circuit board, insulation of high-voltage components or a picture tube. Usually the malfunction gets worse and renders the TV unusable. The breakdown is complex, we recommend calling a repairman.

Low or high frequency hum, TV does not turn on

Malfunction of the power supply or horizontal scanning unit.

Low frequency hum during operation

Poor AC voltage filtering. A malfunction may cause picture and sound distortion.

TV crackling after turning off

This is an insulation leak. Usually the malfunction gets worse and renders the TV unusable.

For CRT TVs, a crackling sound after switching off can be considered normal, because So the kinescope may be discharged or the power supply may make such a sound.

Sometimes the plastic of the case or poor contact in the socket can behave this way.

In this case, we recommend that you call and chat with the specialist. It is possible to carry out preliminary diagnostics of the breakdown over the phone.