The lack of pictures on the TV screen causes severe irritation. Therefore, many people are wondering what to do if there is no signal, and why such a thing is happening on the TV. The quality of work may affect the internal or external factors, each of which should be sorted out.
TV may not work properly due to several reasons, which are usually classified according to three main criteria.
Problems with equipment
technical equipment malfunction necessarily to some extent distort the signal. Trouble delivers:
- oxidation cable contacts or mechanical failure;
- failure of a satellite antenna during a hurricane or heavy rainfall, snowfall;
- failure of the TV receiver or a digital television;
- Software glitch with the distortion position the satellite dish.
repairs
Periodically providers who supply television services to carry out preventive work. Usually television companies warn customers about the work, but in case of emergency repair signal disappears suddenly and permanently.
External factors
During the squalls, heavy rain or thunderstorms TV does not show the channels due to the fact that there is no signal from the antenna. In such cases, unplug all equipment to avoid burnout or other damage.
Also in the apartment buildings of voltage fluctuations - are not uncommon. Frequent jumps badly affect the operation of home appliances - they may cause malfunctions, if not disabling. In order to avoid such problems in the shop buy electrical power stabilizer, surge protector or uninterruptible power supply.
In addition, because of the tall trees and high-rise buildings the signal from the cable television becomes weak, because they significantly interfere with its transmission.
update
Smart-TV owners sometimes face the problem of incorrect operation of the equipment with outdated software. Default flashing is done automatically, but sometimes it is necessary to carry out the update manually. This can be done in the "Support" tab in the TV menu.
Diagnostics
Primary diagnosis and elimination of simple reasons of failures in the work of the TV can hold any user. The algorithm is to identify the problem:
- Examine the connection point connectors and the cables themselves for mechanical or physical damage.
- Check the settings via the set-top box remote control to activate the desired playback mode AV / TV button.
- Check the operation of the receiver. If it does not work, the lights or do not burn, or burn red. On a working console light bulbs will light green.
- Please contact the provider hotline and make sure the lines are no breaks or other damage.
Decision
If the user has basic skills in the experience of repairing a technique, it is possible to fix the problem yourself. But if in any doubt better to contact the service center as unqualified intervention can make things worse.
cable replacement
The presence of wrinkles on the cable indicates an internal fault lived. Sometimes external defects are so small and numerous over the entire length of wire that will be easier to buy a new cable.
It is important to select appropriate modification wire because it affects the quality of the transmitted signal.
Optimal cable size for home TV - 3.5 mm with copper wire inside. Take the cord with a small margin of length, so that you can without problems to eliminate the damaged area in the future.
soldering connectors
dust accumulation of dirt, humidity in the room eventually lead to oxidation of the contacts. The only way to eliminate - dilapidated soldering connectors. To do this, remove and clean the insulation handle contacts with rosin and solder a new adapter.
Cleaning and adjustment of the antenna
Banal cleaning the transmitter antenna from the leaves dirt and ice should solve the problem. It is from this antenna receives and sends a signal to the TV.
Also try adjusting the position of the satellite dish - turn it to the left or right until the improvement of the image on the screen. Landmark choice of direction can serve as setting the neighbors, who are already adjusted.
Sometimes satellite equipment stops to catch the flow of the sprawling branches of a young tree. It is better to cut down or shortened depending on the situation.
Configure satellites
Perform satellite antenna tuning can automatically via remote control. Sequencing:
- Find the angle calculator at the operator's website.
- Enter the coordinates of the satellite.
- Find your current position. It is easy to identify with a smartphone through a search engine.
- Aim the antenna to the satellite.
All minor damage and malfunction of equipment settings to easily identify and correct yourself. If your hands can not handle, it is better to call a professional master. He will quickly find the problem, fix the equipment and give a guarantee on the work carried out.