Technical description and composition of the SUPRA STV-LC3217AWL TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC3217AWL STV-LC3217W
Chassis / Version: V4L10
Panel: HV320WX2-201
MainBoard: T.MS18VG.81B 12145
IC MainBoard: Flash 25Q32FL
Tuner: CDT-3SP512-36
STV-LC3217W Specifications
SUPRA STV-LC3217AWL
General recommendations for TV LCD LED repair
SUPRA STV-LC3217AWL, like other TVs, it is advisable to start repairing with a careful examination of external and internal elements and modules. Sometimes, based on the visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements begin. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for the repairman can be a significant clue in assumptions about the causes and consequences of a malfunction.
In the case when the STV-LC3217AWL does not turn on, does not respond to the remote control and front panel buttons, does not blink lights and does not show any signs of operability, the power module is probably faulty in this case. If it is working properly with such manifestations, it is necessary to check the processor power regulator (converter) on the motherboard. In general, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the mains input. If it is cut off, then the diodes of the rectifier bridge and the key transistor of the converter, which can be located either on a separate heatsink or integrated with a PWM controller into a common microcircuit, should be checked for a breakdown of PN junctions. Options are possible.
The reasons for the breakdown of the power switch in switching power supplies (SMPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of a PWM controller microcircuit or breaks in resistors in its strapping.
If SUPRA STV-LC3217AWL has no image, there is sound and the channels are switched, there is a possibility of a malfunction in the circuit of the backlight LEDs of the BCTH315-08265C811FJ panel, or their power converter - LED driver. Sometimes, when turned on, the image appears and immediately disappears. In such cases, it is necessary to check the electrolytic capacitors of the power supply filter of the LED driver itself, including in the secondary rectifier of the main power supply unit.
To check the health of the LEDs and contact connections in their power supply circuit, it is necessary to disassemble the panel.
It should be remembered that it is not possible to determine an open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or microcircuit power converters and, if necessary, update the software (software).
Repair of the board and replacement of Flash 25Q32FL microcircuits are carried out if the necessary equipment and the corresponding element base are available. Malfunctions associated with the use of BGA soldering technologies can be localized by warming up.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the supply voltage of the varicaps of the CDT-3SP512-36 tuner, which is usually within 30-33V, as well as other supply voltages at the tuner outputs.
Attention to users! Self-repair of the SUPRA STV-LC3217AWL TV without proper qualifications and experience can lead to its complete non-repairability!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> Supra STV-LC3217W V4L10
Additional MainBoard RepairIn cases where there was a failure in the SPI FLASH software produced by Winbond, we recommend replacing the microcircuit with a new one. Often faulty Winbond microcircuits can temporarily restore their operability after temperature exposure, for example, when a soldering station is heated by a hairdryer. Sometimes this is enough to read the standard software content.
The appearance of the MainBoard T.MS18VG.81B is shown in the figure below:
T.MS18VG.81B
T.MS18VG.81B can be used in TVs:
AKAI LEA-32V07P (Panel T315XW06 V.0), BBK LEM3283 V1.0 (Panel LC320EXN SDA1), BBK LEM3283F (Panel V315H3-LE4 Rev.C1), ERISSON 42LEN60 (Panel LC420EUN), ERISSON 32LEN60 (Panel LTA320AN01 D02 ), FUSION FLTV-32H20B (Panel LM315TA-T01), SUPRA STV-LC3217W (Panel LC320WXE-SBV1), SUPRA STV-LC3217AWL STV-LC3217W (Panel HV320WX2-201), SUPRA STV-LC3277W (Panel HV320WX2-201), SUPRA STV-LC32170F (Panel HK315TVM-HHC9H).
Main features of SUPRA STV-LC3217AWL device:
Installed matrix (LED-panel) HV320WX2-201.
The necessary supply voltages for all nodes of the SUPRA STV-LC3217AWL TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a T.MS18VG.81B module, using Flash 25Q32FL chips and others.
The CDT-3SP512-36 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: BOE
Model: HV320WX2-201
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AFFS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Transmissivity: 6.6% (with Polarizer)
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 8 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
SUPRA LCD TV STV-LC3217W with LCD HV320WX2-101, 32 "(81 cm) 16: 9. Brightness 450 cd / m² provided by CCFL (EEFL) fluorescent lamps. Contrast is the ratio of maximum brightness to a minimum of 4000: 1. Dynamic contrast ratio of 16000: 1 is achieved by a special control of the backlight.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) graphics standard. Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC Graphic processing and digital signal formation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported media file formats: MP3, MPEG4, JPEG.
Speaker power 12 W (2x6 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 x2, component, SCART, VGA, HDMI x3, USB. 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, 1360x768.
The power consumed by the TV in operating mode from the network is 138 watts.
Dimensions: With stand 793x565x205 mm, Without stand 793x508x89 mm.
Attention! The HV320WX2-101 panel of the SUPRA STV-LC3217W LCD TV is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!
