Technical description and composition of the SUPRA STV-LC3275WL TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC3275WL
Chassis / Version: V1J10
Panel: SEL315V1-S00A Rev A1
Power Supply (PSU): 168P-P32TTS-20 5800-P32TTS-0020
PWM Power: 6059 (Stb), L6562, L6599
MainBoard: 5800-A8M81E-0020 V2.0
IC MainBoard: Flash MX25L12845E, EEPROM: 24C02 N16, 24C02 N17
Tuner: TDQ-6T2 / T12B6C
STV-LC3275WL Specifications
SUPRA STV-LC3275WL
General recommendations for TV LCD LED repair
Possible manifestations of defects
- SUPRA STV-LC3275WL does not turn on and does not show any signs of operability at all. Does not blink indicators and does not respond to control buttons.
Usually with similar manifestations, the defect is caused by faulty elements in the main power module 168P-P32TTS-20. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency mode of a short circuit, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is often cut off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers 6059 (Stb), L6562, L6599, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working.
- There is no picture, but there is sound and reaction to the remote control. Or, for a second, the image may appear immediately after switching on.
A malfunction is usually in these cases most likely in the backlight units of the display matrix. The reason may be in the breakage of the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the strings connectors,
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 all that remains is 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, and 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 TV does not turn on, the indicator signals standby or operating mode, or blinks.
Repair or diagnostics of the 5800-A8M81E-0020 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing Flash MX25L12845E, EEPROM: 24C02 N16, 24C02 N17 elements requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
Before replacing the TDQ-6T2 / T12B6C tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. You also need to make sure that the tuner and processor can exchange data via the I2C bus
We remind users again! Attempts to self-repair the SUPRA STV-LC3275WL TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC3275WL V1J10, Main: V1J10, Panel: 720p HD, 1366x768
External view of the power supplyMain features of SUPRA STV-LC3275WL device:
Installed matrix (LED-panel) SEL315V1-S00A Rev A1.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC3275WL TV is carried out by the 168P-P32TTS-20 power module, or its analogs using 6059 (Stb), L6562, L6599 microcircuits.
MainBoard - the main board (motherboard) is a 5800-A8M81E-0020 module, using Flash MX25L12845E chips, EEPROM: 24C02 N16, 24C02 N17 and others.
The TDQ-6T2 / T12B6C tuner provides reception of television programs and tuning to channels.
LED TV SUPRA STV-LC3275WL with LCD display, diagonal size 32 "(81 cm) format 16: 9. The required brightness of the screen 450 cd / m2 is provided by LED backlighting. depending on the illumination of the 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 (HD Ready) graphic resolution standard. Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards.
Speaker power 16 W (2x8 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI x2, USB x2. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
The power consumed by the TV in operating mode from the network is 105 watts.
Overall dimensions: 788x561x196 mm.
TV weight: 11.7 kg.
Attention! SUPRA STV-LC3275WL LED TV panel 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.