Technical description and composition of the SUPRA STV-LC3202W TV, panel type and modules used. The composition of the modules.SUPRA
Model: STV-LC3202W
Chassis / Version: TV3201-ZC01-02
Panel: V315B1-L01
T-CON: V315B1-C01; EM63615TS-7G, CM2681A-KQ, AS15-G
Inverter (backlight): I315B1-16A
PWM Inverter: OZ964GN
MOSFET Inverter: AO4614
Trans Inverter: 4018L
Power Supply (PSU): MLT666 REV: 2.8
PWM Power: MC0628R, L6562D, OB2262 (SOT23-6)
MOSFET Power: 18N50, 6N60C
MainBoard: TV3201-ZC01-02 (C) P / N: 303C3201075
IC MainBoard: MST9X88LD, 25X40VNIG, HY5DU281622FTP-5, STA540SA
Tuner: JS-6H2 / 121
STV-LC3202W Specifications
SUPRA STV-LC3202W
General recommendations for TV LCD repair
Possible malfunctions
- SUPRA STV-LC3202W TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up or flash.
With similar manifestations, a malfunction is most likely found in the MLT666 power supply module. Its output voltages should be measured, and in their absence, check the serviceability of the power switches (18N50, 6N60C) of the converters and rectifier diodes for the probability of 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 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) MC0628R, L6562D, OB2262 (SOT23-6), in the absence of external damage and short circuit between the terminals, are checked by replacing them with known good ones.
- 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 defect can be caused by problems in the nodes or elements of the display backlight, or in the power supply of lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, ring the power switches in its converter for breakdown and the secondary windings of the transformers for an open circuit.
Sometimes it is necessary to disable the inverter protection for diagnostic purposes. In such cases, special care must be taken during work, and the protective circuits must be restored immediately after the repair is completed.
- 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 TV3201-ZC01-02 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). When repairing the MB board, you need to check its components MST9X88LD, 25X40VNIG, HY5DU281622FTP-5, STA540SA. Defective elements must be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.
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 power supply voltage of the JS-6H2 / 121 tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Owners of the STV-LC3202W TV are advised to contact only qualified specialists with the necessary work experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> STV-LC2602W, STV-LC3202W Sсhematic diagram
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> I315B1-16A Invertor Schematic
The appearance of the MainBoard TV3201-ZC01-02 is shown in the figure below:TV3201-ZC01-02
TV3201-ZC01-02 can be used in TVs:
SUPRA STV-LC2601W (Panel V260B1-L02 REV.C1), SUPRA STV-LC2602WD (Panel 26 "), SUPRA STV-LC3201W (Panel V315B1-L01), SUPRA STV-LC3202W (Panel V315B1-L01).
External view of the power supply
Main features of the SUPRA STV-LC3202W device:
Installed matrix (LCD panel) V315B1-L01.
Matrix control uses Timing Controller (T-CON) V315B1-C01 ;.
To power the backlight lamps, an I315B1-16A inverter is used, controlled by an OZ964GN PWM controller. A 4018L transformer is installed in the inverter converter. The switches of the AO4614 type are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC3202W TV is carried out by the MLT666 power module, or its analogs using MC0628R, L6562D, OB2262 (SOT23-6) microcircuits and power switches of 18N50, 6N60C type.
MainBoard - the main board (motherboard) is a TV3201-ZC01-02 module, using MST9X88LD, 25X40VNIG, HY5DU281622FTP-5, STA540SA and others.
The JS-6H2 / 121 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CMO
Model: V315B1-L01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
SUPRA LCD TV STV-LC3202W with LCD V315B1-L01, 32 "(81 cm) 16: 9 diagonal. 400 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Contrast is the ratio of maximum brightness to the minimum is 1200: 1. 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) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and formation digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i.
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, audio x3, S-Video, component, RGB, VGA, HDMI. 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, 1280x1024, 1360x768.
Dimensions: With stand 876x653x180 mm, Without stand 800x598x100 mm.
Attention! SUPRA STV-LC3202W LCD TV panel V315B1-L01 is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!