Technical description and composition of the TV AKIRA LCT-19V82ST, type of panel and applicable modules. The composition of the modules.AKIRA
Model: LCT-19V82ST LCT-D19V82ST
Chassis / Version: HK-HDMI-MSTV-V5.0
Panel: M190PW01
MainBoard: HK-HDMI-MSTV-V5.0
IC MainBoard: presumably MST9E19, FT24C32A, see capacity CA1
Tuner: TNJ9355-CF (5V)
Technical Specifications LCT-19V82ST
AKIRA LCT-19V82ST
General recommendations for repairing TV LCD
Possible malfunctions
- The AKIRA LCT-19V82ST 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 its secondary output voltages, 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.
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 an excess of the maximum current or voltage. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power switch may be PWM (PWM). It is checked only by replacement with a known good one.
- 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, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the HK-HDMI-MSTV-V5.0 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard - presumably MST9E19, FT24C32A, see capacity CA1. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all, check the TNJ9355-CF (5V) tuner supply voltage and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Owners and users of the AKIRA LCT-19V82ST TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
IRC-56E for Akira (code 141) - a remote control with a full set of functions is suitable for AKIRA LCT-19V82ST, LCT-22V82ST, LCT-32V82ST
Main features of the AKIRA LCT-19V82ST device:
Installed matrix (LCD panel) M190PW01.
The required supply voltage for all nodes of the TV AKIRA LCT-19V82ST provides a switching power supply.
MainBoard - the main board (motherboard) is an HK-HDMI-MSTV-V5.0 module, with the use of microchips supposedly MST9E19, FT24C32A, see the capacity of CA1 and others.
The TNJ9355-CF (5V) tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: M190PW01 V80E
Type: a-Si TFT-LCD, Panel
Diagonal size: 19.0 inch
Resolution: 1440x900, WXGA +
Display Mode: TN, Normally White, Transmissive
Active Area: 408.24x255.15 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 3.5 / 1.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 11S4P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: AKIRA, Model: LCT-19V82ST.
Short from TV: LCD, 19 ", 1440x900, 720p HD, sound: 6 watts.
The composition uses MainBoard HK-HDMI-MSTV-V5.0 and the LCD panel (matrix) M190PW01.
TV AKIRA LCT-19V82ST with an M190PW01 LCD display, a diagonal size of 19 "(48 cm) 16:10 format. Screen brightness of 300 cd / m² is provided by backlight CCFL (EEFL) lamps. Contrast - the ratio of maximum brightness to minimum is at least 850 : 1. It is possible to view in high quality HD at a resolution of 1440x900 pixels in 720p (HD Ready) standard. 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, 576i standards , 576p, 720p, 1080i, 1080p.
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, S-Video, component, SCART, RGB, VGA, HDMI. A standard VGA (D-Sub 15) connector is used to connect a laptop or computer. This interface supports resolutions: 640x480, 800x600, 1024x768.
Overall dimensions: With stand 731x468x166 mm, Without stand 731x437x87 mm.
Attention! The AKIRA LCT-19V82ST LCD TV panel M190PW01 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!