Today, we have to dismantle the most popular and most concerned smart TV, Xiaomi TV 3, to see what its internal structure is and what the ultra-low price has. Taking into account the millet TV 3 uses a split design, and the structure of each part is relatively complex, so the dismantling will be divided into two parts, the first is dismantling millet TV 3 TV (also can be understood as the display) part Next, disassemble the host ("box" + audio) section of the millet TV 3 .
In our impression, the structure of the TV should be very simple. It is nothing more than a screen. There is a main board inside. Especially when watching TV is so thin, Koala has a similar idea, but the result is not the case. Prior to the dismantling, there was no reference to the information. Although the site was also dismantled, it merely won the plastic shell underneath the back of the TV. Then there was no more. The koala is also dismantling in the same way. When the plastic shell is opened, the first feeling is still a simple structure, and the feeling is that the motherboard is left. After removing the motherboard, there are screws at the bottom to remove. In this way, the final parts were covered with a long conference table. Although the LCD panel and LED backlight accounted for a large part, but rough estimate, the structure of the millet TV 3 can be divided into at least five parts: plastic Rear shell + motherboard layer + metal frame shell + LCD panel layer + LED backlight layer.
Afterwards, Koala recalled that the reason for the difficulty in predicting miscalculations was mainly because Xiaomi TV 3 was too thin, and I felt there was nothing in it. How did this ultra-thinness be done? The reason is that the millet TV 3 uses a unique split design. As the smart TV, the core processing chip and the system layer, that is, the smart part, should have been integrated in the display. They are one of the main factors that affect the thickness. . Imagine that the motherboard and the chip of the monitor itself, plus the processor, must occupy a certain amount of space, and the millet TV 3 is to peel off the relevant smart parts and audio from the TV and save more space.
Open the back of the plastic back shell, you can see the internal structure of millet TV 3 or unconventional whole, PCB board material is good, not the slightest sense of roughness, printed above millet LOGO, appears to be a custom product. The interior of the TV is clean and tidy, there is no messy route, each has a separate path planning, to achieve a consistent inside and outside. The connections between the motherboards are also very tight. All the cables are tightly fixed. Compared to mobile phones, it is difficult to dismantle them. In particular, the power supply and power supply lines need special tools. Improper handling may cause irreparable damage to the cables and the motherboard. . On the whole, the designer also took a certain amount of consideration for the stability and robustness of Xiaomi TV 3. The most prominent performance is that it uses a large number of different kinds of screws. A rough estimate of it is that if you want to tear down the LCD panel, At least 50 screws have to be unscrewed, and more than 5 types are required. In order to ensure the stability of the base, the corresponding part uses a thick metal piece as a connection base, and there are two rows of thicker screws for reinforcement.
Image processing, signal output, dynamic image compensation, and area backlight control are integrated on the square board on the left side. The plate is black in its entirety. The upper MStar 6M60 image processing chip is coated with silicone grease, and a metal heat sink is added. The latest millet router cooling system is similar. On the right is the main circuit board of the TV. The various components including the power supply are arranged on top of each other, which is also a black board design. As for the middle part, it is the control chip of the liquid crystal module, which has a separate metal protective cover. We dismantled the 55-inch version of the millet TV 3, which has a screen resolution of 4K. The panel supplier has LG and Samsung. After removing the metal protection cover, you can see the machine's LCD module. The control chip is produced by Samsung, and this LCD panel is also a product of Samsung. As for the ratio of Samsung and LG, it is still unknown, and we have no more products to compare. In addition, the lower frame of the fuselage is a side-entry type LED backlight module. To remove the panel further, it is necessary to remove the fixed metal plate here.
After the dismantling was over, apart from the above, there was a discovery and a little feeling. The discovery was about the border. Before the real machine was not seen, many people believed that the only part of the millet TV 3 that was drilled and cut on the upper and left and right sides was the metal material, including the koala. This is not actually the case. The four frames that we can see are individually detachable parts. They are all made of metal, but they have a black coating on the outside. They look less metallic, and after scraping off the coating You can see the metallic luster inside. One thing I feel about is the LCD panel. During the entire dismantling process, the most difficult one is to disassemble the LCD panel and the LED backlight module. The TV itself is thin enough. The two parts are thinner, especially the LCD panel, just like a piece. Like a thin glass, although it has a certain degree of flexibility, it needs to be very careful when dismantling it.
In addition, Koala also found adjustment and change of the millet TV 3 in two details: 1, the base, that is, the two figure-shaped metal brackets, using a standard fixed position, with the previous two millet TV 2 adjustment design Different; 2. Canceled the trackpad at the bottom of the screen in the millet TV 2 generation. For these two changes, Koala has doubts in her mind. For this reason, we specifically contacted the engineer of Xiaomi TV 3 to answer these two questions. Among them, the design of the base part has actually changed when Xiaomi TV 2S was launched, mainly due to structural and stability considerations. Whether Xiaomi TV 2S or Xiaomi TV 3, the body size is relatively large. The requirements for the weight and center of gravity of the two metal brackets are also higher, and the fixed position + screws will greatly increase the reliability and the structure is also more scientific. As for the cancellation of the trackpad, it is still a result of the new split-type design adopted by the Millet TV 3. Before the on-TV key, volume adjustment, and more new function keys were all moved to the mainframe, there was no button on the TV monitor. It will be more simple and pure, just like Apple's design concept, using as few keys as possible and more human-computer interaction through software and systems.
Well, see here, I believe we have a more in-depth understanding of millet TV 3. In the past, when dismantling a mobile phone, I ended up talking about maintenance problems. However, TVs are not the same as mobile phones. This kind of big-ticket proposal suggests that you don’t even try to dismantle them by yourself. If you have problems, contact customer service directly. Xiaomi will provide on-site inspection and maintenance services. . After that, we will dismantle the host of the millet TV 3 and see if this split is what happened. Well, we won't see the next release!
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