Technical description and composition of the SUPRA STV-LC32552WL TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC32552WL
Chassis / Version: KL32GT616 // KB-6150 - V1N55
Panel: HV320WX2-201 // BOE-HV320WX2
LED backlight: YP 37020575 2 * 36 led
LED driver (backlight): integrated into Mainboard
PWM LED driver: OZ9902CGN
Power Supply (PSU): integrated into Mainboard
PWM Power: FAN6755
MainBoard: KB-6150 // KL32GT616-BOE-248YTK
IC MainBoard: Flash 25Q32
STV-LC32552WL Specifications
SUPRA STV-LC32552WL
General recommendations for TV LCD LED repair
Repair of the SUPRA STV-LC32552WL TV should begin with a careful external examination of all its constituent elements and modules. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before starting the necessary measurements. If ring cracks are found in the soldering of the element terminals or broken connecting paths, swollen capacitors or charred resistors - all this may be characteristic signs of the causes or consequences of an already known typical malfunction.
Malfunctions of a power supply module can be expressed in different ways, for example, SUPRA STV-LC32552WL 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. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the secondary rectifier filter and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes and transistors in the primary circuit.
Power switches in switching power supplies (SMPS) fail for no reason very rarely and, in case of their breakdown, it is necessary to look for a malfunction in the stabilization circuits, checking electrolytic capacitors, semiconductor devices and resistors in the primary circuit. The reason may be a malfunction of the PWM regulator microcircuit, which can only be checked by replacing it with a new or known good one.
If SUPRA STV-LC32552WL has no image, but there is sound, the hv320wx2-201 panel backlight LEDs 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.
To check the health of the LEDs, as well as the contact connections in the ruler circuit, the panel must be disassembled.
When trying to detect a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Repair of the KL32GT616-BOE-248YTK motherboard must begin with diagnostics and testing of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - Flash 25Q32, which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its pins with the board (indicated by heating)
Attention to users! Self-repair of the SUPRA STV-LC32552WL TV without appropriate qualifications and experience can lead to its complete non-repairability!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC32552WL, Main: KL32GT616-BOE-248YTK, Panel: hv320wx2-201
The appearance of the MainBoard T.VST29.61C is shown in the figure below:T.VST29.61C
T.VST29.61C can be used in TVs:
GOLDSTAR LT-24A300F (Panel M236HGE-P01), GoldStar LD-19A300R (Panel V185B1-PE1), SUPRA STV-LC19410WL (Panel M185BGE-P02 HK185WLEDM-CH15H), SUPRA STV-LC2277FL (Panel LM215DA-T01), SUPRA STV-LC22410WL (Panel LM216DA-T01), SUPRA STV-LC24410FL (Panel M236H1-P01 HK236WLEDM-CH84H ).
Main features of SUPRA STV-LC32552WL device:
Installed matrix (LED panel) HV320WX2-201 or BOE-HV320WX2.
An integrated LED driver is used to power the backlight LEDs, controlled by the OZ9902CGN PWM controller.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using FAN6755 microcircuits.
MainBoard - the main board (motherboard) is a KB-6150 module, using Flash 25Q32 chips and others.
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-LC32552WL with LCD HV320WX2-201, 32 "(81 cm) 16: 9 diagonal. The required screen brightness of 250 cd / m² is provided by LED backlighting. 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 backlight 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, WMA, MKV, JPEG ...
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 x2, component, VGA, HDMI x3, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
The power consumed by the TV in operating mode from the network is 65 W.
Dimensions: With stand 731x487x180 mm, Without stand 731x445x99 mm.
Attention! The HV320WX2-201 panel of the SUPRA STV-LC32552WL 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.