Color TV, simply a color TV. This concept is compared to black and white TVs, because black and white TVs can only display two colors of black and white.In fact, all color TVs are collectively referred to as color TV, but what we usually call TV refers to CRT imaging tube TV and CRT backstop TV.
Which brand of color TV is good
The first one is the W-S385 color TV produced by Lehua.In this color TV, there are three different operating interfaces. It is set according to the usage habits and content preferences of different ages, which meets a young and small TV habits.Its adult model can configure and health -related programs for parents, as well as puzzle teaching software provided by children. Of course, there is also the configuration of sound news, which facilitates the use of the elderly.Lehua W-S385 uses new technologies, running is extremely fast. Multi-core programs can ensure that the TV is not stuck, and the operation is smoother and more comfortable.At the same time, wireless Internet functions are also set inside the TV to watch more TV programs.The screen itself, the color is natural, and the picture and the picture are too smooth.The sound quality also achieves the sound quality of the heavenly level with great technical support.Moda color TV comes from the MJ85 color TV produced by Moda merchant, which is a private custom TV that belongs to your.Not only can you bring you a visual feast, but also your voice feast.The theater function of the brands color TV can be updated in time, allowing you to keep seeing a new shocking blockbuster.Of course, there are rich educational resources inside, which can help children in the family get better education while entertaining.Energy -saving is also more power -saving, the picture performance is more gorgeous, and the fuselage itself is very thin and light.
Color TV price
Skyworth 29d18HT Reference Price: ￥ 2462 TV Type: CRT TV Screen Size: 29-inch screen ratio: 16: 9 Maggiex Tube Technology: Ultra-thin high-definition of Sony KV-HR36M90 Reference Price: ￥ 14000 TV Type: CRT pure flat TV screen size:36 -inch screen ratio: 16: 9 Changhong PF21300 Reference price: ￥ 890 TV type: CRT TV screen size: 21 -inch screen ratio: 4: 3 Visiting Tube Technology: PF (SLIM ultra -thin image tube) Preparatory Channel: 236 Kangjia P21SA390Reference price: ￥ 699 TV Type: CRT TV screen size: 21 -inch screen ratio: 4: 3 Visiting Tube Technology: Pure Platform Midth Pre -selection Channel: 256 One: 256
Color TV repair
(1) The "current method" of the current measurement method is mainly used to determine whether the line output level has an overcurrent failure and whether the line output transformer is locally short -circuit.During maintenance, it is usually a point in the output -level working voltage supply circuit, and then the current table is serialized at the disconnecting point according to the current flow.Figure 2 is a diagram of the current output -level working current of the current method.The range of the multimeter is 2.5A, the measurement results and explanation problems are as follows: 1. The current current is greater than 50mA during measurement that the output level has serious breakdown or short circuit failure.It can be roughly judged that the output transformers local short -circuit, line output tube breakdown, and reverse capacitor breakdown.2. No current, that is, the scales are not moving. This indicates that the measured output -level circuit measured is not working or the output tube is opened.3. The current output -level working current is generally 350 to 400mA, indicating that the output level and the oscillating level are normal.
Color TV principle
The main contents of color TV principles include TV transmission image principles, composition and sending of all TV signals, color TV codes and decoding principles, high -frequency tuning, mid -frequency channel and audiovisual channel, PAL decoder, line synchronization and field synchronous scanning circuits, color imaging pipe tubeThe structure and its auxiliary circuits, the power supply and system control circuit, in, the digital TV principle introduces the principles of digital TV concepts, video codes and digital TV, which reflects the direction of the current development of TV technology.

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