How to flexibly use the GPIO of Freescale's i.MX application processor

[Introduction] S50 Air full version is a 50-inch, polarized 3D, 1080p resolution TV, priced at 3,500 yuan, including 2 years LeTV membership fee of 980 yuan. With curiosity, the 52 program network, please disassemble the big gods guest (letshome) to disassemble this music TV for everyone.

    The S50 Air full version is a 50-inch, polarized 3D, 1080p resolution TV set, priced at 3,500 yuan, including 2 years LeTV membership fee of 980 yuan. With curiosity, the 52 program network, please disassemble the big gods guest (letshome) to disassemble this music TV for everyone.

Before you leave, take a look at the renderings of LeTV's official website:

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


Open the back cover:

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

The board is much more than expected and the integration is not high.

02——The position of the LCD circuit board;
03——LG LCD chip;
04——LCD driver chip;
05 and 06 - power circuit board;
07——Main board;
08 - Wi-Fi chip.

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

Disassembly process

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

Uh... finally finished, 6 boards, leaving only empty panels.

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

Change the angle:

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram


Parts are put out to see:

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

Change the angle:

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram


Then enter the "recognition parts" link:

[Screen articles]

LCD panel


LeTV TVS50 Air disassembly diagram


Manufacturer TPV, model TPT500J1 – DUJSGK.

TPV is a TPV brand and belongs to the TPV and LG joint ventures. LeTV official website "parameters" page only mentions LG. This panel supports polarized 3D, the same model (same price) and a shutter-type 3D with InnoLux panel. The latter cost is higher than the former, but it only appears in publicity, and consumers can't actually buy it.

LCD circuit board

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

Manufacturer LG, model LC500DUJ (SG) (K2).

Liquid crystal display chip

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

Manufacturer LG, model TL2376EP.

LCD driver

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

Manufacturer NOVATEK, model NT72322MBG.

NOVATEK is Taiwan Linkage Technology.

[main board articles]

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

CPU chip

Mstar 6A918, Cortex A9 quad core 1.5GHz.

The CPU is hidden under the cover, which is the official website parameter information.

RAM

The manufacturer is unknown, 2GB DDR3.

The memory chip is hidden under the cover, which is the official website parameter information.

Flash flash

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram

Manufacturer Toshiba, model THGBMBG6D1KBAIL, with a capacity of 8GB.

Toshiba eMMC 5.0 Series

[Power Supply]

Two boards. A friend told the house guest, "The use of slender high-voltage capacitors in large quantities, the life of such capacitors will not be too long." Friends who are familiar with circuit design can talk about their own opinions.

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


Circuit board 1

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


Circuit board 2

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


【other】

WiFi chip

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


Manufacturer Atheros Qualcomm Atheros, model AR1021X-CL3D.

Located in the center of the top of the TV, it is speculated that it may be due to the WiFi signal, and there is also a USB interface on the top for peripherals such as cameras.

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


speaker

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


Manufacturer Zenmay Central Sound (Tianjin), model 378G0110474ZRB, parameter 16 ohm 11W.

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


control button

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram

11 keys, including power button

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


[Discovery]

1. Plastic frame or "split screen" culprit

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air dismantling diagram is not only the plastic outer frame, but also the plastic inner frame: the upper part is the backlit panel, the LCD glass screen is lying on it, and they are combined with a thin plastic frame. Yes, even without adhesives, the house owner has broken the border and found that the two are actually separated.

If your eyes are good enough, you can see the Xiaomi TV behind LeTV, without having to avoid it.

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


This is a contrast picture of the plastic border of the Xiaomi TV (left) and the LeTV (right). The professional told us, "There is only a thin outer casing, it is easy to crack due to uneven force. Even without adhesive, LeTV's design is quite outrageous. It seems that the design only takes two or three years. Life." For reference: LeTV TV purchase fee has 2 years service fee, 980 yuan.

LeTV TVS50 Air disassembly diagram

LeTV TVS50 Air disassembly diagram


Feel the strength of the plastic frame.

2. The difference between LeTV S50 Air and X50 Air

LeTV TVS50 Air disassembly diagram
LeTV TVS50 Air disassembly diagram


If you look closely at the photo of the motherboard section, you will find the word "X50_Air_MB_H4200" on the motherboard.

In fact, comparing the configuration specifications of the two is not difficult to find, the full version of the X50 Air and the full version of the S50 Air use the same set of hardware solutions, including size, appearance, CPU, etc., the difference is in 4K resolution, The shutter 3D LCD panel, 16GB storage space, the price is only 500 yuan. So, if you have to choose between the two, the X50 Air is obviously more appropriate. However, considering the first plastic frame, it should be more careful than other TVs when handling, including second handling at home.

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