All netizens believe that they often suffer from the fear of choice like the author. They always don't know how to choose when they need to buy various products. They are always moved and unable to let go of various hype advertisements given by manufacturers, When choosing products, I often ask in my mind "What's the difference between cheap products and expensive products? How can I spend the least money to get a satisfactory product?". If you are a netizen with strong hands-on ability and love to disassemble, compared with the previous question, it will be much easier for you, because most products can see the truth to a large extent through dismantling their internal hardware. Just recently, my hands are itching, so let's take a disassembly report to experience the 55 inch PRO of Microwhale TV from a place that consumers can't see at ordinary times.

1、 Micro Whale TV 55 inch PRO appearance

First, let's talk about the front appearance of Microwhale TV 55 "PRO, which is the same as the mainstream large-size LCD TV on the market at present. The front of Microwhale TV 55" PRO also uses an ultra narrow aluminum alloy frame of about 6mm on the top, left and right respectively. The metal surface has been gray sanded, and the whole body looks very calm and atmospheric. The R chamfers around the frame are processed by high gloss cutting, and the processed R chamfers echo the overall matte material to further enhance the masculinity of 55 PRO.

The narrow edge of about 6mm makes the audience more immersive when watching TV.

The color LED indicator on the lower left side of the front protrudes slightly from the bottom of the TV. On the system setting page, you can set your own color according to your personal preferences. The brightness of the indicator light is moderate, and it will not be dazzling when watching at night.

As an emerging Internet brand, Microwhale WHALEY has been accepted by more and more users.

The diameter of a dime (about 15mm) at the thinnest part of the side is also the normal thickness of the current straight down LED backlight.

Micro Whale TV 55 inch PRO side shape is in the form of a thin curve from top to bottom. Personally, the side curve adds a little curve beauty to the metal masculinity of the whole machine.

The whole rear shell is made of frosted plastic, which inevitably makes people feel cheap. There is a row of concealed vertical strip cooling holes in the upper middle part. The layout of other interfaces and power cord sockets is quite different from that of traditional brands. The hole size of the back rack is 20cm * 20cm, and it is officially recommended to use the dedicated rack for micro whales. However, according to the actual measurement of the author, the common rack with an application size of 20cm * 20cm on the market can also be used.

The randomly distributed taupe trident metal tripod has the same color as the body, so it will not be incompatible after installation. There are two thick plastic anti slip pads at the bottom of each tripod, which are both anti slip and can well protect the glass TV cabinet when placed normally. The installation method of the whole tripod is quite stupid, and it can be easily completed after reading the installation instructions.

2、 Hardware disassembly

After briefly introducing the overall appearance of Microwhale TV 55 inch PRO, let's move on to today's main body, hardware disassembly. Under the declaration in advance, the disassembly and assembly of LCD TV in the standard process need to wear an electrostatic bracelet and be completed in the dust-free workshop, otherwise it is easy to cause electrostatic damage to electronic components and LCD glass, so remind the watchers not to imitate them at home.

The 55 inch PRO of the micro whale TV was disassembled at home, so the whole process was completed with only one screwdriver.

First, select a flat and clean plane, such as the floor and table (if large enough). Before putting the TV down, carefully check the plane for foreign objects (especially small and hard foreign objects such as screws), and then slowly place the TV on the plane. The next step is to remove a number of obvious screws around the back cover. There is no difficulty as long as you are careful in the process.

After unscrewing the screws, since the rear housing is not connected to the main body with buckles or other components, it is very easy to separate the whole rear housing. In addition, it needs to be emphasized that the one-time warranty sticker of the original manufacturer must be damaged to disassemble the machine. Damage to the sticker means that you will lose the one-year warranty service of the Microwhale manufacturer. So again, don't dismantle the machine unless you have to.

After removing the back cover, 90% of the hardware of the entire LCD TV is displayed in front of everyone, and the remaining 10% is the LCD glass panel and backlight module. From the overall picture, we can see that the layout of each circuit board and wiring of the 55 inch PRO of Microwhale TV are very formal, which is more consistent with the traditional LCD TV manufacturers. We can find out the reasons from the official statement of Microwhale that although the brand "Microwhale" is an emerging brand, they are looking for "TPV" with rich experience in the LCD TV industry to produce TV It can be seen from the OEM that if the logo is covered, this is a traditional LCD TV, so we don't have to worry too much about the product quality of "Micro Whale" TV. After all, the LCD TV industry still needs some professional knowledge.

