The domestic mobile TV box is green. What's the matter with no signal on the TV display?

1. If the TV screen shows the start-up screen of the set-top box and then prompts "No signal", this phenomenon proves that the audio-video cable (red, yellow and white) connection between the set-top box and the TV is basically ok. However, the TV RF input signal lines (note: not red, yellow and white) are not connected to the RF input port of the set-top box, or the TV RF input signal lines are not connected to the junction box on the wall, or there are other open circuits in the room.

2. If there is no start-up picture of the set-top box on the TV screen, and then there is only a blue screen without any text prompts, it is that there is something wrong with the channel setting of the TV. Please press the source key or AV/TV key with the TV remote control to switch the TV from analog TV channel to video channel.

3. If the digital TV set-top box doesn't work and the TV shows no signal, first check whether the power light in front of the set-top box is on. If not, please check whether the power plug of the set-top box is plugged in (to ensure that the socket has electricity) or whether the switch of the set-top box is turned on.

The TV box is a small computing terminal device. As long as you simply connect to the traditional TV through HDMI or color difference line, you can realize web browsing, network video playing and application installation on the traditional TV, and even project photos and videos on your mobile phone and tablet to the big screen TV at home. [ 1]?

At present, TV boxes can be divided into three categories, one is shopping-oriented TV boxes, and the other is TV boxes for young people. [2]? There is also a TV box specially designed for parents. [2]? It can be used to play Internet content on TV, which was previously called network wd tv in the Internet field, and was later defined as Internet TV set-top box by SARFT. Coupled with the smart TV that can access the Internet, it is collectively referred to as "Internet TV".

The insiders believe that as the country pays more and more attention to copyright issues, there will be fewer and fewer "free lunches" on TV boxes, and its market competitiveness will also be weakened. At present, most smart TVs have even surpassed TV boxes in function and use, and more manufacturers are willing to build set-top box functions into TVs in the process of new product development, so TV boxes will be "combined" with smart TVs in the future.

Film source

Everyone has higher and higher requirements for the clarity of TV. Many TVs also provide HDMI high-definition interface, and many box products can also meet this demand in hardware. However, different manufacturers and TV source cooperation agencies have different HD storage and technologies. Some manufacturers can provide HDTV viewing experience, but there are few sources to watch, which you should pay attention to when purchasing.

hardware configuration

Hardware configuration is also an important indicator, just like the computer we buy a mobile phone. The number of CPU cores is gradually upgraded from single core, dual core to quad core, and the memory capacity is gradually increased from 256 to 1G to 2G. In theory, of course, the higher the order of magnitude, the better, because it can keep up with the development speed, the machine will not be eliminated, but it is also necessary to consider the cost performance, do not blindly pursue high configuration, just enough.

operating system

At present, most of the boxes available in China are Android, which is also a relatively powerful and universal operating system. Many manufacturers optimize their UI according to the Android system, so we should pay attention to the optimization of their UI by different manufacturers, whether the operation is convenient, whether the system runs smoothly and so on.

extended function

Although the most important function in the selection of Android set-top box is to be able to play high-definition content, there are also some extended functions provided by the set-top box, such as whether the set-top box supports hard disk playback, whether it supports LAN function, whether it can browse pictures and websites, etc. It is also a factor that we should consider when purchasing. A good Android set-top box can not only watch high-definition video on the Internet, but also satisfy more network applications.

Firmware upgrade capability

The hardware technology of high-definition network set-top box is very mature, but the software still has room for further improvement, especially the strong compatibility and expansibility of network set-top box, which can be realized by firmware upgrade. Therefore, you need to consider the ability of firmware upgrade when choosing, and the product you bought at that time does not support a certain function, which can be solved by firmware upgrade, and some product failures can also be solved by firmware upgrade.

after service

As a new product, under the pressure of market competition, the development of chips, software and hardware is extremely fast, and problems are inevitable, so after-sales service is extremely important. How to make up for the congenital deficiency of products through after-sales service, improve customer satisfaction, reputation and brand loyalty, and then establish product reputation and enhance brand value is a problem that every player manufacturer should seriously consider.