Technical description and composition of the MYSTERY MTV-4022LW TV, type of panel and applicable modules. The composition of the modules.MYSTERY LED
Model: MTV-4022LW
Chassis / Version: MSDV3209-ZC01-01
Panel: M390HJ1-P01
LED backlight: LED39D13-ZC14-02 (B) 30339013206
T-CON: T390HVN01.0 CTRL BD 39T01-C03
LED driver (backlight): TV3901-ZC02-01 (C) 303C3901063
Power Supply (PSU): TV3205-ZC02-01 (A) 303C3205061
PWM Power: OB2263, ICE3B0565J
MainBoard: MSDV3209-ZC01-01 (D)
IC MainBoard: CPU: MSD308PX-LF-Z1 APGV911ZD, SPI Flash: MX25L6406EMI-12G, DDR: W9751G6IB
Tuner: DT58WT-3RB-E
Control: IR: 303C3262231 TV3262-ZC25-01 (A)
Technical Specifications MTV-4022LW
MYSTERY MTV-4022LW
General repair guidelines for TV LCD LED
MYSTERY MTV-4022LW, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the soldered terminals of transformers or heating elements are detected, it is advisable to establish the causes and consequences of the malfunction that has arisen, as well as to check the connected elements and assemblies.
If the MTV-4022LW TV does not turn on, does not make any sounds when turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the stabilizer or power converter of the control processor may be faulty, which is typical for some MYSTERY models. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as a large electrolytic capacitor of the filter of the rectifier network.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
In cases where the MYSTERY MTV-4022LW TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the M390HJ1-P01 panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
On the motherboard MSDV3209-ZC01-01 (D), in the event of a malfunction, you should first check the performance of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: MSD308PX-LF-Z1 APGV911ZD, SPI Flash: MX25L6406EMI-12G, DDR: W9751G6IB requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
If you suspect a malfunction of the DT58WT-3RB-E tuner, first of all, make sure that there is a supply voltage on the corresponding output of the tuner.
Remember! Attempts to self-repair by users of the MYSTERY MTV-4022LW TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Main MSDV3209-ZC01-01 Schematic diagram
The appearance of the MainBoard MSDV3209-ZC01-01 is shown in the figure below:MainBoard MSDV3209-ZC01-01 uses a multifunctional microprocessor of the type MSD309PX or MSD308PX with an integrated scaler. Two RAM chips W9751G6IB are used as RAM. SPI Flash MX25L6406EMI-12G is made in the SOP-16 (16 pin) package.
It is advisable to start the repair of the motherboard by checking the voltage + 5V standby mode. In the operating mode, it is necessary to check the operability of linear stabilizers and power converters of the processor, memory, panel and other components of the board.
MSDV3209-ZC01-01 can be used in TVs:
BBK LEM3281FDT (Panel V315B1-LE9 REV.C1), BBK LEM3285FDTG (Panel V315H4-LE7 REV.C1), BBK LEM1949DT (Panel HT185WX3-100), BBK LEM3248DT (Panel V315B1-LE7 REV.C1), BBK LEM2665FDTG (Panel V260H1-LE8), BBK LEM3249FDT (Panel V315H4-LE8), BBK LEM2449FDT (Panel M236MWF7), BBK LEM3282DT (Panel V315B1-LEA), MYSTERY MTV-4018LW (Panel T390HVN01.0), MYSTERY MTV-4022LW (Panel M390HJ1-P01), MYSTERY MTV-4214LW (Panel T420HW08 V.5 FHD), MYSTERY MTV-3214LW (Panel V315H4-LE2 Rev.C1), MYSTERY MTV-4217LW (Panel T420HW09 V.9 (FHD)), MYSTERY MTV-3220LW (Panel V315H4-LE7).
The appearance of the power supply
Main features of the MYSTERY MTV-4022LW device:
Installed matrix (LED-panel) M390HJ1-P01.
The matrix control uses the Timing Controller (T-CON) T390HVN01.0.
To power the backlight LEDs, the TV3901-ZC02-01 LED driver is used.
The required supply voltages for all nodes of the MYSTERY MTV-4022LW TV are generated by the TV3205-ZC02-01 power supply module or its analogs using OB2263, ICE3B0565J microcircuits.
MainBoard - the main board (motherboard) is an MSDV3209-ZC01-01 module, using CPU chips: MSD308PX-LF-Z1 APGV911ZD, SPI Flash: MX25L6406EMI-12G, DDR: W9751G6IB and others.
Tuner DT58WT-3RB-E provides the reception of television programs and tuning to channels.
The MYSTERY MTV-4022LW TV with an M390HJ1-P01 LCD, 39 "(99 cm) diagonal size is 16: 9. The required brightness of the screen is 400 cd / m² by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 2000: 1. The LED panel of this TV has an end-face LED illumination - Edge LED. The TV’s design and technical features include viewing broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). 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, DivX , MKV, JPEG.
The power of the sound speaker system 16 W (2x8 W) is provided by two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, RGB, VGA, HDMI x2, USB. 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.
Dimensions: With stand 642x444x209 mm, Without stand 570x345x70 mm.
Attention! The M390HJ1-P01 panel of the MYSTERY MTV-4022LW 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.