1 detailed explanation of the motherboard
The degree of difficulty of dismantling the micro-whale WTV55K1 is very low. Remove the dozens of screws on the back and uncover the back cover. Remember that the LCD panel is a very delicate thing. In the dismantling process, be sure to place a plastic sponge cushion on the bottom of the TV, or move the TV directly to your bed. Of course, we do not recommend non-professional users to do television dismantling. And the back of the fuselage is also affixed with a label to prevent unauthorized dismantling, broken after the warranty can not be Oh!
After the cover is uncovered, the internal structure can be seen at a glance. The whale WTV55K1 contains six main parts: the signal processing board, power board, power switch, WIFI Bluetooth module, key control board, and speaker. The internal structure of televisions and cables are neat, and the method of cabling is also lined up to avoid cross knotting. Speakers are distributed on both sides and fit into the backboard. From the perspective of the volume of the sound unit, the sound quality is worth looking forward to.
The main board is fixed by four screws, the board surface is clean, the module and the chip are clear, and the terminals are side-out, and all of them are combined with the main board by the plug-in method. Solid capacitors are found in all corners of the motherboard. The huge gutter-type heat sinks also ensure that the active heat sink structure has high heat dissipation performance. The processing chip and the heat sink are soldered on the motherboard, and the small editor has temporarily passed it. Judging from the official published parameters, the Micro Whale WTV55K1 uses the MStar Cortex A53 architecture 4-core processor and the ARM Mali-450MP4 GPU.
Let's look at the memory section first. The micro whale WTV55K1 has two HYNIX (Hynix) DDR3 internal memory, the memory model is H5TQ4G63CFR, dual channel 2GB capacity, frequency 1866MHz, brings faster speed for big data frequent exchange processing.
With more and more applications that can be installed on smart TVs, plus games, K songs, and so on on TVs, the flash memory of TVs will become increasingly tight. The micro whale WTV55K1 has built-in 8G flash memory of a common standard, which is much better than a large number of 4G TVs. From the flash memory diagram can be seen that it is equipped with Samsung's 8GB eMMC 5.0 flash memory chip, the specific model is KLM8G1GEND-B031. This flash memory uses a 19mm process and has excellent read and write speeds.
The color of the interface part is to see if it is filled with full force? True, the Whale WTV55K1 uses a fully gold-plated connector. Compared with the copper interface, it has a stronger and more stable signal transmission capability. At the same time, the gold-plated interface can effectively reduce oxidation and improve the service life of the interface. The resistance of gold is lower than that of copper, which further improves the conductivity. At the same time, the interface of the Whale WTV55K1 is also very luxurious, with 3 HDMI2.0 (relative to HDMI1.4, HDMI2.0 interface, faster transmission, up to 18Gbps), 1 USB2.0 and 2 USB3.0, one Optical fiber output can be said to have won the hearts of HD and HIFI users.
2. Power board LCD driver board
The power board uses a black PCB board, covering a very large area, with sufficient materials. The TV standby circuit uses a flyback standby circuit. The three transformers are embedded in different positions of the power board, providing a stable energy source for the TV. The power board does not use a patch cord but directly uses the socket hard switch. The power information can also be seen on the nameplate of the TV.
The original green sheet-like object in the picture is called a thermistor, which can suppress a huge current at the moment of power-on to protect the circuit. The black battery-like cylindrical object is called an electrolytic capacitor, and the capacitance can be very large and the circuit can be stabilized.
The liquid crystal driver board module is often referred to as a "driver board." The function is to process and control the signal sent from the core processor and then send it to the liquid crystal panel to display the image. The more important integrated circuits on the driver board are the master chip and the microcontroller. The input interface of the driver board is connected to the main control chip of the TV motherboard through a connection line, and the output interface is connected to the liquid crystal panel through one or two signal transmission cables. The driver board of the Micro Whale WTV55K1 wraps the entire circuit board with a metal cover, and is fixed with two screws. The protection measures are in place and the anti-interference ability is strong.
The whale WTV55K1's driver board uses the LG original master chip. The driver IC is clearly marked with the word “LG Display.†The chip model is TLi2380EP. Judging from the data we have learned, this is a series of chips used in most domestic color TV sets.
3. Other structures
Micro Whale WTV55K1 uses a separate WiFi module. WIFI is designed for 2X2 dual-income dual-antenna and supports 2.4GHz and 5GHz dual-band WiFi signal reception, supporting 802.11ac protocol. The theoretical networking send and receive speed reaches Gigabit. Bluetooth is also integrated in this module, supports Bluetooth 4.0, and is backward compatible with other Bluetooth+ wireless network module combinations and operates with other radio frequencies. Wireless connectivity is very strong.
Today's TVs are getting thinner and thinner, and the sound of TVs is limited by the physical space. Under ultra-thin form, it is difficult to do sound quality better, especially for the heavy bass that requires a lot of space. The small whale WTV55K1 leaves plenty of space for the stereo module at the bottom of the TV, providing a constant source of power for the music band. The Microwhale TV is equipped with two uniquely designed dual passive units, rated at 2 x 10W, and incorporates silk membrane tweeters. It can be clearly seen from the back of the TV motherboard. It supports sound effects such as Dolby Digital and Dolby Digital Plus.
The tiny whale WTV55K1 is equipped with a LG IPS RGB True 4K hard screen panel. Physical resolution 3840×2160, viewing angle 178°. The standard state brightness can reach 330 nits, dynamic contrast 10000:1, dynamic response 8ms, color number 10bit. The parameters of the panel are affixed to the back of the LCD screen. From the actual dynamic and static image display results, it is highly consistent with the official claim.
The Whale WTV55K1 uses five-dimensional keying, similar to the early rocker buttons. At present, mainstream TVs are equipped with such five-dimensional keying, and it is easier to operate blindly than independent keys.
The layout and line interface of the micro-whale TV are very neat, and the buckle is also very firm. There is no situation where the buckle is broken due to improper force during the dismantling process. All of the cable connectors are embedded, and they are more solid. The key parts like the LCD driver board also have a metal cover.
4. Dismantling summary
The whole process of dismantling the micro-whale WTV55K1 was very smooth. Of course, it was inseparable from the reasonable structure and layout of the television. From the demolished map, we can see that the various components and core components used by the Micro Whale WTV55K1 come from mainstream accessory manufacturers and chip manufacturers, and we have reason to believe that it is serious for the product.
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