New technologies allow you to watch central digital television in high quality. Via TV tuner T2 even analog models gain contrast, sharpness of contour and depth of colors. Watching digital channels is possible on TVs of different generations: modern ones are presented with an already built-in tuner and allow you to control the equipment with one remote control. But it is not always possible to configure the technology for digital broadcasting. Consider situations in which the TV does not find the channels.
Digital Channel Algorithm
Regardless of the type of TV, frequency tuning is performed according to one scheme. What is in the modern Samsung model, what is in old devices. the principle of action is almost identical. First of all, it should be corresponding antenna, capable of receiving the signal of a television tower broadcasting digital television. If the device catches a signal, the adapter will offer to add it to the menu. After connecting it to the receiver, the setting will be as follows.
- You must open the Broadcast settings menu.
- Select automatic search.
- Click the Start button.
- The software will ask you to decide on the choice of signal source: antenna or cable. The latter is selected in the case of cable broadcasting.
- When connecting an antenna, the device will offer you to select a subdirectory of analog or digital channels, or you can configure a complete list that includes both.
- The last step is to run a “scan”.
To be careful, there are many tips on the TV menu, but it is important that the signal receiver is installed correctly and the T2 prefix is connected.
If TV does not catch channels, can be used alternative methods of connecting digital frequencies using a cable or satellite box. To search in the first way, it is necessary to connect a cable cable to the antenna connector. In the settings, selecting the auto search menu, a new window will appear. If you need to connect digital television, you must choose not cable TV, but “other operators”. In the preset of cable television, click “Full”, which allows you to select the search for only digital channels. The control panel can sort the channels, and put them in the right positions.
The receiver has an RF OUT jack
Using satellite equipment, connection is made by two types of cable. For these purposes, a high-frequency cable connected to the receiver via the RF OUT connector is connected to the antenna. After the connection, you can connect the equipment to the network and run auto-search of channels on the receiver. The search will end when information about the absence of a signal appears. The receiver is connected to the TV by a low-frequency cable of the “tulip” type and the video mode is activated. Then through the menu with the sections "quality" and "signal strength" you can adjust the plate. If the connection was made correctly, the found channels will be played without interference.
The reasons for the lack of digital television and ways to resolve errors
If it was not possible to find digital channels during automatic start, errors may have been made. Why doesn’t the TV find digital channels during setup? This is the most common user question that occurs when trying to set up a modern TV with many built-in functions. Consider the main causes of the problem and how to solve them.
Testing equipment capabilities
Owners of new televisions equipped digital tuner DVB T2, can watch broadcasts of a modern format without resorting to the help of additional equipment. Other viewers need to connect a set-top box with a similar decoder to receive ECTV on their television.
You can verify the technical capabilities of your TV receiver in the following ways:
- refer to the documentation of the TV and specify which formats are supported by the device;
- search for the necessary information on a specific TV model on the manufacturer’s official website.
Attention! If the technical specifications of the TV receiver indicate support for the DVB T2 format, this means that the device is capable of receiving multiplexes of ETV. Otherwise, you will need to purchase a special console. A satellite receiver for receiving digital airtime is not suitable, since it works with a different format, DVB-S.
There are models of TV sets and set-top boxes equipped with two different antenna sockets: for receiving terrestrial and satellite signals. For such devices, it is important to properly connect to the signal source. We check that the cable from the all-wave broadcast antenna was connected to the corresponding connector.
Set-top box connected via HDMI cable or tulips. You should check the correctness of the physical connection and the selection of the appropriate port on the TV. If defects are found, you should correct the connection, select the desired signal source (Source button on the remote control).
Timeliness of software updates
The cause of problems with setting multiplex reception may be outdated software for the receiving equipment. On modern Smart TV, the software is updated via the Internet, and if the TV does not catch digital channels, then you should check the update and start the automatic update.
Set-top box software with DVB T2 tuner It may also work incorrectly, which causes problems with the reception of digital signals. Installing a software update solves the problem. On the thematic forums and in the instructions for a specific model, you can find information on the procedure for flashing a TV set-top box.
Setting the signal quality from the antenna
Problems with the lack of digital channels may be related to antenna tuning. Diagnostics of malfunctions is carried out step by step.
- Audit status of connecting cable and contacts. If cable jams, damaged areas and poor connections are detected, the defects should be eliminated.
- Ensure proper operation signal amplifier through trial tuning of radio and TV signals.
- Adjust the position of the antenna by making small turns to achieve the best performance. signal strength and quality indicators. from 70% and above.
If you have all the hardware elements and the correct connection, the digital channels will be configured without problems using the settings menu sections. The tuning algorithm for specific brands is described in detail in articles on Samsung and Philips TVs.