Common faults of cable TV, cable TV fault repair telephone

Horizontal horizontal lines appear on the TV screen Causes. The horizontal line on the TV screen may be ,.. that there is a problem with the line

The TV picture is not clear Causes. If it is the TV itself, it may have been damaged, affecting all channels of TV.

Causes of snowflake-like dots on the TV screen. When a TV screen produces a large number of classes for only certain channels.

Gaochun District, Nanjing City fault repair**.

Caused by a problem with the network settings of the TV; You can enter the network settings interface and try to connect to the wifi signal at home again. The network is abnormal and the Internet cannot be accessed. Other devices such as computers, tablets and other devices should be connected to the Internet normally, and the network fault should be eliminated first.

What is the reason for the abnormality of the cable TV network, then there are many of them, it may be that there is a problem with your network cable, there may be a problem with your receiver, and there is a problem with your TV, you can try it yourself, so that you can find out some problems.

If the cable TV network shows abnormality, it is related to the network, and it may be that the set-top box is not plugged in tightly or there is a problem with the network.

1. Check whether there is a problem with the connection between the TV and the set-top box, the set-top box and the external signal cable, and if it is loose, reconnect and fix it; If necessary, you can try to reconnect it with a different cable.

2、Secondly, check whether the signal source mode of the TV has been switched correctly,You can press the signal source key of the TV,After popping up the signal source menu options,Select one by one,Press the confirm button to switch one by one,Until the TV shows the picture of the set-top box。

3. If the TV still shows abnormal signal after the above methods are checked, it may be a problem with the external signal input, and you need to contact the local TV service provider to troubleshoot and repair the communication link and server.

4. In addition, the hardware failure of the TV or set-top box will also lead to signal abnormalities, such as interface failure, internal signal processing device failure, motherboard chip and other component failure, etc., which need to be repaired by contacting the corresponding after-sales service to solve it.

What causes cable network anomalies? I think this cable TV network is abnormal, it should be that there is a problem with the cable TV network, so I can only wait for the maintenance personnel to repair it.

Local cable broadcast service provider operator. Article 18: Where cable radio and television operation service providers need to make door-to-door repairs after receiving a user's fault repair report, they shall make an appointment with the user for door-to-door maintenance within 24 hours of receiving the report.

Article 19: Cable radio and television operation service providers shall repair network and equipment failures for urban users within 24 hours of receiving the report or within 24 hours of the user's agreed on-site maintenance time, and major failures shall be repaired within 48 hours; Faults of users in rural areas or areas with inconvenient transportation shall be repaired within 72 hours from the day after receiving the report or within 72 hours of the user's agreed on-site maintenance time.

Common faults of cable TV:

1. No signal: that is, no image, no accompanying sound. There are many reasons for the phenomenon of no signal, sometimes it is one household, several households, an entire building, sometimes a certain area or several districts, and sometimes a larger area.

It is not very difficult to overhaul the phenomenon of no signal failure, as long as the scope and cause of the fault are clearly distinguished, it can be solved quickly. When overhauling, first check whether the line is open or short, then check whether there is a power outage, and finally check whether the device is damaged.

2. Signal AC sound interference: AC sound interference is also known as communication "sound enjoyment". Horizontal stripes that move up and down on the image appear, known as "raceways".

One raceway on the screen is interfered with by the 50Hz ripple of the power supply, and two are 100Hz ripple interference after rectification. This interference mainly comes from the power supply of the amplifier or TV. Check that the amplifier is well grounded, whether the transformer is damaged, and whether the screws of each part are loose (including the cover screws).

Cable belongs to the radio and television department.

Isn't it all merged with broadband networks now, if you handle mobile, Unicom, telecom, just dial the company's customer service line, if it's old-fashioned cable TV, ask the subscriber who provides the service, let them help you solve.

It should be the Radio and Television Bureau!

The TV is very stuck, there is no picture, please repair.

Radio and Television Administration. Now there is no unified repair report in the country**, you can call 114 to check the local area.

There are several reasons why the TV screen prompts "cable TV signal loss":

1. Check whether the cable TV signal cable is connected correctly. Check and fix the connection between the cable TV signal line and the cable TV terminal box, the connection with the input interface (F head) of the set-top box, and check whether the cable TV signal line core is too short.

2. Check whether the wiring in the user's home is standardized, check whether the cable quality and impedance matching meet the standard, whether the signal attenuation is too large, whether the shielding is good, check whether the quality of the branch distributor meets the standard, and whether the use method is correct; Check that the cable connector is up to specification, that the connector is oxidized, that there is an amplifier installed in the home, or that there is interference from other active components.

3. Measure whether the level and quality of the user's home home signal are up to standard, determine the channel where the user's poor viewing quality and missing programs are located, measure the level and quality of the channel's home signal, and appropriately adjust and replace the branch distributor or optical workstation (amplifier) according to the test results, so that the signal meets the design requirements.

5. To judge the failure of the set-top box, if the input signal test of the set-top box is completely normal, or the use of other set-top boxes can be viewed normally, the user needs to replace the set-top box.

There may be several reasons for the abnormal TV signal of the cable Tuantan:1Signal Cable Connection Issues:

Check whether the cable TV signal cable is plugged in tightly, damaged or aged. Try plugging the connector back in or replacing the signal cable. 2.

Failure of receiving equipment: If there is a failure of cable TV antenna, set-top box, modulator and other equipment, it will cause the cover or lift signal to fail to receive normally.

There can be many reasons for the problem of abnormal cable TV signal, here are a few possibilities:

1.Channel problem: Sometimes it may be that the TV station is in the process of FM or maintenance, resulting in unstable channel signal and inability to watch TV;

2.Cable problems: Sometimes the TV signal line is disorganized, which may be caused by poor contact of the line, loose wire ends, damage to the TV line, etc., and the TV cable needs to be repaired;

3.Weather reasons: TV signals are seasonal, and there is a possibility that the signal cannot be received normally due to weather factors;

4.Technological problems: similar insufficient bandwidth is rare in China, but the wax cover is in some less developed areas, which often cannot meet the needs of consumers and is easy to cause signal interference.

The above are some of the reasons for the abnormal cable TV signal, in order to normalize the TV, Zaotong recommends timely repair or replacement of bad TV lines, and can restart the signal source through the stool to restore normal; At the same time, pay attention to the weather and channel adjustments released by the official in a timely manner, so as to ensure the normal ** TV, and strengthen the protection of consumer rights and interests and quality supervision.

Cable TV signal abnormalities can be due to the following reasons:

Experiencing bad weather or network interference.

The TV source is selected incorrectly.

Be cautious if the signal transmission line fails.

The cable connecting the TV to the box or other device is faulty.

Faulty network connection.

The external device is not turned on.

Hardware failure inside the TV.

If it is a cable TV failure, you can contact the cable TV company to check whether the signal quality is up to standard. If it is an IPTV failure, you can check whether the network connection is normal. Wild judgment.