Technical description and composition of the SUPRA STV-LC32800AWL TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC32800AWL
Chassis / Version: V1M01
Panel: HV320WX2-201 (HK315LEDM-BHA4H)
LED backlight: YP 37020575 2 * 36 led
LED driver (backlight): integrated into PSU
PWM LED driver: OB3362RP
MOSFET LED driver: QM3014D, ME12P04
Power Supply (PSU): HKL-320401 C Rev 1.2 - 6003010146
PWM Power: LD7537R
MOSFET Power: ME15N10-G
MainBoard: T.MS18VG.72 (T.VST59.A5)
IC MainBoard: CPU: TSUMV59XE, FLASH: 25Q32BVS
Tuner: CDT-3NP5I1-10
STV-LC32800AWL Specifications
SUPRA STV-LC32800AWL
General recommendations for TV LCD LED repair
SUPRA STV-LC32800AWL, like other TVs, it is advisable to start repairing with a careful examination of the external and internal elements and modules. Based on visible external changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of a defect before taking the necessary measurements. If charred resistors, swollen electrolytic or sintered capacitors, ring cracks in the soldering of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction, as well as to check the connected elements and assemblies.
Malfunctions of a power supply module can be expressed in different ways, for example, SUPRA STV-LC32800AWL does not turn on at all and the control lamps on its front panel do not light up or blink, all signs of operability are absent. It should be noted that the processor power regulator (converter) may be faulty with the same external manifestations. In general, first of all, it is necessary to check the electrolytic capacitors of the filters of the secondary rectifiers 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.
As a rule, switches in switching power supplies (SMPS) are quite reliable and rarely fail without reasons that should be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM microcircuit is checked by replacing it with a known good one.
If SUPRA STV-LC32800AWL has no picture but sound, the HV320WX2-201 panel backlight LEDs (HK315LEDM-BHA4H) or their power converter may be faulty. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are in good working order.
A malfunction in the backlight circuits often occurs due to an open circuit in the power supply circuit of the LED lines. It is required to disassemble the panel and check the LEDs themselves, the ration of their outputs, as well as the reliability of the connections in the connectors and the ration of the connector pins.
It is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally a current source.
Repair or diagnostics of the motherboard T.MS18VG.72 (T.VST59.A5) should start with checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software).
In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CPU: TSUMV59XE, FLASH: 25Q32BVS with new or known good ones. FLASH 25Q32 firmware is included.
Before replacing the CDT-3NP5I1-10 tuner, if there is no tuning to the channels, you must first check the supply voltage at its terminals, including the supply of varicaps (30-33V).
Owners of the STV-LC32800AWL TV are advised to contact only qualified specialists with experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC32800AWL версия V1M01, Майн: T.MS18VG.72
In 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.
To reduce the backlight current in LED drivers with OB3362RP (TSOP16) controller, increase the total resistance of the resistors from pin 5 (ISET) to the case. The maximum current in each of the four channels (in milliamperes) for the resistor Rset (in kilo-ohms) is determined from the ratio 3000 * 1.2V / Rset.
Additional MainBoard RepairThe appearance of the MainBoard T.VST59.A5 is shown in the figure below:
T.VST59.A5
T.MS18VG.72 can be used in TVs:
SUPRA STV-LC32800AWL (Panel HV320WX2-201 (HK315LEDM-BHA4H)), SUPRA STV-LC32520WL (Panel T320XVN02 001 HK315WLEDM-AHJ8H), SUPRA STV-LC32790WL (Panel HK315LEDM-BH81H(HV320WX2-261)), SUPRA STV-LC46500FL (Panel V460HJ1-PE1), SUPRA STV-LC32510WL (Panel 720p HD 1366x768), SUPRA STV-LC39520FL (Panel V390HJ1-P02 HK390LEDM-CH06H), SUPRA STV-LC32K800WL (Panel HV320WX2-201), SUPRA STV-LC42790FL (Panel HK420LEDM-AH17H), SUPRA STV-LC32K790WL (Panel HK315LEDM), SUPRA STV-LC32520AWL (Panel 720p HD 1366x768), SUPRA STV-LC42K790FL (Panel 1080p Full HD 1920x1080), SUPRA STV-LC32800WL (Panel HK315WLEDM-BHA4A).
Main features of SUPRA STV-LC32800AWL device:
Installed matrix (LED panel) HV320WX2-201 (HK315LEDM-BHA4H).
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the OB3362RP PWM controller. QM3014D, ME12P04 keys are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC32800AWL TV is carried out by the HKL-320401 power supply module, or its analogs using LD7537R microcircuits and ME15N10-G power switches.
MainBoard - the main board (motherboard) is a T.MS18VG.72 module, using CPU chips: TSUMV59XE, FLASH: 25Q32BVS and others.
The CDT-3NP5I1-10 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 LED TV STV-LC32800AWL with LCD HV320WX2-201, 32 "(81 cm) 16: 9. The required brightness of the screen 450 cd / m² is provided by LED backlight. Dynamic contrast ratio of 80000: 1 is achieved by special control operation of LEDs depending on the illumination of areas in the scene.This model uses an LED-panel with an edge arrangement of backlighting LEDs - Edge LED.It is possible to view broadcasts and films and images in high quality HD at a resolution of 1366x768 pixels in the standard graphic resolution 720p (HD Ready) .Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, DivX, MKV , 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, RGB, 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 65 W.
Overall dimensions: 736x502x205 mm.
TV weight: 7.28 kg.
Attention! The HV320WX2-201 (HK315LEDM-BHA4H) panel of the SUPRA STV-LC32800AWL 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.