Thursday, 30 April 2020

REPAIR / SERVICING TV MYSTERY MTV-3213LW

Technical description and composition of the MYSTERY MTV-3213LW TV, panel type and applicable modules. The composition of the modules.
MYSTERY LED
Model: MTV-3213LW
Chassis / Version: MSTV3208-ZC01-01
Panel: T315XW04 V.8 // V315EL1T03-1
LED driver (backlight): V3232-ZC02-01 (A) 303C3232061
PWM LED driver: AP3608EM-G1
MOSFET LED driver: B6010D
Power Supply (PSU): TV3205-ZC02-01 (A) P / N: 303C3205061 // TV3207-ZC02-01 (C) P / N: 303C3207063
PWM Power: OB2263, ICE3B0565J
MOSFET Power: FDPF7N65
MainBoard: MSTV3208-ZC01-01 // V3232-ZC02-01 (A) 303C3232061
IC MainBoard: MST6M48RHS-LF-Z1, M14D5121632A-2.5B, 25L3206E, TPA3113D2, AMS1117
Tuner: F21WT-3BARE
Technical Specifications MTV-3213LW
MYSTERY MTV-3213LW
General repair guidelines for TV LCD LED
MYSTERY MTV-3213LW, like other electronic devices, is recommended to start troubleshooting and repair with an external inspection of the external and internal elements. Using visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before the necessary measurements are taken. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
In the case when the MTV-3213LW does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, the TV3205-ZC02-01A P / N: 303C3205061 power supply module is probably defective in this case. If it is serviceable for such manifestations, it is necessary to check the stabilizer (converter) of the processor power supply on the motherboard.In diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the secondary rectifier filter 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.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
Sometimes the MYSTERY MTV-3213LW TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the converter for the panel backlight LEDs, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including in the power supply unit (power supply unit).
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - MST6M48RHS-LF-Z1, M14D5121632A-2.5B, 25L3206E, TPA3113D2, AMS1117. Defective components should be replaced.
Before replacing the F21WT-3BARE tuner, if there is no tuning to the channels, you must first check the supply voltage at its terminals, including the power supply of varicaps (30-33V).
Once again, remind users! Attempts to self-repair a TV MYSTERY MTV-3213LW without the appropriate qualifications and experience can lead to its complete non-repairability!

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    MSTV3208-ZC01-01

FIRMWARE FOR SPI FLASH  ----------->   MYSTERY MTV-3213LW, Main MSTV3208-ZC01-01, Panel T315XW04 V.8 


 SCHEMATIC DIAGRAM  / SERVICE MANUAL   Power supply ------------------>    TV3205-ZC02-01

SCHEMATIC DIAGRAM  / SERVICE MANUAL   Power supply ------------------>    TV3207-ZC02-01


 The appearance of the MainBoard MSTV3208-ZC01-01 is shown in the figure below:
The motherboard MSTV3208-ZC01-01 is made using the multifunction microprocessor MST6M48RHS-LF, which includes a scaler (graphic controller-scaler). To organize the work of the processor, the external RAM H5PS5162GFR 512Mb DDR2 SDRAM in BGA version and SPI FLASH 25Q32 (4Mb) are used. To provide power to the processor core, a DC / DC converter with an output voltage of 1.2V is used, assembled on the basis of the MP1482 PWM controller. Other nodes of the processor are powered by linear voltage stabilizers 2.5V, 3.3V. 1.8V voltage is used to power the DDR RAM, 3.3V is needed for the SPI FLASH ROM.
It is advisable to start the MainBoard repair by checking the supply voltage in Stand-by mode 5V and 3.3V. In operating mode, check the operation of all linear stabilizers and the DC / DC converter. If there is a backlight and there is no image, you need to check the power of the 5V or 12V panel (depending on the type of LCD panel), which should be present directly on the LVDS connector.
If the indicator signals Stand-by mode and does not respond to the remote control and control buttons, it is recommended to update the SPI Flash software. Taking into account the glitchiness of Winbond SPI chips, it is advisable to replace them with new ones in case of software failures.
MSTV3208-ZC01-01 can be used in TVs:
BBK LEM2648SD (Panel V260B1-LE9 revC1), BBK LEM3248SD (Panel HV320WX2-130 (B3)), BBK LMP3229HDU Ver1 (Panel T315HW02 v.7), BBK LMP3229HDU Ver2 (Panel T315HW04 V7), BBK LEM2649HD (Panel V260H1-LE7 Rev C1), MYSTERY MTV-2607W (Panel V260H1-L05), MYSTERY MTV-3206 (Panel T315XW04 V.7), MYSTERY MTV-3207W (Panel V315B3-L04 rev.c1), MYSTERY MTV-3213LW (Panel T315XW04 V.8), MYSTERY MTV-2220LW (Panel CLAA215FA15), MYSTERY MTV-3207W (Panel HV320WX2-110), MYSTERY MTV-2614LW (Panel V260H1-LE6), MYSTERY MTV-3208WH (Panel V315H1-L02), MYSTERY MTV-2411LW (Panel V236H1-LE5 Rev.C1), MYSTERY MTV-2618LW (Panel V260B2-LE11), MYSTERY MTV-2211LW (Panel CLAA215FA10), MYSTERY MTV-2414LW (Panel V236H1-L01), MYSTERY MTV-2611LW (Panel V260H1-LE6 Rev.C1), MYSTERY MTV-3206W (Panel T315XW03 V.3), MYSTERY MTV-3211LW (Panel V315H3-LE2 Rev. C1), MYSTERY MTV-4207WH (Panel T420HW09 V.1), MYSTERY MTV-1921LD (Panel HT185WX3).
The appearance of the power supply
Main features of the MYSTERY MTV-3213LW device:
Installed matrix (LED panel) T315XW04 V.8 or V315EL1T03-1.
The LED driver V3232-ZC02-01 (A) is used to power the backlight LEDs, it is controlled by the AP3608EM-G1 PWM controller. As power elements of the LED driver, keys of the type B6010D are used.
The required supply voltages for all nodes of the MYSTERY MTV-3213LW TV are generated by the TV3205-ZC02-01 (A) power supply module or its analogs using OB2263, ICE3B0565J microcircuits and FDPF7N65 type power switches.
MainBoard - the main board (motherboard) is a module MSTV3208-ZC01-01, using microchips MST6M48RHS-LF-Z1, M14D5121632A-2.5B, 25L3206E, TPA3113D2, AMS1117 and others.
The F21WT-3BARE tuner provides television reception and channel tuning.
Information from an alternative source:
MYSTERY MTV-3213LW (V3K10)
Panel Type (Matrix): T315XW04 V.8
Motherboard: MSTV3208-ZC01-01, TPA3113D2, Tuner: F21WT-3BAR-E
T-con: T315XW04 V3,
Invertor: TV3232-ZC02-01 (A), AP3608EM-G1 x2
PSU: TV3207-ZC02-01 (B) P / N: 303C3207062, ICE380565J
Additional technical information about the panel:
Brand: AUO
Model: T315XW04 V8
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit)
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: CCFL
Signal Interface: LVDS (1 ch, 8-bit)

 The MYSTERY MTV-3213LW TV with a T315XW04 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. Edge LED backlighting is realized in the LED-panel of this TV - Edge LED. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in an analog system . Ah PAL, SECAM, NTSC Image processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats:. MP3, 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: 640x480, 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 T315XW04 V.8 panel of the MYSTERY MTV-3213LW 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.