Technical description and composition of the TV SUPRA STV-LC24T400WL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC24T400WL
Chassis / Version: HK-T.SP9202V50
Panel: V236BJ1-P01
T-CON: CM1801, CM501, CM601, 428RP (ST24C128)
LED driver (backlight): integrated into PSU
PWM LED driver: BIT3251
MOSFET LED driver: ME15N10-G
Power Supply (PSU): AY042D-1SF08-179
PWM Power: LD7536 (PWM 6PIN)
MainBoard: HK-T.SP9202V50
IC MainBoard: 25Q32, MN88472, TDA1517P, NT5CB64M16FP-DH
Tuner: NoName
Technical Specifications STV-LC24T400WL
SUPRA STV-LC24T400WL
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs SUPRA STV-LC24T400WL, as well as other electronic devices, it is recommended to start with an external examination of the 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 starting the necessary measurements. 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.
Sometimes the SUPRA STV-LC24T400WL 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 a failure of the common power module. If it is working properly, it is necessary to check the processor batteries on the SSB (Main Board). When diagnosing and repairing the power supply, first of all, replace the swollen filter capacitors of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip may also cause a breakdown of the power switch of the converter.
If the SUPRA STV-LC24T400WL TV does not have an image, but there is sound, there may be a malfunction in the LED backlight circuits of the LCD panel V236BJ1-P01. 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 is impossible to detect a break in the line of LEDs without disassembling the panel with a simple multimeter. LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
Repair or diagnostics of the HK-T.SP9202V50 motherboard should begin by checking the stabilizers or power converters of its microcircuits. 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 25Q32 chips and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Once again, remind users! Attempts to independently repair a SUPRA STV-LC24T400WL TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC24T400WL, Main: HK-T.SP9202V50, Panel: LCD V236BJ1-P01
The appearance of the MainBoard HK-T.SP9202V50 is shown in the figure below:HK-T.SP9202V50
HK-T.SP9202V50 can be used in TVs:
SUPRA STV-LC24T400WL (Panel V236BJ1-P01), SUPRA STV-LC22T400FL (Panel HM215WU1-500).
The appearance of the power supply
Key Features of SUPRA STV-LC24T400WL:
Installed matrix (LED panel) V236BJ1-P01.
The matrix control uses the Timing Controller (T-CON) CM1801.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a BIT3251 PWM controller. As power elements of the LED driver, keys of the type ME15N10-G are used.
The necessary supply voltages for all nodes of the TV SUPRA STV-LC24T400WL are formed by the power module AY042D-1SF08-179, or its analogs using microcircuits LD7536 (PWM 6PIN).
MainBoard - the main board (motherboard) is an HK-T.SP9202V50 module, using 25Q32, MN88472, TDA1517P, NT5CB64M16FP-DH, and others.
The NoName tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V236BJ1-P01
Type: a-Si TFT-LCD, CELL
Diagonal size: 23.6 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 521.471x293.184 mm
Surface: Antiglare (Haze 1%), Hard coating (3H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 5.5% (with Polarizer)
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
LED TV SUPRA STV-LC24T400WL with LCD V236BJ1-P01, diagonal size 24 "(61 cm) 16: 9 format. This model uses a LED panel with the end position of the backlight LEDs - Edge LED. You can watch programs and movies and images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p , 720p, 1080i Supported media file formats: MP3, MPEG4, DivX, MKV, JPEG.
The power of the sound system 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, VGA, HDMI, USB. 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 a support 605x445x150 mm, Without a support 605x410x47 mm.
Attention! The V236BJ1-P01 panel of a SUPRA STV-LC24T400WL 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.
