What is HDTV?

"High Definition" is a type of digital TV, also called HDTV. Digital TV in China is divided into two types, one is standard definition and the other is high definition. The resolution of standard definition is 720 × 576 pixels, which is formulated with reference to the theoretically highest definition that can be achieved by analog PAL televisions in China. HDTV can be described as 1920 × 1080 50 i, which means that the resolution is 1920 × 1080 pixels, the field frequency is 50 frames, i is interlaced.

HD TV

"High Definition" is a type of digital TV, also called HDTV. My numbers

HDTV HDTV

HDTVs are just one of the devices that watch HD channels. Users buying HDTVs only ca nt guarantee to watch HD channels, because HDTV channels also need one

High-definition televisions are very different from ordinary televisions in the way they are displayed. The former uses a dedicated high-definition picture tube, instead of interlaced and progressive scanning as it is commonly called, but a point by point image. along with

HD TV Dust Removal

After the TV is used for a long time, a layer of dust will accumulate in the machine. Excessive dust will affect the heat dissipation of the components, damage the insulation between the components and the circuit, and even cause high-voltage discharge and ignition. It is a job that can't be ignored in maintaining the TV. Dust can be removed by vacuum cleaner or air blower. Carefully remove the cover, and blow off the dusty part of the machine with the air pump with the metal outlet unplugged, until it is exhausted. Be careful not to touch the electrical components. The hard-to-remove places can be removed with a brush, and must not be scrubbed with a damp cloth.

HD TV failure warning

Immediately turn off the power and notify the professionals for maintenance to avoid accidents.

(1) After turning on or during use, you can hear the sound of "snap" or even odor. If you do not turn off the device immediately, it may damage the components or cause the picture tube to burst. This is the high voltage part of the TV set on fire, which causes the oxygen in the air to generate a little ozone under the action of electric sparks.

(2) During use, the TV suddenly emits smoke or scorching smoke. In case of severe open flame, the power should be cut off immediately, all surrounding items should be removed, and the TV should be covered with fine sand or wet quilts, blankets and other textiles to isolate Air circulation, extinguishing fire extinguishers, and preventing the explosion of the picture tube caused by burns to hurt people. However, it is strictly forbidden to use water to extinguish the fire, so as to avoid the sudden burst of the picture tube.

(3) The brightness of the TV suddenly dims, and the entire picture shrinks. This is caused by a power failure. Shut down in time to prevent the fault from expanding.

(4) After turning on the machine, irregular black dots or black lines appear on the screen, and it jumps for a long time. You can turn the channel selection button to neutral to observe. If it still does not disappear, you should turn off the machine immediately.