Technical description and composition of the SUPRA STV-LC32ST1000W TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC32ST1000W
Chassis / Version: 5800-A7N01G-0P10
Panel: SDL320HY (CD0-702) (05)
LED backlight: JL.D32061330-001QS-M YAL13-00630300-24
T-CON: MT3151A05-5-XC-9
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
PWM Power: SOIC8
MOSFET Power: TO-252
MainBoard: 5800-A7N01G-0P10
IC MainBoard: SPI Flash: 25L1606E. AUDIO: TAS5707
Tuner: 5800-J7N01G-0P00 + SAT
STV-LC32ST1000W Specifications
SUPRA STV-LC32ST1000W
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- SUPRA STV-LC32ST1000W 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.
A malfunction in such cases should be looked for in the elements of the power source - the mains voltage converter (AC / DC), which is located on the MainBoard 5800-A7N01G-0P10. Its output voltages should be measured and, in their absence, the power switches (TO-252) and rectifier diodes should be checked for the probability of a short circuit in the converters.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency short-circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key is often cut off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying the PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) SOIC8, in the absence of external damage and short circuit between the terminals, are checked by replacing them with a known good one.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
Usually, in such cases, a malfunction is detected in the nodes of the backlight of the LED panel. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Usually, Chinese multimeters lightly light up one 3-volt LED if you connect the probes to it in the forward direction (red probe to the anode, black 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 5800-A7N01G-0P10 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). In cases of complex MB (SSB) repairs and with the necessary skills and equipment, it may sometimes be necessary to replace its SPI Flash: 25L1606E chips. AUDIO: TAS5707 and other possible defective components. Malfunctions associated with the use of BGA soldering technologies are usually easily diagnosed by the warm-up method.
Before changing the 5800-J7N01G-0P00 + SAT tuner, if it is not possible to tune to television channels, you should make sure that there are supply voltages, which must be measured at the corresponding tuner terminals and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be monitored with an oscilloscope
Attention! Users and owners of STV-LC32ST1000W TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from trying to repair themselves in order to avoid negative consequences that can lead to the complete non-repairability of the device.
The appearance of MainBoard 5800-A7N01G-0P10 is shown in the figure below:5800-A7N01G-0P10
Main features of SUPRA STV-LC32ST1000W device:
Installed matrix (LED panel) SDL320HY (CD0-702) (05).
Matrix control uses the Timing Controller (T-CON) MT3151A05-5-XC-9.
A converter combined with the main board 5800-A7N01G-0P10 is used to power the backlight LEDs.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using SOIC8 microcircuits and TO-252 power switches.
MainBoard - the main board (motherboard) is a 5800-A7N01G-0P10 module, using SPI Flash chips: 25L1606E. AUDIO: TAS5707 and others.
Tuner 5800-J7N01G-0P00 + SAT provides reception of television programs and tuning to channels.
SUPRA LED TV STV-LC32ST1000W with LCD SDL320HY (CD0-702) (05), 32 "(81 cm) 16: 9 format diagonal. The required screen brightness of 240 cd / m² is provided by LED backlighting. Dynamic contrast ratio 80,000: 1 is achieved by special control of the LEDs depending on the illumination of areas in the scene.The display technology of the model 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 standard of graphic decomposition 720p (HD Ready) ...
STV-LC32ST1000W TV is equipped with SMART software, built-in applications and the ability to work on the Internet. Internet connection can be made via Wi-Fi wireless connection. Supported media file formats: MP3, MPEG4, MKV, JPEG.
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), VGA, HDMI x3, MHL, USB x2, Ethernet (RJ-45), Wi-Fi. 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.
Attention! Panel SDL320HY (CD0-702) (05) SUPRA LED TV STV-LC32ST1000W 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.
