Technical description and composition of the TV SUPRA STV-LC24T810FL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC24T810FL
Chassis / Version: T.MSD309.B61B
Panel: TB236F101-A
MainBoard: T.MSD309.B61B
IC MainBoard: CPU: MSD309BT-Z1, FLASH: GD25Q32
Tuner: CD-9NT352-10
Technical Specifications STV-LC24T810FL
SUPRA STV-LC24T810FL
General repair guidelines for TV LCD LED
SUPRA STV-LC24T810FL, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. Electrolytic capacitors of filters with a swollen body, as well as ring cracks or a layer of coal on burned-out resistors formed in the soldered terminals of the heating elements, sometimes tell the repairman the causes of the malfunction and possible consequences.
In the absence of any signs of operability, when the SUPRA STV-LC24T810FL does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. You should also check the rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter.
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).
Sometimes the SUPRA STV-LC24T810FL TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the converter for the backlight LEDs of the TB236F101-A panel, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including in the power supply unit (power supply unit).
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
If the motherboard T.MSD309.B61B is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
In cases of attempts to repair the MB board (SSB), you need to check the health of its elements - FLASH: GD25Q32 which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Attention to the owners! Attempts to repair the TV SUPRA STV-LC24T810FL independently are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Chassis MSD309B Schematic diagram
FIRMWARE FOR SPI FLASH -----------> Supra STV-LC24T810FL Main Board T.MSD309.B61B
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC24T810FL, STV-LC24T820FL V2L12, Main: T.MSD309.B61B, Panel: TC236F101-A
If a failure occurs in the SPI FLASH Winbond software, we recommend that you replace the chip with a new one. In addition, faulty Winbond microcircuits can sometimes recover for a while after being heated by a soldering station or even a lighter, which is enough to read its regular contents.
Repair MainBoardThe appearance of MainBoard T.MSD309.B61B is shown in the figure below:
MainBoard T.MSD309.B61B uses the MSD309B processor, DDRAM in BGA memory and SPI Flash ROM of type 25Q32 (4Mb).
It is advisable to start the repair of the motherboard by checking the voltage converters and linear stabilizers necessary to provide power to the nodes in the operating and standby modes. The processor core is powered by a voltage of + 1.5V. Also, the processor requires voltage + 2.5V and + 3.3V.
If the display backlight is working properly and there is no image, it is necessary to check the panel power (depending on the type, + 5V or + 12V), which is more convenient to measure directly on the LVDS connector. If, in the presence of all the supply voltages, the TV does not enter the operating mode, does not respond to the Remote Control and control buttons, update the SPI Flash firmware.
T.MSD309.B61B can be used in TVs:
SUPRA STV-LC24T810FL (Panel TB236F101-A), SUPRA STV-LC24T820FL (Panel TC236F101-A).
Main features of the SUPRA STV-LC24T810FL device:
Installed matrix (LED panel) TB236F101-A.
The required supply voltage for all nodes of the TV SUPRA STV-LC24T810FL provides a switching power supply.
MainBoard - the main board (motherboard) is a module T.MSD309.B61B, using CPU chips: MSD309BT-Z1, FLASH: GD25Q32 and others.
The tuner CD-9NT352-10 provides the reception of television programs and tuning to channels.
LED TV SUPRA STV-LC24T810FL with LCD display TB236F101-A, 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 20,000: 1 is achieved by special control LEDs work depending on the illuminated areas in the plot.In this model, an LED panel with an end arrangement of backlight LEDs is used - Edge LED.The TV features include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition according to the standard 1080p (Full HD ). 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, DivX, MKV, JPEG.
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, audio x2, component, SCART, RGB, VGA, HDMI x2, 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 digital tuner is capable of receiving television channels in DVB-T MPEG4 standards.
The power consumed by the TV in the operating mode from the network is 36 watts.
Overall dimensions: 635x430x115 mm.
TV Weight: 6.8 kg.
Attention! The TB236F101-A panel of a SUPRA STV-LC24T810FL 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.