Technical description and composition of the MYSTERY MTV-3225LW TV, type of panel and applicable modules. The composition of the modules.MYSTERY LED
Model: MTV-3225LW
Chassis / Version: V1L09
Panel: LVM320CSTME13V4
T-CON: ST3151A04; KLSTW101, G5562A = MAX17126A, 1575
LED driver (backlight): 40-F3310F-IRB2XG
Power Supply (PSU): PE061C2 - PW200AA
PWM Power: FAN6754 (PWM), VIPer17L (Standby)
MOSFET Power: SK2996
MainBoard: 40-MS82S0-MAD2XG MS82S L32D3329 1224
IC MainBoard: MST6E182VS-LF, 25Q32A-100HIP, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2
Tuner: F35WT-3-E 07-380FI5-NK4G
Technical Specifications MTV-3225LW
MYSTERY MTV-3225LW
General repair guidelines for TV LCD LED
If the power supply module PE061C2 - PW200AA malfunctions, the external manifestations may be different, for example, the MYSTERY MTV-3225LW does not turn on at all and there is no indication of the indicator lights on the front panel. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - SK2996 diodes and transistors for the possibility of avalanche or thermal breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip FAN6754 (PWM), VIPer17L (Standby) from the manufacturer.
If there is no image when you turn on the MYSTERY MTV-3225LW, or it appears and immediately disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the LVM320CSTME13V4 panel, or in the LED node of the driver-converter of their power supply.
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.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
Repair of the motherboard 40-MS82S0-MAD2XG MS82S L32D3329 1224 must begin with the diagnosis and verification of all linear stabilizers and power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
When repairing an MB board, you need to check its components MST6E182VS-LF, 25Q32A-100HIP, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2. Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating.
If there is no reception of television channels, but the TV works properly from external devices, first of all you need to check the voltage of the tuner F35WT-3-E 07-380FI5-NK4G and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Attention to users! Self-repair of the MYSTERY MTV-3225LW TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM / SERVICE MANUAL psu ------------------> PE061C2
The appearance of the MainBoard 40-MS82S0-MAD2XG is shown in the figure below:
40-MS82S0-MAD2XG
40-MS82S0-MAD2XG can be used in TVs:
ERISSON 23LET70 (Panel LTA230AP01), GOLDSTAR 32A340R (Panel LVW320SSTM E1), GoldStar LT-42A320F (Panel LVF420AUBK), MYSTERY MTV-3225LW (Panel LVM320CSTME13V4), MYSTERY MTV-4019LW (Panel LVF390CMTM E13 V5), MYSTERY MTV-3219LW (Panel LVW320CSTME18 V2), TCL 40D3200 (Panel LTA400HM13 ), TCL 39D3320 39D3320F (Panel LVF390CMTM E13 V2), TCL 39E5000F3D (Panel V390HK1-LS5), THOMSON T39ED33HU (Panel LVF390CMTME15V2), THOMSON T32ED33U (Panel LSC320AN01-C06), THOMSON T32E32U (Panel LVW320SSTT E1).
The appearance of the power supply
Main features of the MYSTERY MTV-3225LW device:
Installed matrix (LED-panel) LVM320CSTME13V4.
The matrix control uses the Timing Controller (T-CON) ST3151A04 ;.
The LED driver 40-F3310F-IRB2XG is used to power the backlight LEDs.
The required supply voltages for all nodes of the MYSTERY MTV-3225LW TV are generated by the PE061C2 power module or its analogs using FAN6754 (PWM), VIPer17L (Standby) microcircuits and SK2996 type power switches.
MainBoard - the main board (motherboard) is a 40-MS82S0-MAD2XG module, using microcircuits MST6E182VS-LF, 25Q32A-100HIP, 24C64, K4T51163QT-BCF7, IT6633E-P, TPA3110D2 and others.
The tuner F35WT-3-E 07-380FI5-NK4G provides the reception of television programs and tuning to channels.
TV MYSTERY MTV-3225LW with LCD display LVM320CSTME13V4, diagonal size 32 "(81 cm) 16: 9 format. The required brightness of the screen 400 cd / m² is provided by LED backlight LED. Contrast, as the ratio of maximum brightness to minimum, is 4000: 1. Edge LED backlighting is implemented 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 for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i. Supported media file formats: MP3, WMA, MPEG4, Xvid, JPEG.
The power of the sound system 16 W (2x8 W) provide 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, component, VGA, HDMI x3, 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, 1360x768.
The power consumed by the TV in the operating mode from the network is 70 watts.
Dimensions: With stand 642x444x209 mm, Without stand 570x345x70 mm.
Attention! The LVM320CSTME13V4 panel of the MYSTERY MTV-3225LW 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.