Technical description and composition of the TV SUPRA STV-LC24T410WL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC24T410WL
Chassis / Version: CV9202L-T
Panel: HK236WLEDM-CH24H
MainBoard: CV9202L-T
IC MainBoard: Cpu: Sunplus SPV9202BD, DDRAM: W6310GKB-12, Spi Flash: 25Q64
Tuner: ST03WS-2A-E
Technical Specifications STV-LC24T410WL
SUPRA STV-LC24T410WL
General repair guidelines for TV LCD LED
SUPRA STV-LC24T410WL, like other televisions, it is advisable to start repairing from inspection of external and internal elements and modules. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the soldered terminals of transformers or heating elements are detected, it is advisable to establish the causes and consequences of the malfunction that has arisen, as well as to check the connected elements and assemblies.
Malfunctions of the power module can be expressed in different ways, for example, SUPRA STV-LC24T410WL does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the stabilizer (converter) of the processor power may turn out to be faulty. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the network rectifier, as well as the large electrolytic capacitor of the filter of the network rectifier.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself for no reason that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the SUPRA STV-LC24T410WL TV does not have an image, but there is sound, a malfunction in the LED backlight circuits of the HK236WLEDM-CH24H panel is likely. It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for excessive ESR.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its Flash 25Q64FVS chips and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Attention to users! Self-repair of a TV SUPRA STV-LC24T410WL without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> CV9202L-T
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC24T410WL, Main: CV9202L-T, Panel: HK236WLEDM-CH24H
The appearance of the MainBoard CV9202L-T is shown in the figure below:CV9202L-T
The MainBoard CV9202L-T uses the SPV9202BD processor, W6310GKB-12 RAM, and SPI FLASH 8Mb ROM.
It is advisable to start the repair of the motherboard by checking all voltage converters and linear stabilizers necessary to provide power to the nodes and chips in operating and standby mode. The processor core is powered by + 1V. Also, for operation of the SPV9202BD, + 2.5V and + 3.3V voltages are required. Check the power supply of the LCD panel (depending on the type, + 5V or + 12V) it is convenient to measure directly on the LVDS connector. If the TV does not exit Stand-by mode, if it has the necessary power supply voltages, does not respond to the Remote Control and control buttons, the SPI Flash 25Q64 firmware should be updated.
CV9202L-T can be used in TVs:
AIWA 24LE7020 (Panel V236BJ1-P01), BBK 22LEM-1006/FT2C (Panel M215HTN01.1 KM215N19-AU-01), DEXP 19A3100 (Panel CX185LEDM), DEXP 22A7100 (Panel T215HVN01.0 M215HVN01.0), FUSION FLTV-24T22 (Panel M236HGE-P02), FUSION FLTV-22T22 (Panel 720p HD 1366x768), SHIVAKI STV-24LED14 (Panel V236BJ1-P01 / CX236LEDM), SUPRA STV-LC24T410FL (Panel M236HGE-P01), SUPRA STV-LC19T410WL (Panel HK185WLEDM CH25H), SUPRA STV-LC22T410FL (Panel LC215DT5A), SUPRA STV-LC24T410WL (Panel HK236WLEDM-CH24H), SUPRA STV-LC19T880WL (Panel LC185TT7A).
Main features of the SUPRA STV-LC24T410WL device:
Installed matrix (LED-panel) HK236WLEDM-CH24H.
The required supply voltage for all nodes of the TV SUPRA STV-LC24T410WL provides a switching power supply.
MainBoard - the main board (motherboard) is a CV9202L-T module using Cpu chips: Sunplus SPV9202BD, DDRAM: W6310GKB-12, Spi Flash: 25Q64 and others.
The ST03WS-2A-E tuner provides reception of television programs and tuning to channels.
LED TV SUPRA STV-LC24T410WL with LCD HK236WLEDM-CH24H, diagonal size 24 "(61 cm) 16: 9 format. The required brightness of the screen 250 cd / m² is provided by LED backlight LED. Dynamic contrast ratio of 60,000: 1 is achieved by special control LEDs work depending on the illuminated areas in the plot.In this model, an LED panel with the end position of the backlight LEDs, Edge LED, is used. The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, MKV, JPEG .
The power of the sound system 6 W (2x3 W) provide two speakers. It uses the NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, RGB, VGA, HDMI, 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. A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: With stand 571x396x187 mm, Without stand 571x361x53 mm.
Attention! The HK236WLEDM-CH24H panel of a SUPRA STV-LC24T410WL 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.
