crt tv resolution introduction

Introduction: 80 years later, remember our childhood black and white TV? That square, thick black shell TV, people at home are extraordinarily cherish it, this black and white TV is actually called crt TV, with the development of the times, crt TV from black and white TV to color TV, the body is getting thinner and thinner, although now the rapid development of LCD TVs, but the crt TV with its own advantages still has a place in the market, today, I will be for Today, I will introduce crt TV and its resolution.

Crt TV Introduction

Crt TV is the earliest television, in the 1970s and 1980s, people will be very proud of their own home has a crt black and white TV, everyone in the family will be on the TV is very cherish, the mothers will be special for it to do a TV cover, for fear that the TV is dirty or bad. After decades of development, crt TV is not only not eliminated, but also in progress, continuous improvement, from black and white TV sets into color TV sets, better performance, more stylish appearance, now, there are many people like to buy crt TV.

Features of crt TV sets

The crt TV sets on the market now are very mature, with high brightness, clear picture, high color resolution, and large field of view, plus the price of crt TVs is generally cheaper, which can be said to be a very high cost-effective, and therefore, many people still like to Choose crt TV, but crt TV also has many limiting factors, it is difficult to want to LCD TV as thin and light, the larger the body, its weight and volume is the greater, the more bulky, which limits the crt TV size bigger, the largest crt TV on the market is only 38 inches.

Resolution of crt TV sets

In our country, crt TV sets are generally PAL, the original resolution of this kind of TV set is 720×526, the original resolution of SDTV crt TV sets is 720×480, the display resolution is 640×480 or 704×480, EDTV crt TV sets have the same original resolution and display resolution as SDTV crt TV sets, but it has the advantage that the image does not flicker, is clearer and more stable. The crt TV set with the highest clarity is the HDTV system, which has two kinds of resolution: 1920×1080 and 1280×720, which is the most advanced crt TV set.

Maintenance

Crt TV maintenance is very important, especially to pay attention to the dust, usually you can pay attention to the TV cover when the TV is not used, if the dust has accumulated a lot of dust, you have to use a vacuum cleaner or a brush to remove the dust in a timely manner, the long-term accumulation of dust will affect the work of the TV, and damage the TV accessories. Damage to the TV accessories.

If the TV in the use of the process of smoke, brightness suddenly darkened, long time frequently jumping or issued a "pop" sound to quickly turn off the TV, sent to a professional TV repair out of the inspection, maintenance.

Dust

Television use for a long time, the machine will accumulate a layer of dust, too much dust affects the components of the heat emitted, damaging the insulation of components and circuits, and even produce a high-voltage discharge phenomenon of fire, serious damage to the television, and therefore dust and dust is the maintenance of the television can not be ignored. Accumulated dust can be removed by vacuum cleaner or blowing with a pump. Carefully remove the cover, and use the pump with the metal nozzle to blow air into the dusty part of the set until it is blown out. Be careful not to touch the electrical components. It is not easy to remove the dust of the place can be eliminated with a brush, do not use a wet cloth to scrub.

Failure omen

Should immediately shut down the machine and disconnect the power, notify the professional overhaul to avoid accidents.

(1) after the power on or use, hear "popping" sound, and even have a bad smell, at this time, if you do not immediately turn off the machine, it is possible to damage the components or make the tube blow up. This is the high-pressure part of the TV set in the fire, so that the oxygen of the air under the action of electric sparks to generate a little ozone.

(2) use the process of television suddenly smoke or smell of burnt smoke, serious open fire should immediately cut off the power supply, clear the surrounding natural objects, with fine sand or wet quilt, blanket and other textiles wrapped around the television to isolate the air circulation, extinguish the fire, while preventing the combustion caused by the explosion of the tube injury. But it is strictly prohibited to use water to extinguish the fire, so as to avoid the sudden cold burst of the tube.

(3) the brightness of the TV suddenly darkened, the whole picture shrinkage, which is caused by power supply failure, we must turn off the machine in time to avoid the expansion of the fault.

(4) after the power on, irregular black dots or black lines appear on the screen, jumping for a longer period of time, you can dial the channel selector knob to neutral to observe, such as still does not disappear, you should immediately turn off the machine.

The above is about crt TV resolution, I hope it can help you!

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