The power board on the left side is fixed by six screws, two of which are responsible for the cold and hot terminal grounding. The overall layout of the components is very neat and orderly, and the inductance and capacitance with slightly larger volume have very reasonable and unique arrangements. From such grounding details, we can also see that the circuit board design department of Microwhale TV has rich experience.

The main board power supply and backlight power supply connecting lines are equipped with anti falling buckles, and the strength of the connecting buckles is moderate.

In order to meet the requirements of cross electric distance, regular LCD TV manufacturers will add film insulation layer and adhesive base between the power panel and the fixed metal to ensure the insulation distance. From the actual disassembly, it can be seen that the 55 inch PRO of Microwhale TV has no ambiguity in these safety requirements.

In order to ensure the product quality and safety, the traditional green circuit layer is used on the back of the 55 inch PRO power board of Microwhale TV. The board shall have UL 94-V0 flame retardant grade, that is, the sample can quickly self extinguish to no burning melt dripping within 10s after the flame is removed after ignition (that is, the burning melt dripping on the cotton pad one foot below the test sample cannot ignite cotton). Of course, unimpeded environmental RoHS certification is also essential.

Material details: ST10P06G rectifier bridge stack of "Taiwan Office (Taiwan Semiconductor)".

Material details: fuse and varistor.

Take a closer look at the high-voltage circuit of the power supply. There are complete protection circuit designs. There are many electronic devices protecting the normal and stable operation of the power supply, such as varistor, thermistor, ballast bridge stack, fuse, etc. At the same time, large capacitors are used in many places, especially the 12V DC part and LED backlight output part. Both switch tube and MOS tube are covered by large area heat sink to ensure the stability of long-term operation.

Next, let's take a look at the motherboard of the signal processing motherboard on the left. This part is mainly responsible for the intelligent core of the LCD TV. The CPU in the middle is covered by a heat sink. Maybe the manufacturer has taken into account the better heat dissipation problem. The heat sink is directly welded to the motherboard, and ordinary users remove it independently. Micro whale English LOGO is printed beside the heat sink. USB, SD card and other interfaces are on the right, and video input interface and antenna interface are on the bottom,. The original motherboard is neatly arranged, looks clean and tidy, and the workmanship is quite like a big factory.

You can't remove the heat sink to see the style of the CPU. You can only explain the chip through theoretical data. First of all, the chip model listed on the official website of Microwhale is MSD6A828EV-ST of MStar (Morningstar). At present, there is almost no detailed introduction of this chip. It is speculated here that this chip may be an improved version of MSD6A828. Since there is no specific model information, here are the relevant parameters of MSD6A828:

A four core processor designed with Cortex A53 architecture, with a main frequency of 1.4GHz,

The Mali450MP4 (4+2) 6-core GPU supports the latest Android 5.0,

Support full 4K format hard decoding such as H.264, VP9 and H.265, especially H.265 4K@60Hz 10bit UHD decoding, take all 4K film sources,

It supports high dynamic range HDR and the latest HDMI2.0a specification.

The smart TV with MStar's fourth generation high-definition image quality engine has greatly improved the definition and video effect. The high-speed image algorithm has achieved real-time optimization of each image frame. The image is clearer and sharper, and the transition of details is smooth, bringing consumers top audio-visual enjoyment.

Before Morningstar launched MSD6A928 chip last year (2015), The MSD6A828 should be considered as the flagship chip in LCD smart TV, but after the launch of the MSD6A928, the MSD6A828 has declined to be a medium and high-end chip. In front of the MSD6A928, the biggest advantage of the MSD6A828 is that it is cheap and cost-effective. From the perspective of actual use, this chip can ensure high fluency and viewing effect when watching 4K videos and playing games. It can also be seen from the popularity of this chip selected by other manufacturers. To deal with Microwhale, there are LeEco Super TV 3 X55, Vicuka U50/U55C, Xiaomi TV 2, etc.

After talking about the CPU, look at the GPU. The Mali-450 GPU on the 55 inch PRO of Microwhale TV was a very mature chip launched in 2012. At present, this chip is applied to various Android tablets, mobile phones and smart TVs. In 2016, if you look at this image processing chip alone, it can only be considered as a medium level, but it will not process too many large games at most For the smart TV of 4K movies, the original powerful MSD6A828 CPU is enough to cope with it. If Mali-450 is added, it will be a icing on the cake. Therefore, the 55 inch PRO of Microwhale TV with Mali-450 GPU can be quite competitive in price and enhance the user experience.

Although smart TV storage space is not as important as devices such as mobile phones and tablets, it is reassuring to buy smart TV and install several third-party film and television applications into it because everyone knows why. In terms of its own storage space, Microwhale TV 55 inch PRO is equipped with Samsung 16G eMMC 5.0 flash memory chip KLMAG2GEND-B031. This chip is also a mature product, which has been used in mobile phones, tablets and other products.

