Technical description and composition of the TV AKIRA LCT-17MS01ST, type of panel and applicable modules. The composition of the modules.AKIRA
Model: LCT-17MS01ST
Chassis / Version: MT2023B
Panel: 17 inch
MainBoard: MT2023B_V1.2A
IC MainBoard: TW9906, RTD2023B, RSM2314, TDA1517P, CX1117-25, MTV512CMV, 24C16
Technical Specifications LCT-17MS01ST
AKIRA LCT-17MS01ST
General recommendations for repairing TV LCD
Possible malfunctions
- The AKIRA LCT-17MS01ST TV does not turn on at all. There is no reaction to the remote control or to the control buttons from the front panel. Indicator lights do not light or flash.
Most often, with such manifestations, the main power module turns out to be faulty. It is necessary to measure the secondary output voltage, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
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 to 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 they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the motherboard MT2023B_V1.2A should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - TW9906, RTD2023B, RSM2314, TDA1517P, CX1117-25, MTV512CMV, 24C16 and replace failed chips with new ones. Some malfunctions can be associated with the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
Key Features of the AKIRA LCT-17MS01ST:
Installed matrix (LCD-panel) 17 inches.
The necessary supply voltage for all nodes of the TV AKIRA LCT-17MS01ST provides a switching power supply.
MainBoard - the main board (motherboard) is a module MT2023B_V1.2A, using chips TW9906, RTD2023B, RSM2314, TDA1517P, CX1117-25, MTV512CMV, 24C16 and others.
Information from an alternative source:
Akira LCT-17MSO1ST chassis MT2023B
Motherboard: MT2023B_V1.2A, TW9906, RTD2023B, RSM2314, TDA1517P, CX1117-25, MTV512CMV, 24C16.
Brand: AKIRA, Model: LCT-17MS01ST.
Briefly from the TV: LCD, 17 ", 1280x1024, sound: 6 watts.
The composition uses MainBoard MT2023B_V1.2A and a 17-inch LCD panel (matrix).
TV AKIRA LCT-17MS01ST with LCD 17, diagonal size 17 "format 5: 4. The brightness of the screen 300 cd / m² is provided by backlight CCFL (EEFL) lamps. Contrast - the ratio of maximum brightness to minimum is at least 500: 1. Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Digital signal generation (graphic format) is performed in standards 480i, 480p, 576i, 576p.
The power of the acoustic system of sound 6 W (2x3 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, RGB. A standard VGA (D-Sub 15) connector is used to connect a laptop or computer. This interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024.
Overall dimensions: With stand 731x468x166 mm, Without stand 731x437x87 mm.
Attention! The 17-inch panel of the AKIRA LCT-17MS01ST 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!