Flat-panel TVs are divided into two types, LCD TVs and plasma TVs. Are flat-panel TV shopping strategies divided into two types? It is not necessary to do so because plasma TVs have gradually been withdrawn from the market. LCD TVs have made considerable progress in color saturation, response time, and contrast. Although there is still a certain gap compared to plasma TVs, LCD TVs have completely defeated plasma due to thinness, price, and other factors of LCD TVs. Television has become a fait accompli.
And now that the purchase of plasma TVs is very problematic after the sale, in the absence of exchangeable parts, maintenance personnel may advise consumers to redeem or purchase new ones. In this regard, the industry suggested that consumers should be cautious when buying plasma TVs, so it is best to buy flat-panel LCD TVs as well.
Flat TV shopping tips:
1, see service protection
Although the LCD LCD screen is not prone to problems, if it is a problem, maintenance is very troublesome. Most manufacturers offer warranty services ranging from 1 to 3 years. Some manufacturers even provide free on-site service and reduce maintenance costs during the warranty period. These small details are best asked before purchasing.
2, determine the bad point
The most common problem with LCD screens is “bad spots.†Although many products claim that their products “have no bad spotsâ€, various vendors have different standards for evaluating bad spots, and some manufacturers provide “as long as they have bad spotsâ€. Some services must be judged according to the relevant assessment criteria. How long does it take for a product to appear dead pixels to qualify as a product? A few points or more are considered to be dead pixels? These evaluation criteria must be made clear to avoid damage to equity. General high-quality LCD TVs have strict control over the number of bad spots.
3, the choice of brightness
Brightness refers to the brightness of the picture in cd/m2 or nits. There are two methods to increase the brightness at present: one is to increase the light passing rate of the LCD panel; the other is to increase the brightness of the backlight source.
Too low brightness is not conducive to clearly showing the video screen, and it is even more helpless for some dim scenes. In addition, the brightness uniformity of the screen is also very important, but usually not marked in the LCD TV product specification. Whether the brightness is even or not, and the number of backlight sources and mirrors is closely related to the configuration method. The TV with better quality has even brightness on the screen and there is no obvious bright area. In this case, it is easier to capture uneven brightness when the screen is switched to a black screen.
4, pay attention to the contrast
Generally, the contrast of the general entry screen is mostly 300:1, and that of the medium model is 450:1, 500:1. If you actually compare the image display capabilities of the entry-level and high-end models, you have a high-contrast screen. The gradient effect will be more pronounced, and the color performance will be more lively and abundant. This mainly depends on the needs of users.
5, the response time is not greater than 16ms
Due to the limitation of the imaging principle, the display response time of the LCD TV is relatively long, and it is reflected in the image that the residual image and the trailing of the moving image are prone to occur, which is unfavorable to the movie and television programs based on dynamic images. Of course, this indicator is as small as possible. Through the efforts of major LCD manufacturers, most LCD TVs have achieved a response speed of about 16ms. The appreciation of TV programs has not basically constituted a problem.
6, image resolution
The resolution of the LCD TV is fixed, please remember this! Unlike computer LCD monitors, you can adjust the resolution. The fixed resolution of the LCD TV is also its best resolution, and high resolution can easily be compatible with HDTV. For any video signal that is not the best resolution of the LCD screen, the LCD TV needs to convert the resolution of the image and then display the conversion.
At present, there are several common resolutions such as 800×600, 1280×768, and 1366×768.
7, the life is not less than 50,000 hours
Some low-cost LCD TVs have a short life span, so pay special attention. The life of the backlight is the life of the LCD TV. Generally, the life of the backlight of the LCD TV is more than 50,000 hours. In other words, if you use LCD TVs for an average of 5 hours per day, then the life span of 50,000 hours is equal to the 27 years you can use the LCD TV.
Flat TV buy error:
1, the bigger the screen, the better
We have already emphasized that TV screens that are too large or too small are not ideal and need to be decided based on your actual space and feelings. Here we provide a set of reference data: 32-inch TVs are more suitable than 2.5 meters, and 42-inch TVs are 3 meters is more suitable, while the 60-inch TV has a good visual experience at a distance of 4.5 meters. Of course, this data is for your reference only, not the standard value.
2, the more functions, the better
Not all features are needed for you, and the best for you. If you just watch TV, you don't need to buy an Internet-enabled TV product or even a smart TV, so it doesn't make any sense other than to add unnecessary expenses.
