Repair Of TV Receivers: Malfunctions Of Tuners In The TV, Repair Of The Jack Of The Tuner Samsung And Others With Your Own Hands

2024 Author: Beatrice Philips | [email protected]. Last modified: 2023-12-16 05:33

Many regions of our country have appreciated the benefits of digital television. Television ranks first in the entertainment world. The number of users is huge. And if broadcasting suddenly stops, life "stops". A common cause of malfunction is precisely the breakdown of the receiver, which we will now consider. There are various models of satellite receivers, but the most common faults are the same for all.

Diagnostics and possible malfunctions

First of all, you need to make sure that it is the TV receiver that is really faulty. We will carry out diagnostics with our own hands. What exactly can happen to the TV of the most popular brands - Sony, Samsung and Philips?

Major malfunctions:

• there is no channel search (the contact of the input to the receiver or the output from the converter may be broken);
• interference on the screen, regardless of the weather outside the window (try changing the position of the satellite dish or changing to a dish with a different optimal diameter);
• there is not always sound (you need to check the volume on the TV and receiver);
• instead of the image, symbols on the screen (restart the equipment);
• channels are unavailable or require decoding (also reboot);
• the antenna cord is faulty (when disconnected, the inscription disappears on the screen).

Other possible causes of breakdowns:

• changing the position of the plate;
• the receiver is not connected to the TV;
• broken power supply;
• the registration of the receiver has ended;
• the converter is out of order;
• interference in signal reception due to weather conditions;
• violation of operating conditions;
• no satellite signal.

Besides, the power supply may burn out - when connected to a network, the screen flickers or does not turn on at all. In this case, it is necessary to replace or repair the unit.

If the receiver turns on, all the symbols on the screen light up, but there is no broadcast on the TV, you will need to replace the motherboard or do a flashing.

If the tuner is defective, it must be replaced.

How to repair?

Repairing TV receivers after the end of the warranty usually costs a lot of money . If the warranty is still valid, the seller must make diagnostics, fix the damage or replace parts free of charge. If you have finished registration, then you need to contact technical support for a new activation.

However, a novice specialist can also eliminate minor breakdowns . First of all, it is necessary to determine the malfunction - most often it is interference on the screen or inaccessible channels.

You can independently restore the search for channels, remove interference on the screen or replace characters with an image, as well as correct the antenna cord and increase the sound.

To do this, you need to check the contact of the input to the receiver and the output from the converter, change the position of the satellite dish, restart the equipment and check the sound on the receiver and TV.

In addition, the power circuit can be restored. Most often, there is such a situation when the fuse has blown. It must be replaced, then check the input for current supply and you can continue to watch TV.

All elements of the receiver can be checked for a short circuit, in this case, burnt ones must be replaced with new ones . When replacing, it is important to act carefully, disconnecting the device from the electricity, otherwise you may be electrocuted.

If the condition of the TV cable jack is poor, the picture quality may be poor. Replacing a socket is much more difficult than anything else. In this case, it is better to contact a professional.

If there is a glitch in the interface system, then a simple update is required . Usually the instructions can be viewed on the info channel.

We check the broadcast of the signal from the satellite in the main menu, in the settings (manual search) on the level scale. If it shows zero percent, then this is the problem. No signal can be caused by misalignment of the receiving device. The fasteners may loosen over time and the position of the plate changes.

If the structure is large, then a strong wind can also change direction.

We check the switch on the satellite dish (a small box that has one output and several inputs) for rust. The oxidized switch must be replaced. It is the most fragile component of satellite equipment and the most vulnerable to moisture.

We check all cables . We rotate the joints and check for signs of oxidation.

Damage to the tuner happens due to dust and dirt, mechanical damage. It needs to be cleaned and the device will continue to operate.

In addition, the receiver may overheat from prolonged viewing or simply be disconnected from the TV. If everything is ok, try checking if the package has been paid for. Preventive maintenance can be carried out. There is nothing to be done, you have to wait.

The receiver is a rather complex multi-element device. Even the most reliable and high-quality equipment can break down due to bad weather and electrical problems.

Serious work - replacing software or firmware, repairing the motherboard and expensive parts - must be entrusted to the master.

therefore if you have an expensive digital set-top box, then it is more expedient to hand it over to the specialists of the service center . There are advantages to specialized repairs. You are given a guarantee for a certain period and all causes of damage are established.

Recommendations

In the absence of proper experience, you cannot be sure of the quality of your diagnostics and repairs performed, therefore it is better to contact a specialist. But if you have pinpointed the problem, you can fix it within minutes.

To avoid breakdowns, you must follow a few simple rules:

• only authorized personnel should install and connect the equipment;
• protect the attachment from mechanical damage;
• do not violate the instructions for use.