TV fonit: reasons why there is background noise from the speakers

When the TV is noisy, it is almost impossible to watch it due to the unpleasant noise in the speakers. To find out the cause of the malfunction, you will need diagnostics. We strongly do not recommend trying to open the case, change the cable, or perform complex repairs on your own.

If background noise occurs in the speakers, contact service. We carry out repair work at the client’s home on weekdays, weekends and holidays from 7:00 to 23:00. To place an order for a specialist to visit you, call or request a call back on the website. TV repairs are carried out urgently when submitting an application within 12 hours. You can check with the operators for details.

Features of background sound in television equipment

When your TV speakers are humming, it's important to figure out the source. This will allow TV technicians to most competently prepare for the departure. Pay attention to the moment when the device begins to buzz:

When connecting the receiver via HDMI, tulip.
When using a digital set-top box.
If you bring a smartphone, tablet, smart watch with GSM.

In each individual case, it is worth considering all possible reasons. Remove smartphones from the equipment, turn off set-top boxes and receivers. Make sure the TV itself is working properly. Users confuse the background of currents with a whistle formed due to vibrations on transistors and radio elements during the passage of audio frequency currents. If the background sound disappears when you disconnect third-party devices, you need to look for the problem in the connected accessories.

Possible causes of problems

In 50% of cases, our repairmen discover some kind of system failure that appeared after updating the unit’s software. Some firmware versions conflict with transistor control circuits, which is why the latter make strange sounds.
The power supply is also quite noisy. In many plasma and LCD TVs, it is mounted too close to the inner wall of the case, which creates vibration waves accompanied by tapping. In some advanced cases, an incorrectly powered kinescope model hums like a transformer.
The microphone jack on the control panel is not activated.
The receiver is not configured as needed.
Fan blades are broken.
Poor phasing or poor location near the wiring.
If the microphone jack is too close to the speakers, high-frequency crackling is more likely to occur.
The tuner contacts transmit the signal unevenly.
A white screen and unpleasant noise are sure signs of a colossal load on the transformer.
If the TV volume is set to maximum and the tuner is set to minimum, radio interference will certainly occur.
Background interference may occur due to the way the satellite dish is connected.

Fonit after connecting the receiver, digital set-top box

The AC background appears in technology due to poor filtering of voltage rectification and interference of magnetic fields in low-frequency circuits. Failures occur in built-in parts, including the power supply and connectors for connecting external devices.

If the receiver is connected via a tulip, pay attention to the quality of the connection and the condition of the connector. If there is damage to it or the internal part, the contact is broken and electromagnetic waves give the effect of creating a background during operation. Occurs when the cord from the set-top box or receiver is close to the power cable.

Background noise sometimes occurs when the wiring is installed incorrectly. The owners lay electrical wires close to digital antennas. Cables are not always characterized by high-quality insulation, which is why electromagnetic fields produce the effect of extraneous noise in the speakers. Additionally, distortions and stripes appear on the screen.

As for mobile phones: during a call, the phone emits electromagnetic pulses that fall on the winding of the speakers on the TV. Then there is a background sound. The defect may appear when the phone is re-registered on the network outside of telephone conversations. Most often this happens on old-type television equipment, where there is no special protection or shielding from external electromagnetic influences. If the problem concerns new television equipment, there may be a manufacturing defect, failure of microcircuits or boards.

How to eliminate screen noise and ripples

Before calling a technician, you can follow a few simple steps yourself to eliminate the cause of TV interference.

Check if the channels on your TV are set correctly. Re-set up following the TV manufacturer's instructions.
Check the integrity of the antenna socket and connecting wires. Disconnect the cable from the TV connector. Make sure that the wires are not damaged, broken, pinched, or shielding is not damaged. Often, damage to the screen (a layer of foil or copper braiding inside the coaxial cable) causes interference.
Make sure the antenna is working properly. Decimeter antennas receive the signal best if they are directed towards the repeater. Check the position of the antenna; perhaps it has changed direction due to external influence, and therefore the image is rippling. If you have a second TV at home that is known to work, connect the antenna to it. If interference still persists on all channels, the problem is with the antenna and should be replaced or repaired.

