How to solve the problem that the signal of the TV has become very poor?

from the Song Dynasty".

There are a total of 4 TVs in your house, including one on the 2nd floor, two on the 3rd floor, and one on the 4th floor (you live on the 4th floor) The TV signal in the room on the 4th floor is very poor, (there are snowflakes, and you can only see a hazy portrait) If the situation introduced to you --- the signal of the other TVs is very clear".

You can check the following aspects to solve the problem:

2.Is there a problem with the cable that checks the cable TV splitter to the fourth floor?

The inner conductor of the cable TV 75-5 coaxial cable is all copper core, and the diameter of the inner conductor should be 1 mm), be careful, do not replace it with other wires! Don't buy cheap low-quality cables.

The ** of a good 75-5 coaxial cable is about a meter or so.

3.Check whether the cable TV distributor to the fourth floor of the cable connection at both ends is normal, the correct connection is shown below**: <>

4.Check whether the ***, regular distributor (can not use the branch), cable TV special distributor see below**: <>

A wired incoming line, if you want to watch multiple TVs, it is best to install a frequency divider. There are a lot of them on the market. Judging by your narrative, it's best to buy one with more than four outputs. About $10.

After buying this thing, you have to figure out which is the incoming line (input) and the other is the output. Connect the input cable, and then assign a TV to an output port (measure the distance first, and then arrange the cable, it is best to use the through cable, and there should be no interface in the middle).

Presumably due to the poor quality of the splitter and cable lines when installing cable TV.

First of all, replace the cable connecting the TV to the cable TV with a *** try. If it doesn't work,Replace the distributor of *** Try it,Pay attention to the connection at the connector must be correct,If it still doesn't work,I have to replace the TV signal cable。

Go to an electronic accessories store or a place for small household appliances, and buy a few cable TV signal amplifiers to install them separately for each TV.

1. If the connection line between the cable TV set-top box and the TV is loose or the contact is poor, resulting in loss of signal, you can check the connection line, reconnect it correctly, and fix it;

2. If the user misoperates, the signal source of the TV is switched to other modes, resulting in no signal on the display, you can press the signal source key of the TV to switch the signal source mode one by one until the picture of cable TV is restored;

3. The signal is lost due to the failure of the external cable TV signal transmission line or the server failure of the service provider, and it is necessary to wait for the service provider to repair before returning to normal;

4. The hardware failure of the set-top box or TV causes a sudden loss of signal, which needs to be repaired by contacting the corresponding after-sales service to solve it.

The solution is as follows:

It's good to restart the set-top box, that is, turn it off and turn it on.

Check the connector of your user line first to see if it is loose and plug it in tightly.

If the user line is good, check the cable TV user wallbox to see if the ferrule seat is loose and desoldered, if so, the corresponding treatment can be solved.

Cable television (CATV), also known as cable television, is developed from wireless television and first appeared in Pennsylvania, USA in 1950. Cable TV still retains the broadcast standard and signal modulation mode of wireless TV, and does not change the basic performance of the TV system. Cable TV sends the recorded program to the user through a cable (cable or optical cable), and then uses the TV to replay it without radiating electromagnetic waves into the air, so it is also called closed-circuit television.

Cable TV is a type of pay-TV that is paid for by the viewer rather than the funder.

You can check whether there is a problem with the connection of the RF (white) cable of the set-top box, which may be loose or aging;

It may be interference from other electronic devices or magnetic fields, you can check whether there are other electrical appliances working around the TV and turn them off;

You can check whether there is a problem with the connection of the RF (white) cable of the set-top box, which may be loose or aging; 2.It may be interference from other electronic devices or magnetic fields, you can check whether there are other electrical appliances working around the TV and turn them off; 3.

You can consult your neighbors if there is also an abnormal signal, and if the same problem occurs nearby, you can call the after-sales maintenance line.

1. If the connection line between the cable TV set-top box and the TV is loose or the contact is poor, resulting in loss of signal, you can check the connection line, reconnect it correctly, and fix it; 2. If the user misoperates, the signal source of the TV is switched to other modes, resulting in no signal on the display, you can press the signal source key of the TV to switch the signal source mode one by one until the picture of cable TV is restored; 3. The signal is lost due to the failure of the external cable TV signal transmission line or the server failure of the service provider, and it is necessary to wait for the service provider to repair before returning to normal; 4. The hardware failure of the set-top box or TV causes a sudden loss of signal, which needs to be repaired by contacting the corresponding after-sales service to solve it.

Questions. Over-the-air TV.

There is only a power cord. Oh. Questions.

There is also a white line.

I don't know what kind of thread it is.

Directly connected to the wireless network, there is still a box.

Questions. There is no box.

Wireless?

