Technical description and composition of the SUPRA STV-LC32LT0110W TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC32LT0110W
Chassis / Version: V1U04
Panel: CV320H1-F01
LED driver (backlight): integrated into MainBoard
PWM LED driver: SO-8
MOSFET LED driver: TO-252
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: TO-252
MainBoard: HK.T.S2T512CP539
IC MainBoard: CPU: 9206B, SPI Flash 25Q64
Tuner: NoName
STV-LC32LT0110W Specifications
SUPRA STV-LC32LT0110W
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- SUPRA STV-LC32LT0110W TV does not turn on. There are no signs of operability. The indicators on the front panel do not light up or blink, the TV does not respond to the control buttons.
In such cases, the common power supply is often faulty - the AC / DC converter of the mains voltage, which is combined with the elements of the main board HK.T.S2T512CP539. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (TO-252) and rectifier diodes in the converters for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in short-circuit mode, and in case of short-circuit in the elements of the primary circuit, the mains fuse usually breaks.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM regulator, in frequency-setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) PWM SOT23-6 are usually checked by replacing them with new ones, or knowingly working.
- There is no image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.
Usually, in such cases, there is no backlighting of the LED panel (matrix). The reason can be found in the malfunction of the LEDs, in the violation of the contact connections of the LED strips, or in the provision of their power supply (LED driver).
Without a special current source, it is impossible to check the line of LEDs connected in series, and it is unsafe for them to use any voltage sources above 12V for this purpose. Then it remains only to open the panel and check each LED separately. Typically, Chinese multimeters with a 9V power supply lightly light up one 3-volt LED, if you connect the probes to it in the forward direction, the red probe to the anode, the black one to the cathode. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or broken into the K / Z.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the HK.T.S2T512CP539 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). If it is not possible to replace the MB (SSB) board, it is necessary to check the serviceability of its elements - CPU: 9206B, SPI Flash 25Q64. Defective components must be replaced.
If there is no reception of TV channels, but the TV is working properly from external devices, first of all, you need to check the supply voltage of the NoName tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Attention to TV owners! Attempts to repair SUPRA STV-LC32LT0110W on your own are not recommended by the manufacturer and can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC32LT0110W V1U04, Main: HK.T.S2T512CP539, Panel: CV320H1-F01
Main features of SUPRA STV-LC32LT0110W device:Installed matrix (LED panel) CV320H1-F01.
To power the backlight LEDs, a converter combined with the main board HK.T.S2T512CP539 is used, controlled by the SO-8 PWM controller. TO-252 switches are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using SOT23-6 PWM microcircuits and TO-252 power switches.
MainBoard - the main board (motherboard) is a HK.T.S2T512CP539 module, using CPU chips: 9206B, SPI Flash 25Q64 and others.
Tuner NoName provides reception of television programs and tuning to channels.
SUPRA LED TV STV-LC32LT0110W with LCD CV320H1-F01, 32 "(81 cm) 16: 9 diagonal. The required screen brightness of 280 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 10,000: 1 is achieved by special control operation of LEDs depending on the illumination of areas in the scene.The model's display technology uses LED LED backlighting.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the 720p graphic resolution standard (HD Ready) .Supported media file formats: MPEG4, HEVC (H.265), MKV, JPEG.
Speaker power 14 W (2x7 W) is provided by two speakers. Uses NICAM stereo signal processing system and Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, HDMI x2, USB. A headphone output is provided. The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2 standards.
Dimensions: with stand 730x474x187 mm, without stand 730x431x78 mm.
Attention! The panel CV320H1-F01 of the SUPRA STV-LC32LT0110W LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.