3, easily believe in the store's "flicker"
In fact, many promoters are not professional. They are only responsible for selling products. They are not experts in the industry. Therefore, they do not understand many technical problems. They must know that the purpose of shopping guide promoters is to sell televisions instead of troubleshooting. Experts, to distinguish whether a TV is good or bad requires you to do your homework before, actually watch its color effect, and through the major websites, forums to inquire about its reputation and related information.
4, "superior technology" promoted by superstitious manufacturers
As with the second point, many technologies are indeed very advanced and practical, but they may not be suitable for you. They may only increase your financial burden. Such as Sharp's unique "four basic colors" technology claims to be able to display richer, more vivid colors, but these products are also very expensive, ordinary three-color TV products can meet the daily needs of watching TV, playing games, there is no need In order to pursue this function, I sold iron.
5, "IPS hard screen" is the best
Said that IPS hard screen is best, this is only a propaganda means of the manufacturer, not other types of panel LCD TV is not good, otherwise Sharp's "Father of LCD" reputation has become worthless.
Flat TV purchase considerations:
1, to request a purchase invoice, in order to provide a basis for quality disputes.
2. Pay attention to whether the product instructions and product identification are well-established. According to the provisions of the “Product Quality Lawâ€, all products that are manufactured and sold in the country are subject to the specification of simplified Chinese, the name of the factory, the site and the certificate of conformity. Imported products also use the Chinese logo. The product shall have the name, trademark or identification mark of the manufacturer or responsible distributor, model code or model designation, power supply character code, rated input voltage, frequency, etc. Consumers must pay attention to whether the logo is complete and whether there is a Chinese manual when purchasing.
3, is to pay attention to whether the product's accessories are complete at the time of purchase. When purchasing, consumers should check whether the accessories are complete based on the packing list or instructions.
4, there is no need to blindly pursue the indicators, so as not to fall into a trap, more harm than good, especially because LCD TVs are the current consumer hotspots, many companies in advertising, you can exaggerate performance indicators, such as brightness, contrast and perspective, the current for these In terms of indicators, companies and businesses are over-hyped, and the indicators provided by them are often obtained under the limit state. It does not make much sense from the actual viewing.
And now that the purchase of plasma TVs is very problematic after the sale, in the absence of exchangeable parts, maintenance personnel may advise consumers to redeem or purchase new ones. In this regard, the industry suggested that consumers should be cautious when buying plasma TVs, so it is best to buy flat-panel LCD TVs as well.
Flat TV shopping tips:
1, see service protection
Although the LCD LCD screen is not prone to problems, if it is a problem, maintenance is very troublesome. Most manufacturers offer warranty services ranging from 1 to 3 years. Some manufacturers even provide free on-site service and reduce maintenance costs during the warranty period. These small details are best asked before purchasing.
2, determine the bad point
The most common problem with LCD screens is “bad spots.†Although many products claim that their products “have no bad spotsâ€, various vendors have different standards for evaluating bad spots, and some manufacturers provide “as long as they have bad spotsâ€. Some services must be judged according to the relevant assessment criteria. How long does it take for a product to appear dead pixels to qualify as a product? A few points or more are considered to be dead pixels? These evaluation criteria must be made clear to avoid damage to equity. General high-quality LCD TVs have strict control over the number of bad spots.
3, the choice of brightness
Brightness refers to the brightness of the picture in cd/m2 or nits. There are two methods to increase the brightness at present: one is to increase the light passing rate of the LCD panel; the other is to increase the brightness of the backlight source.
Too low brightness is not conducive to clearly showing the video screen, and it is even more helpless for some dim scenes. In addition, the brightness uniformity of the screen is also very important, but usually not marked in the LCD TV product specification. Whether the brightness is even or not, and the number of backlight sources and mirrors is closely related to the configuration method. The TV with better quality has even brightness on the screen and there is no obvious bright area. In this case, it is easier to capture uneven brightness when the screen is switched to a black screen.
4, pay attention to the contrast
Generally, the contrast of the general entry screen is mostly 300:1, and that of the medium model is 450:1, 500:1. If you actually compare the image display capabilities of the entry-level and high-end models, you have a high-contrast screen. The gradient effect will be more pronounced, and the color performance will be more lively and abundant. This mainly depends on the needs of users.
5, the response time is not greater than 16ms
Due to the limitation of the imaging principle, the display response time of the LCD TV is relatively long, and it is reflected in the image that the residual image and the trailing of the moving image are prone to occur, which is unfavorable to the movie and television programs based on dynamic images. Of course, this indicator is as small as possible. Through the efforts of major LCD manufacturers, most LCD TVs have achieved a response speed of about 16ms. The appreciation of TV programs has not basically constituted a problem.
