Technical description and composition of the SUPRA STV-LC3217W TV, panel type and modules used. The composition of the modules.SUPRA
Model: STV-LC3217W
Chassis / Version: V3L02 // V5L11
Panel: LC320WXE-SBV1 // LM315TA-T01
Inverter (backlight): IPB733V4
PWM Inverter: SG3525AN, LM324
Power Supply (PSU): IPB733V4
PWM Power: LD7535 (PWM SOT23-6 KrP35), L6562A (PFC)
MainBoard: T.MS18VG.81B 11467 // T.MS18VG.81B 12145
IC MainBoard: 25Q32BSIG, IT6633E-P, TPA3110D2, AIC2857F;
Tuner: CDT3SP5I2-36
SUPRA
Model: STV-LC3217W
Chassis / Version: CV182H-B
Panel: HV320WX2-101
MainBoard: CV182H-B
IC MainBoard: Flash 25Q32
STV-LC3217W Specifications
SUPRA STV-LC3217W
General recommendations for TV LCD repair
Repair and diagnostics of any electronic device, in particular SUPRA with CV182H-B chassis, it is advisable to begin with a careful external examination of the internal and external elements. 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. Electrolytic capacitors of filters with a swollen case, as well as ring cracks formed in the soldering of the leads of heating elements or a layer of coal on burned out resistors sometimes prompt the repairman about the causes of the malfunction and the possible consequences.
If the TV does not turn on, none of the indicators on its front panel are on or blinking. Also, if the TV does not respond to the remote control and buttons, does not emit any sounds or any signs of operability when turned on, there is a certain probability that the power module is faulty and needs repair. Sometimes a problem with similar manifestations can occur only in the absence of processor power, which is typical for certain SUPRA models. The first step is to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse in the power supply is broken, in most cases a breakdown of the power switch (s) is detected, which can be integrated with a PWM controller, or a separate field-effect transistor can be used. You should also check the diodes of the rectifier bridge and the electrolytic capacitor of the mains rectifier filter.
It should be borne in mind that in the practice of repair, it is extremely rare for key transistors in switching power supplies (SMPS) to fail without reasons that should be looked for by checking other components, for example, a key breakdown can provoke faulty elements of damper circuits, or dried electrolytic capacitors or broken primary resistors power supply circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM regulator microcircuit are subject to verification, which it is desirable to check by replacement.
Sometimes the SUPRA STV-LC3217W TV does not have a picture, but there is sound, or the picture appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or the lamps themselves, which can be checked by replacing. In such cases, it is necessary to make sure that all electrolytic capacitors of the filter are in good working order for the power supply of the inverter itself, including the power supply unit (power supply unit). It should be remembered that when the protection is turned off in order to diagnose a malfunction, there is always a risk of failure of the power elements of the inverter. After repairs, it is imperative to restore all standard converter protection circuits.
Diagnostics and repair of the CV182H-B motherboard is carried out by checking the functionality of the stabilizers or power converters of the module chips. In some cases, a software update is required. In some cases, it is necessary to check or replace (if necessary) elements of the MB (SSB) - Flash 25Q32 board. In cases where a BGA processor is used, its malfunction is usually detected by the local warm-up method.
Owners and users of the SUPRA STV-LC3217W TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC3217W, Main: C182H-B, Panel: HV320WX2-101
The appearance of the MainBoard CV182H-B is shown in the figure below:CV182H-B
CV182H-B can be used in TVs:
SUPRA STV-LC4217F (Panel LC420WUE(SC)(V1)), SUPRA STV-LC3217W (Panel HV320WX2-101).
Main features of SUPRA STV-LC3217W device:
Installed matrix (LCD panel) HV320WX2-101.
The necessary supply voltages for all nodes of the SUPRA STV-LC3217W TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a CV182H-B module, using Flash 25Q32 chips and others.
Additional technical information about the panel:
Brand: BOE
Model: HV320WX2-101
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)
Transmissivity: 5.25% (with Polarizer)
Contrast Ratio: 1200: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
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. A 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 a graphic resolution of 720p (HD Ready) .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 multimedia 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 mains is 138 W.
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!