Technical description and composition of the MYSTERY MTV-2616WD TV, type of panel and applicable modules. The composition of the modules.MYSTERY
Model: MTV-2616WD
Chassis / Version: V1J05
Panel: V260B1-L17 Rev. C1
T-CON: V260B1 XC31
Inverter (backlight): integrated into PSU
PWM Inverter: SG3525AN
Power Supply (PSU): MIP260B-1
PWM Power: L656JD, F9222
MOSFET Power: 13N50C, 5N50CR
MainBoard: MSTV2605-ZC01-01 (B)
IC MainBoard: CPU: MST6M16JS-LF, SPI Flash: 25L1605, EEPROM: 24C64WP
Tuner: F21WT-3BAR-E
Technical Specifications MTV-2616WD
MYSTERY MTV-2616WD
General recommendations for repairing TV LCD
Possible malfunctions
- MYSTERY MTV-2616WD does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
With similar manifestations, in some cases, the MIP260B power module is faulty. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, check the serviceability of power switches (13N50C, 5N50CR) and rectifier diodes for possible breakdown (short circuit).
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke the excess of maximum current or voltage values. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) L656JD, F9222, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after their completion, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the MSTV2605-ZC01-01 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace 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: MST6M16JS-LF, SPI Flash: 25L1605, EEPROM: 24C64WP requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
If there is no reception of television channels, but the TV works properly from external devices, first of all it is necessary to check the voltage of the tuner F21WT-3BAR-E and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Attention TV owners! Attempts at self-repair of the MYSTERY MTV-2616WD are not recommended by the manufacturer and can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> EEPROM MYSTERY MTV-2616WD V1J05, Main: MSTV2605-ZC01-01 (B), Panel: V260B1-L17 Rev. C1
The appearance of the MainBoard MSTV2605-ZC01-01 is shown in the figure below:MSTV2605-ZC01-01
The appearance of the power supply
Main features of the MYSTERY MTV-2616WD device:
Installed matrix (LCD panel) V260B1-L17 Rev. C1.
The matrix control uses the Timing Controller (T-CON) V260B1.
To power the backlight, a converter is used, combined with the power supply, controlled by the SG3525AN PWM controller.
The required supply voltages for all nodes of the MYSTERY MTV-2616WD TV are generated by the MIP260B-1 power supply module or its analogs using L656JD, F9222 microcircuits and 13N50C, 5N50CR power switches.
MainBoard - the main board (motherboard) is an MSTV2605-ZC01-01 module, using CPU chips: MST6M16JS-LF, SPI Flash: 25L1605, EEPROM: 24C64WP and others.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
MYSTERY MTV-2616WD TV with V260B1-DL11 LCD, 26 "(66 cm) diagonal, 16: 9 format. 400 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Contrast as the ratio of maximum brightness to the minimum is 800: 1. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation going on in st andarths 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, MPEG4, VideoCD, SVCD, Picture CD, 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 x2, audio x4, S-Video x2, component, SCART x2, 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, 1280x1024, 1360x768.
The power consumed by the TV in the operating mode from the network is 130 watts.
Dimensions: With stand 642x444x209 mm, Without stand 570x345x70 mm.
Attention! The V260B1-DL11 REV.A0 panel of the MYSTERY MTV-2616WD LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!