Important! Radio signal sources, Wi-Fi routers, and access points installed or located near the antenna distort the signal and serve as a source of interference. They should be removed at a distance of at least one meter.

What to do when there is background sound?

If the sound of a Panasonic, Philips, BBK or other TV is bad, use the services of our workshop. We have been offering professional services for over 10 years. During this period, we have formed a large client base and a staff of qualified employees with extensive experience. All personnel undergo additional training when entering the market of new television technologies. We are always ready to undertake repairs of equipment of any type, year of manufacture, configuration, manufacturer.

For prompt, high-quality repairs, we maintain our own spare parts warehouse. It is formed in such a way that parts are available for most popular models of TV equipment in Russia, including Samsung, LG, Sony. Common breakdowns of certain TVs and brands are also taken into account. Thanks to this, you will not have to remain without TV for several days and wait for parts to be delivered. We will complete the repair during one visit.

Upon completion of the repair, the client is provided with a receipt and a warranty card covering the repair work and installed spare parts. Call us at our number and arrange for a telemaster to visit you at a time convenient for you.

Where to go to solve the problem?

You can eliminate troubles associated with extraneous background sound with the help of our workshop specialists. Our engineers have many years of experience and are familiar with all known TV models. Also, contacting us includes other advantages:

positive reputation of the service in Moscow;
own spare parts warehouse;
performing home repairs;
issuance of an official warranty card;
convenient work schedule: seven days a week from 8:00 to 22:00.

You can order an employee’s visit to Moscow by calling 8 or online using the feedback form. “TVFIX” works by appointment and on an urgent basis, when placing an order before 12:00 of the current day. Call us and we will offer the best terms of cooperation.

How to replace bearings

In order to replace bearings on a drum, you must have serious qualifications. Not all repair specialists deal with this problem; many simply do not want to get involved, because a fairly large percentage of repairs end in repeated breakdowns within the warranty period. There are many videos on the Internet in which “experts” cheerfully talk about how changing bearings is very simple and everyone can do it themselves. But experience in communicating with service engineers suggests that a positive outcome from such an undertaking is unlikely. Also, do not forget that washing machines have different types of tanks and can be equipped with either two conventional bearings or one double-row bearing, replacing which is much more difficult than in the first option.

Metal tank

Now it’s worth discussing the differences in washing machine tanks. For many years, older devices were equipped with stainless steel tanks that consisted of two parts and could be disassembled. This opportunity was created just to be able to replace bearings. However, this scheme always had one drawback - the tank could leak at the joints. Other disadvantages of a metal tank include its greater weight, as well as the high cost of production.

To replace bearings in a metal tank, it is necessary to disconnect the device from water and power supply, and then remove all possible covers and housing elements. Next, you need to disconnect all the wires from the tank (ideally, take photographs of the process, so that later it will be easier to put everything back together). The tank is attached to the body using springs on top and shock absorbers on the bottom. It is necessary to disconnect the fastenings and remove the tank, while trying not to break the weight that is attached to the top of the tank. After removing the tank, it must be installed on a reliable surface and disassembled. The bolts will most likely be soured, which will not allow this to be done easily. After disassembling the tank, you need to press out the old bearings and press in new ones. Then assemble the drum and step by step return the machine to its original state. Ideally, the tank should be washed to reduce the likelihood of mold and mildew.

Plastic tank

Plastic tanks began to be installed after manufacturers began to simplify washing machines. Unlike its metal counterpart, the plastic tank is very lightweight, is simple to manufacture and does not require any special technological solutions. The ability to replace bearings was lost with the introduction of plastic tanks. However, many craftsmen have learned to bypass this decision of the manufacturers. Instead of changing the entire tank, they decided to cut the plastic tanks and change the bearings according to the classical scheme. In this case, the tank is removed and cut very carefully, because after all the manipulations it has to be glued and bolted.