Memory capacity and quality are important elements that affect the smoothness of multi program operation of equipment. Microwhale TV 55 inch PRO is equipped with 2G DDR3 dual channel non removable memory. The specific model and brand is H5TQ4G63CFR DDR3 cache chip produced by HYNIX, with a speed of 1866MHz. From the actual use, 2G memory space can ensure free and fast switching between multiple programs without any sense of stuttering. There is no need to introduce the product quality of Hynix memory too much. Its products have also been tested for many years in the market, and the product quality is relatively excellent.

These are the components that can be seen intuitively on the signal board. In general, the materials used on the signal board by the Micro Whale TV 55 inch PRO are basically reliable well-known suppliers in the LCD TV industry at home and abroad who have passed the market test for many years. Therefore, WTV55K1 is more than traditional household appliances in terms of signal motherboard.

Strictly speaking, the LCD driver board is a part of the LCD glass. To put it simply, this board is also produced by the LCD screen manufacturer. Due to technology and adaptation reasons, there are almost no drive boards produced by auxiliary manufacturers on the market. What can be bought in the market are original parts. The difference is only that the parts are disassembled or new. Since the 55 inch PRO of Micro Whale TV uses LG's 4K screen, the LCD driver board is also produced by LG. In addition, under a brief introduction, the LCD driver board is responsible for the general LCD TV screen related major failures such as the splash screen, ribbon, black screen, and white screen. In my experience, if the driver board is damaged, it is difficult to repair it by replacing the whole piece directly.

The main chip model is LG Display TLi2380EP.

The WI-FI and Bluetooth 4.0 modules, with the word "Micro Whale LOGO", should also be customized boards. The shielding cover above is soldered on the circuit board. We don't know exactly what chip is used. From the perspective of actual disassembly, the WIFI module does use the 2X2 dual receiving and dual transmitting antenna design, which supports 2.4GHz and 5GHz dual frequency. According to the subsequent use, the compatibility of the Bluetooth module is also strong. The Bluetooth watch of other brands at home is very stable and functional after being connected to the 55 inch PRO of Microwhale TV.

The sound quality is also a hardware aspect that everyone cares about. Instead of talking about the sound effect, I will talk about my feelings from the speaker results. Everyone should have this feeling. The built-in sound quality of the ultra-thin LCD TV is generally not as good as that of the previous CRT TV. The most direct feeling is that the sound produced by the LCD TV sound is dry and flat. From a professional perspective, This kind of sound quality performance is caused by the lack of bass. If the speaker wants to produce bass, it needs to reserve a large enough position to place the bass speaker. At present, the thinner and thinner LCD TVs obviously do not have such hardware conditions. How can we improve the sound effect in a limited space, This is the method adopted by Microwhale TV 55 inch PRO and most LCD TV manufacturers on the market at present. The built-in speakers are designed as dual dividers of high pitch and low pitch, which has better sound quality performance than full frequency speakers. In terms of position design, the tweeter adopts a 45 angle design, and the sound is pushed out from the front, while the middle and low pitch speakers are positioned downward, and the sound is pushed out from the side. The official parameter of the speaker is the power of 2 × 12W, and the silk film tweeter is added to support Dolby Digital, Dolby Digital Plus and other sound effects.

In terms of keys, the 55 inch PRO of Microwhale TV adopts the current mainstream four-way keys. It can be seen from the disassembly that the multi-color LED indicator light is exported to the outside of the enclosure through the transparent plastic bar, which is very scientific.

The disassembly of the main board is about the above content. At present, many disassembly evaluations are simply completed by disassembling this part, but a LCD TV has only completed 50% of the workload here, and the remaining 50% is the LCD glass and backlight module. I originally wanted to disassemble the LCD glass part of this TV for everyone to see and explain, However, due to the limited space at home, there is no place to place LCD glass, so the disassembly part in the back can only be disassembled where it is. I will explain to you the places that are not disassembled in combination with online pictures.

Remove the whole frame along the black screw of the frame again. The process of removing the screw is not difficult, but the black frame and the screen metal part are connected by concave convex snap. When removing, be careful not to stir vigorously, otherwise the LCD glass will be easily damaged.

This is what it looks like when the four surrounding frames are removed. From the perspective of the disassembly process, the frame assembly process of the 55 inch PRO Micro Whale TV is relatively perfect. The direct buckle shown in the above picture is used at the right angle to ensure the overall angle and connection gap. The joints of various gaps are processed evenly. Of course, this is just the case of this mass production prototype. According to netizens, there will still be a small number of machines with large gaps and light leaks entering the market.

