Technical description and composition of the TV AKIRA LCT-32MT04ST, type of panel and applicable modules. The composition of the modules.AKIRA
Model: LCT-32MT04ST
Chassis / Version: MSDV2601
Panel: V315B1-L01 Rev. C3
Inverter (backlight): I315B1-16A
PWM Inverter: OZ964GN
MOSFET Inverter: AO4614A
Power Supply (PSU): MLT666
PWM Power: MC0628R, L6562D (PFC)
MOSFET Power: 18N50, 6N60C
MainBoard: MSDV2601-ZC01-01 C
IC MainBoard: CPU: MST9E19A; Spi flash: W25X40; AT89C2051; CPU: MST9E19A; SOUND: STA540SA;
Tuner: JS-6H2 / 121
Technical Specifications LCT-32MT04ST
AKIRA LCT-32MT04ST
General recommendations for repairing TV LCD
TV AKIRA LCT-32MT04ST, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external signs of certain malfunctions.
Sometimes the AKIRA LCT-32MT04ST TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the MLT666 common power module. If it is working properly, you must check the standby batteries on the Main Board. After checking the mains fuse and power elements of the primary power supply circuit, it should also check the absence of a short circuit in the loads of the secondary rectifiers.
If the power keys of the pulse converter are not equal, you should pay attention to other elements in their bundling, which may be the result or cause of their breakdown.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked. When disabling protection in order to enable the diagnosis of a malfunction, special care should be taken, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
Repair of the motherboard MSDV2601-ZC01-01 C 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.
If a JS-6H2 / 121 tuner is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the required voltage levels and data exchange pulses with the processor via the I2C bus at the corresponding tuner pins.
Once again, remind users! Attempts to self-repair a TV AKIRA LCT-32MT04ST without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> MSDV2601-ZC01-01.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> I315B1-16A I315B1-16A Inverter Schematic
The appearance of the MainBoard MSDV2601-ZC01-01 is shown in the figure below:MSDV2601-ZC01-01
MSDV2601-ZC01-01 can be used in TVs:
AKIRA LCT-D26MT05ST (Panel V260B1-L02 Rev.C1), AKIRA LCT-32MT04ST (Panel V315B1-L01 Rev.C3), AKIRA LCT-32MT05ST (Panel V315B1-L01 Rev.C2), MYSTERY MTV-2602W (Panel V260B1-L01 Rev.C2 ).
The appearance of the power supply
Key Features of the AKIRA LCT-32MT04ST:
Installed matrix (LCD panel) V315B1-L01 Rev. C3.
To power the backlight, an inverter I315B1-16A is used, it is controlled by the PWM controller OZ964GN. As power elements of the inverter, keys of the type AO4614A are used.
The necessary supply voltages for all nodes of the TV AKIRA LCT-32MT04ST are generated by the MLT666 power module or its analogs using microchips MC0628R, L6562D (PFC) and power switches of the type 18N50, 6N60C.
MainBoard - the main board (motherboard) is an MSDV2601-ZC01-01 module, using CPU chips: MST9E19A; Spi flash: W25X40; AT89C2051; CPU: MST9E19A; SOUND: STA540SA; and others.
The JS-6H2 / 121 tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V315B1-L01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Trademark: AKIRA, Model: LCT-32MT04ST.
Shortly from the TV: LCD, 32 ", 1366x768, 720p HD, sound: 16 W.
The composition uses MainBoard MSDV2601-ZC01-01 C and LCD panel (matrix) V315B1-L01 Rev. C3.
Power Supply Unit (PSU) MLT666 Power Supply.
AKIRA LCT-32MT04ST TV with V315B1-L01 LCD, 32 "(81 cm) diagonal size in 16: 9 format. 650 cd / m² screen brightness is provided by CCFL (EEFL) lamps. Contrast - the ratio of maximum brightness to minimum is not less than 1200: 1. It is possible to view in high quality HD at a resolution of 1366x768 pixels in 720p standard (HD Ready). The input high-frequency or video signal is decoded in PAL, SECAM, NTSC analog systems. Digital signal generation (graphic format) is performed in 480i, 480p standards , 576i, 576p, 720p, 1080i.
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, audio x3, S-Video, component, RGB, VGA. A headphone jack is provided. A standard VGA (D-Sub 15) connector is used to connect a laptop or computer. This interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
Overall dimensions: With stand 731x468x166 mm, Without stand 731x437x87 mm.
Attention! The V315B1-L01 Rev. C3 panel of the AKIRA LCT-32MT04ST 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!