It doesn’t make the slightest sense to carry out such repairs yourself - the likelihood of a positive outcome is almost zero. It is important to understand that specialists from a good service center would never offer such an option. As a rule, the cutting of tanks is carried out by the most desperate of private craftsmen. If you still want to carry out this procedure, then you should think about the fact that the tank is glued with sealant and bolted together. The likelihood of a leak in this case is very high. You also need to understand that in the event of a breakdown, the technician is unlikely to come to perform warranty repairs.

Prevention

Make it a rule to treat the contacts of the tuner and all other devices that are directly connected to the TV system with an alcohol solution 3-4 times a year - this will slow down clogging and have a beneficial effect on the stability of the electric current.

Comply with electrical consumption and electrical safety standards. It is best to purchase an uninterruptible power supply and limit each viewing session to 3 hours. It is also worth checking that the wiring in the wall behind the unit is OK.

Use only original cables and adapters. Check their characteristics with the parameters of your device. Avoid situations where live wires and connectors are partially exposed or wet.

The rattling of the case can be leveled out by securely fastening the TV panel in place. The steel bracket does this brilliantly. If the TV is on a horizontal surface, evaluate its orientation using a building level and level it if necessary.

It is important to remember that identifying a defect in time and promptly seeking help from professionals will help you avoid a lot of troubles if, despite following all operating rules, the TV hums. Here are just some of the benefits of hiring a professional service provider:

troubleshooting any problems with devices of any brand;
quality assurance;
transparent pricing: after diagnosis;
the visit of the master is free;
the shortest possible time for completing work;
own warehouse of original spare parts;
We repair both old CRT and new LCD and plasma models;
We help you connect third-party equipment correctly.

If your TV keeps adding audio anomalies to the media signal, contact a specialist and solve the problem once and for all.

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Do-it-yourself troubleshooting

Some noise-related problems can be resolved on your own, provided that the user has a basic knowledge of physics and can work with different types of screwdrivers. What to do if the TV is noisy?

Software problems

Roll back the firmware version to the latest stable build or install the most current version.

Power supply vibrations

Carefully remove the back panel and check that it is securely attached. If necessary, replace loose/threaded screws.

The sound hums in the speakers and is superimposed on the main working audio signal

Move the TV away from the speakers, insert a plug into the microphone jack. Try to keep working phones away from speakers.

Fan damaged

Replacement is required.

The receiver is not configured correctly

Restore factory settings.

The difference in volume parameters between the TV and the tuner affects the frequency balance

Set the volume on the tuner (or other similar device) to minimum and on the TV to maximum. Then slowly reduce the signal volume on it until the extraneous noise disappears.

Stylish and functional Korting washing machines

If you decide to buy a new washing machine, then models from the Korting brand (Germany) would be an excellent option. The Kerting company has been producing high-quality household appliances for many years using durable materials, reliable spare parts and high German technologies. Also, the company's engineers do not forget about the aesthetic component: when developing new cars, professional designers are involved, who give the models a modern and harmonious appearance. Models from Kerting will look great in any room and will be a great addition to both classic and modern interiors.

The buyer can choose from a large number of different models. Both front and vertical solutions are available, which are ideal for installation in small bathrooms. If necessary, you can choose a model with a load of 6 to 10 kg, which can satisfy the needs of even a very large family. Both simple spin-dry models and unique dry-dry models are available. They use an additional heating element and a special fan, which allow drying without removing the wrung out laundry from the drum. The user can choose from a large number of programs that are designed for different types of fabric and soil levels. If desired, soaking or additional rinsing can be activated. The temperature and spin speed can be set using switches, and all the necessary information is displayed on the display or using LED indicators.

Differences between frontal and vertical models

Another important factor is the type of washing machine. All the manipulations described above concerned the most popular models today - front-loading. The design of a vertical washing machine is very different from a front-facing one. And the procedure for replacing bearings in such devices is much more complicated. It is worth noting that many technicians do not repair vertical machines, and to solve the problem you will have to take the device to a large service center. And this means additional costs and the risk of damage to the machine, even if the transport bolts have been screwed in.