Technical description and composition of the SUPRA STV-LC32LT0050W TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC32LT0050W
Chassis / Version: V1S09
Panel: V320BJ6-Q01
T-CON: V320BJ6-Q01 REV.C1
LED driver (backlight): integrated into MainBoard
PWM LED driver: BIT3267
MOSFET LED driver: ME15N10-G
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: SMK0760F TO-220F 600V 7A
MainBoard: CV512H-Q42
IC MainBoard: CPU: S2T512, SPI FLASH: 25Q64FVSIG, Audio: RT9108NB
Tuner: CDT-9NT372-RD60
STV-LC32LT0050W Specifications
SUPRA STV-LC32LT0050W
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- SUPRA STV-LC32LT0050W 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 primarily in the circuit of a switching power supply (SMPS) - a converter (AC / DC) of the mains voltage, which is combined with the MainBoard CV512H-Q42 in this model. Its output voltages should be measured and, in their absence, the serviceability of the power switches (SMK0760F TO-220F 600V 7A) and rectifier diodes in the converters should be checked for possible breakdown.
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, 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 most 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 PWM SOT23-6, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.
- There is no picture, but there is sound and all other TV functions are working. The image sometimes appears for a second immediately after switching on and disappears.
In such cases, the most likely malfunction of the LED panel backlighting elements. 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,
To test the LED strips, to open all the transitions of the LEDs, you need several tens of volts or more, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED junctions in forward bias, you can sometimes detect the presence of a protective zener diode PN junction by connecting the probes in the opposite direction. If the zener diode is cut off or broken in K / Z, then the LED is faulty and requires replacement.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the CV512H-Q42 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 health of its elements - CPU: S2T512, SPI FLASH: 25Q64FVSIG, Audio: RT9108NB. Defective components must be replaced.
Before changing the CDT-9NT372-RD60 tuner, if it is not possible to tune to TV 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
Owners and users of the SUPRA STV-LC32LT0050W TV should be aware that self-repair without special knowledge, skills and qualifications may be fraught with negative consequences that can lead to the complete non-repairability of the device!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC32LT0050W V1S09, Main: CV512H-Q42, Panel: V320BJ6-Q01
The appearance of MainBoard CV512H-Q42 is shown in the figure below:CV512H-Q42
Main features of SUPRA STV-LC32LT0050W device:
Installed matrix (LED panel) V320BJ6-Q01.
Matrix control uses Timing Controller (T-CON) V320BJ6-Q01.
To power the backlight LEDs, a converter combined with the CV512H-Q42 main board is used, controlled by the BIT3267 PWM controller. The keys of the ME15N10-G type 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 PWM SOT23-6 microcircuits and SMK0760F TO-220F 600V 7A power switches.
MainBoard - the main board (motherboard) is a CV512H-Q42 module, using CPU: S2T512 microcircuits, SPI FLASH: 25Q64FVSIG, Audio: RT9108NB and others.
The CDT-9NT372-RD60 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V320BJ6-Q01
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%)
Transmissivity: 6.0% (with Polarizer)
Contrast Ratio: 3000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 8.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
SUPRA LED TV STV-LC32LT0050W with LCD V320BJ6-Q01, 32 "(81 cm) 16: 9 diagonal. The required screen brightness of 260 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 100000: 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: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 16 W (2x8 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, VGA, HDMI x2, USB x2. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The power consumed by the TV in operating mode from the network is 65 W.
Overall dimensions: 810x508x140 mm.
Attention! The panel V320BJ6-Q01 of the SUPRA STV-LC32LT0050W 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.
