Technical description and composition of the MYSTERY MTV-3214LW TV, type of panel and applicable modules. The composition of the modules.MYSTERY LED
Model: MTV-3214LW
Chassis / Version: MSDV3209-ZC01-01
Panel: V315H4-LE2 Rev. C1
LED backlight: V315H4-LE2-TREF3, V315H4-LE2-TLEF3
LED driver (backlight): T87D106.00
MainBoard: MSDV3209-ZC01-01 (C)
IC MainBoard: Cpu: MSD309PX-LF-Z, Spi Flash: MX25L6406EMI-12G, DDR: H5PS5162FFR - 2 pcs, Audio: TPA3113D2
Tuner: DT58WT-3RB-E
Technical Specifications MTV-3214LW
MYSTERY MTV-3214LW
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should examine all the internal components of the MYSTERY MTV-3214LW TV, as well as the external elements of the housing. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
In the absence of any signs of operability, when the MYSTERY MTV-3214LW does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. When diagnosing and repairing the power supply, first of all, replace the swollen filter capacitors of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the MYSTERY MTV-3214LW does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the V315H4-LE2 Rev.C1 panel, or their power converter - LED driver. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main PSU.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Repair or diagnostics of the motherboard MSDV3209-ZC01-01 (C) should begin by checking the stabilizers or power converters of its chips. If necessary, you should update the software (software).
In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its Cpu chips: MSD309PX-LF-Z, Spi Flash: MX25L6406EMI-12G, DDR: H5PS5162FFR - 2 pcs, Audio: TPA3113D2 and others possible defective components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all, check the voltage of the tuner DT58WT-3RB-E.
Attention to users! Self-repair of the MYSTERY MTV-3214LW TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Main MSDV3209-ZC01-01 Schematic diagram
FIRMWARE FOR SPI FLASH -----------> MYSTERY MTV-3214LW, Main: MSDV3209-ZC01-01 (C), Panel: V315H4-LE2 Rev.C1
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).
Main features of the MYSTERY MTV-3214LW device:
Installed matrix (LED-panel) V315H4-LE2 Rev. C1.
The LED driver T87D106.00 is used to power the backlight LEDs.
The required supply voltage for all nodes of the TV MYSTERY MTV-3214LW provides a switching power supply.
MainBoard - the main board (motherboard) is an MSDV3209-ZC01-01 module, using Cpu microcircuits: MSD309PX-LF-Z, Spi Flash: MX25L6406EMI-12G, DDR: H5PS5162FFR - 2 pcs, Audio: TPA3113D2 and others.
Tuner DT58WT-3RB-E provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V315H4-LE2
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920 (2) x1080 (2), FHD
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 697.92x392.58 mm
Surface: Antiglare (Haze 14%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8.5 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
MYSTERY MTV-3214LW TV with V315H4-LE2 LCD display, 32 "(81 cm) diagonal size in 16: 9 format. The required screen brightness of 400 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 2000: 1. The LED panel of this TV has end-face LED illumination - Edge LED. The design and technical capabilities of the TV include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution of 1080p (Full HD) standard. 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, MPEG4, DivX, 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, VGA, HDMI x2, USB. 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: 800x600, 1024x768.
The power consumed by the TV in the operating mode from the network is 90 watts.
Dimensions: With stand 642x444x209 mm, Without stand 570x345x70 mm.
Attention! The V315H4-LE2 Rev. C1 panel of the MYSTERY MTV-3214LW 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.