If a wireless signal encounters an obstacle during transmission, the signal strength of the wireless communication will be weakened. Especially after passing through metal obstacles, the attenuation of the wireless signal is very large. Experiments have proved that at a distance of 10 meters, the wireless signal can still reach the nominal maximum transmission rate after passing through two brick walls, but after passing through another floor slab, the transmission rate will only be half of the nominal rate.

It can be seen that the reinforced concrete wall will greatly weaken the wireless signal, and the reasonable placement of the wireless router (or wireless AP) has become one of the important factors affecting the strength of the wireless signal.

Pay attention to reducing interference,Try not to interfere too much with the signal of wireless routing in the home device,So that the smart TV will receive the signal more stable。 Like all wireless communications, wireless networks are subject to interference from other electromagnetic waves. Since the IEEE standard operates in this frequency band, and many industrial devices also work in this frequency band, there are many "opportunities" for wireless networks to be "harassed".

If there is a strong magnetic field in the vicinity, then the wireless network will definitely be affected. For example, some users put a wireless router near the microwave oven, only to find that when the microwave oven is working, the wireless network will have an inexplicable network failure, and the network will return to normal after turning off the microwave oven.

Summary. Carry out repairs. 1、It may be that the connection cable between the TV set-top box and the TV is loose or the contact is poor,In this case, the signal will be lost,The TV will show no signal。

Therefore, you need to check the connection cable between the set-top box and the TV, and you need to connect the connection cable firmly. 2. It may be that the signal transmission line is faulty, you need to check whether the signal transmission line is damaged, if it is damaged, it needs to be repaired in time, and the TV message can be restored after the repair.

What is the reason for the TV screen prompting "bad signal" and how to solve it?

Carry out repairs. 1、It may be that the connection cable between the TV set-top box and the TV is loose or the contact is poor,In this case, the signal will be lost,The TV will show no signal。 Therefore, you need to check the connection cable between the set-top box and the TV, and you need to connect the connection cable firmly.

2. It may be that the signal transmission line is faulty, you need to check whether the signal transmission line is damaged, if it is damaged, it needs to be repaired in time, and the TV message can be restored after the repair.

I'm sorry I don't understand, but can you elaborate on that?

3、It may be that the signal source of the TV is switched to other modes,When selecting the signal source,You need to choose the signal source that can display the TV signal。

Summary. 1. What are the reasons for the bad TV signal 1. The reasons for the bad cable TV signal are mainly caused by the following aspects: (1) The signal transmission distance of cable TV is relatively long, and there is no signal enhancement equipment in the middle, which leads to a relatively large loss of TV signal.

2) Other electronic devices in the home or interference from magnetic fields. (3) The cable TV line contact is not good, or the line is aging. (4) There are too many taped TVs, and no crossovers are used.

5) The quality of the signal source of cable TV itself is not good.

What is the reason for the TV screen prompting "bad signal" and how to solve it?

1. What are the reasons for the bad TV signal 1. The reasons for the bad cable TV signal are mainly caused by the following aspects: (1) The signal transmission distance of cable TV is relatively long, and there is no signal enhancement equipment in the middle, which leads to a relatively large loss of TV signal. 2) Other electronic devices in the home or interference from magnetic fields.

(3) The cable TV line contact is not good, or the line is aging. (4) There are too many taped TVs, and no crossovers are used. 5) The quality of the signal source of cable TV itself is not good.

2. If the cable TV signal is not good, then you should restart the set-top box, that is, turn it off and turn it on. If it still doesn't work, then you should check the connector of the user line at home to see if there is any looseness, if the user line is good, then you should check the cable TV user wallbox at home to see if the ferrule seat is loose and desoldered, and then solve the problem immediately. 3. If both the user line and the user wallbox are good, then you should check the 2 distributors.

It should be noted here that the brancher and the distributor are different products, and the brancher cannot be used at home. And the TV should use the best cable TV 75-5 coaxial cable, the inner conductor of this coaxial cable is all copper core, the diameter of the inner conductor is about 1mm, about 1 meter. In addition, you should use 2 distributors of a regular manufacturer.

If it is a cable TV home, you can report to the cable station for repair, and there are two other methods to try, 1Dismantle the entrance box and connect the indoor line directly to the entrance line (you need to know how to operate), if you can, it is very convenient. 2.

Buy a signal amplifier, but there will be some problems, first of all, this Dongdong needs to be powered on to work, which is very troublesome, and secondly, you can't expect to get too good results, because most of the household wired signal amplifiers that can be bought on the market are not as good as the business says due to the problem of ** profit.

Add a signal amplifier.

You move the line behind you and give it a try.

3. If the nearby residents are saving and renting the poor quality of the TV signal, find the operator to solve it.

4. Add a signal amplifier to improve the signal transmission attenuation caused by cable aging.

5. It may be a problem with the TV itself, and you can find a special section of the industry to solve it.