6, image resolution
The resolution of the LCD TV is fixed, please remember this! Unlike computer LCD monitors, you can adjust the resolution. The fixed resolution of the LCD TV is also its best resolution, and high resolution can easily be compatible with HDTV. For any video signal that is not the best resolution of the LCD screen, the LCD TV needs to convert the resolution of the image and then display the conversion.
At present, there are several common resolutions such as 800×600, 1280×768, and 1366×768.
7, the life is not less than 50,000 hours
Some low-cost LCD TVs have a short life span, so pay special attention. The life of the backlight is the life of the LCD TV. Generally, the life of the backlight of the LCD TV is more than 50,000 hours. In other words, if you use LCD TVs for an average of 5 hours per day, then the life span of 50,000 hours is equal to the 27 years you can use the LCD TV.
Flat TV buy error:
1, the bigger the screen, the better
We have already emphasized that TV screens that are too large or too small are not ideal and need to be decided based on your actual space and feelings. Here we provide a set of reference data: 32-inch TVs are more suitable than 2.5 meters, and 42-inch TVs are 3 meters is more suitable, while the 60-inch TV has a good visual experience at a distance of 4.5 meters. Of course, this data is for your reference only, not the standard value.
2, the more functions, the better
Not all features are needed for you, and the best for you. If you just watch TV, you don't need to buy an Internet-enabled TV product or even a smart TV, so it doesn't make any sense other than to add unnecessary expenses.
3, easily believe in the store's "flicker"
In fact, many promoters are not professional. They are only responsible for selling products. They are not experts in the industry. Therefore, they do not understand many technical problems. They must know that the purpose of shopping guide promoters is to sell televisions instead of troubleshooting. Experts, to distinguish whether a TV is good or bad requires you to do your homework before, actually watch its color effect, and through the major websites, forums to inquire about its reputation and related information.
4, "superior technology" promoted by superstitious manufacturers
As with the second point, many technologies are indeed very advanced and practical, but they may not be suitable for you. They may only increase your financial burden. Such as Sharp's unique "four basic colors" technology claims to be able to display richer, more vivid colors, but these products are also very expensive, ordinary three-color TV products can meet the daily needs of watching TV, playing games, there is no need In order to pursue this function, I sold iron.
5, "IPS hard screen" is the best
Said that IPS hard screen is best, this is only a propaganda means of the manufacturer, not other types of panel LCD TV is not good, otherwise Sharp's "Father of LCD" reputation has become worthless.
Flat TV purchase considerations:
1, to request a purchase invoice, in order to provide a basis for quality disputes.
2. Pay attention to whether the product instructions and product identification are well-established. According to the provisions of the “Product Quality Lawâ€, all products that are manufactured and sold in the country are subject to the specification of simplified Chinese, the name of the factory, the site and the certificate of conformity. Imported products also use the Chinese logo. The product shall have the name, trademark or identification mark of the manufacturer or responsible distributor, model code or model designation, power supply character code, rated input voltage, frequency, etc. Consumers must pay attention to whether the logo is complete and whether there is a Chinese manual when purchasing.
3, is to pay attention to whether the product's accessories are complete at the time of purchase. When purchasing, consumers should check whether the accessories are complete based on the packing list or instructions.
4, there is no need to blindly pursue the indicators, so as not to fall into a trap, more harm than good, especially because LCD TVs are the current consumer hotspots, many companies in advertising, you can exaggerate performance indicators, such as brightness, contrast and perspective, the current for these In terms of indicators, companies and businesses are over-hyped, and the indicators provided by them are often obtained under the limit state. It does not make much sense from the actual viewing.
Building wire is an electrical wire that is used in the construction of buildings. It is a type of electrical wire that is designed to be used in the wiring of buildings, including homes, commercial buildings, and industrial facilities. Building wire is typically made of copper or aluminum and is available in a variety of sizes and types, including solid and stranded wire.
Building wire is used to carry electrical power from the source to the electrical devices and appliances throughout the building. It is typically installed in walls, ceilings, and floors, and is designed to be safe and reliable. Building wire is also used in the installation of electrical systems, including lighting, heating, and cooling systems.
Building wire is an essential component of any electrical system, and it is important to choose the right type of wire for your specific needs. When choosing building wire, it is important to consider factors such as the size of the wire, the type of insulation used, and the voltage rating of the wire. It is also important to work with a qualified electrician to ensure that the wire is installed correctly and safely.
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