This is the picture of the removed metal frame. It can be seen from the picture that the metal is aluminum profile and a small amount of stiffeners are added inside to ensure the overall strength.

This is the COP on the LCD glass exposed after the frame is removed. Because the front independent LCD driver board is used, the electronic components on the LCD glass are much less than those on other panels that integrate the driver board on the LCD panel PCB, and the maintenance difficulty of this mode is also much less.

The liquid crystal glass and the surrounding backlight modules are covered with a slightly thick black adhesive strip, which has three advantages. First, the metal frame removed previously can be prevented from hitting the liquid crystal glass for various reasons. The second can better fix the liquid crystal glass to a certain extent. Third, it can prevent light leakage to a certain extent.

Slightly tear off the black adhesive tape around, and the LCD glass with a thickness of about 2mm can be lifted.

Due to the space limitation, this disassembly can only be carried out here. Next, only the backlight module has not been disassembled. Later, we will use network pictures to explain the backlight module. Next, we will talk about the liquid crystal glass on the 55 inch PRO of Microwhale TV (which is commonly referred to as the liquid crystal screen).

From the above label, we can see that LG Display provides a LCD screen for Microwhale. The LCD glass part of this screen is made in Korea, and the two backlight modules are made in China. At the same time, this label means that the detailed parameters of this screen cannot be queried in the "LCD library" The following label is affixed by the assembly OEM factory "TPT550U2." TPT550U2. Officially, the parameters of this screen are RGB 3-color array panels with a resolution of 3840 * 2160 (4K). The effective pixels of the screen are 8.29 million, the viewing angle is 178 °, and the display color is 10bit

If it is the screen model marked by the LCD manufacturer, the detailed LCD glass and backlight parameter information shown in the above figure will be queried online. The above figure comes from the specific screen parameters of the network rather than the 55 inch PRO of Microwhale TV.

When it comes to the screen, what people are concerned about at present may be the judgment of true and false 4K. At present, the network evaluation often uses the so-called 4K test picture to judge whether a TV is true 4K, but from a professional point of view, this picture can not judge the true and false 4K. Next, we will talk about how to judge whether a TV is true 4K screen.

First, there are two kinds of fake 4K in the market:

The first is that the resolution and screen color cannot reach the 3840 × 2160 resolution and 8.2 million pixels of the true 4K. Because the false 4K mainly uses the "RGB W" technology to arrange the screen, while the true 4K uses the normal "RGB" three primary colors to arrange the primary colors. Because the useless "W" white pixels occupy certain pixels, the actual resolution of the false 4K cannot reach 3840 × 2160, and only about 6 million effective pixels are actually available. To distinguish this point, ordinary consumers have to carefully read the introduction of screen parameters given by the manufacturer, focusing on whether the screen is "RGB" or "RGB", Of course, the more accurate way is to use a magnifying glass or mobile phone to focus on the screen, take a picture, and then zoom in to view the pixel base color. If the regular white pixels shown in the above figure appear in the pixel points, it means that the TV is fake 4K.

From the point of view, the LG screen of Micro Whale TV 55 inch PRO is true 4K.

The second false 4K is whether the H.265 decoder is supported. This problem mainly occurred in the early days of 4K TV. Although the screen hardware was indeed 4K at that time, the decoding format of H.264 required more broadband to decode 4K video. In the early days of 4K TV, there was obviously no such bandwidth. Of course, this problem will not appear again with the popularity of H.265. Of course, the way to identify such fake 4K is to carefully read the decoding format given by the manufacturer. It can be seen from the micro whale network that WTV55K1 supports H.265 decoding.

From the above two points, it can be concluded that the 55 inch PRO of Microwhale TV is a genuine 4K TV.

4、 Hardware Disassembly Summary

Before dismantling the 55 inch PRO of Micro Whale TV, the author was skeptical of the Internet brand "Micro Whale" entering the LCD TV industry. Compared with other important components such as LCD glass and signal motherboard, it still has a high technological threshold, but it can be seen from this dismantling that, Almost all the important components are products produced by traditional famous manufacturers with many years of experience in the LCD TV industry. "Micro Whale", as a coordinator, only integrates the major manufacturers together to make good products, and the outstanding publicity ability of Internet enterprises enables emerging brands such as "Micro Whale" to quickly gain market share. From this, the author comes to a conclusion that WTV55K1 is bought by people who like to pursue cost performance under the premise of appropriate price.

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