Technical description and composition of the MYSTERY MTV-5531LTA2 TV, type of panel and applicable modules. The composition of the modules.MYSTERY LED
Model: MTV-5531LTA2
Chassis / Version: V1N12
Panel: LSC550HN01-K01
LED driver (backlight): integrated into PSU; 280mA
PWM LED driver: OB3354QP
Power Supply (PSU): TV5001-ZC02-01
PWM Power: OB2273, FAN7930, OB2263
MOSFET Power: SMK0870, MDF13N50
MainBoard: MS63082-ZC01-01
IC MainBoard: ANDROID: IP4000-ZC01-01 (A), NAND: MX30LF1G08AA, SPI Hlash: G25Q32
Tuner: NoName
Technical Specifications MTV-5531LTA2
MYSTERY MTV-5531LTA2
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The MYSTERY MTV-5531LTA2 TV does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
In such cases, the TV5001-ZC02-01 power supply is usually faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches (SMK0870, MDF13N50) and rectifier diodes for a possible partial or complete breakdown.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits (PWM) OB2273, FAN7930, OB2263 are usually checked by replacing with new, or obviously working.
- There is no image, there is sound, all other functions of the TV work. When turned on, the image may sometimes appear for a second.
The faulty usually in these cases is the backlight matrix (LED-panel). The reason can sometimes be in the power of the LEDs, but more often in their malfunction (breakdown or break), sometimes in the violation of the contact connections of the LED strips.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN junction indirectly indicates a LED-a
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the motherboard MS63082-ZC01-01 should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - ANDROID: IP4000-ZC01-01 (A), NAND: MX30LF1G08AA, SPI Hlash: G25Q32 and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the NoName tuner and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Attention! For users and owners of MTV-5531LTA2 TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
FIRMWARE FOR SPI FLASH -----------> MYSTERY MTV-5531LTA2 V1N12, Main: MS63082-ZC01-01, Panel: LSC550HN01-K01
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> TV5001-ZC02-01 Power supply
The appearance of the MainBoard MS63082-ZC01-01 is shown in the figure below:MS63082-ZC01-01
MS63082-ZC01-01 can be used in TVs:
MYSTERY MTV-4829LTA2 (Panel LSC480HN02-G), MYSTERY MTV-4031LTA2 (Panel V400HJ6-PE1).
The appearance of the power supply
Main features of the MYSTERY MTV-5531LTA2 device:
Installed matrix (LED panel) LSC550HN01-K01.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the OB3354QP PWM controller.
The necessary supply voltages for all nodes of the MYSTERY MTV-5531LTA2 TV are generated by the TV5001-ZC02-01 power supply module or its analogs using OB2273, FAN7930, OB2263 microchips and power switches of the SMK0870, MDF13N50 type.
MainBoard - the main board (motherboard) is an MS63082-ZC01-01 module, using ANDROID chips: IP4000-ZC01-01 (A), NAND: MX30LF1G08AA, SPI Hlash: G25Q32 and others.
The NoName tuner provides television reception and channel tuning.
MYSTERY MTV-5531LTA2 TV with LSC550HN01-K01 LCD display, diagonal size 55 "(140 cm) in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlight LED. Dynamic contrast ratio of 5000: 1 is achieved by special control of the LEDs The technology for making the screen of this TV model uses LED LED backlighting.The design and technical capabilities of the TV include watching programs and movies in high quality HD with a resolution of 1920x1080 pixels in a graphic layout according to the standard 1080p (Full HD).
MTV-5531LTA2 TV has built-in SMART Software and pre-installed Android Operating System. Connecting to the Internet can be done via Wi-Fi. The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, Xvid, MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI x2, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: 1241x767x260 mm.
TV Weight: 14 kg.
Attention! The LSC550HN01-K01 panel of the MYSTERY MTV-5531LTA2 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.