Technical description and composition of the TV SUPRA STV-LC18250WL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC18250WL
Chassis / Version: T.VST59.62
Panel: B173HW02 V.1
Power Supply (PSU): Adapter 12V
MainBoard: T.VST59.62
IC MainBoard: CPU TSUMV59XU, Flash 25Q322, TDA-1517P, TPS54329 (PWM Step-down), BL8024 (PWM Step-down marker GG ..)
Tuner: CDT-3NP5I1-10
Technical Specifications STV-LC18250WL
SUPRA STV-LC18250WL
General repair guidelines for TV LCD LED
TV SUPRA STV-LC18250WL, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. In most cases, the repairman can guess the causes of the defect and possible consequences from the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
In the absence of any signs of operability, when the SUPRA STV-LC18250WL does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. When diagnosing and repairing the power supply, first of all, replace the swollen filter capacitors of the secondary rectifiers 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.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the binding of the PWM controller microcircuit are subject to verification, which it is desirable to verify by replacement.
If the SUPRA STV-LC18250WL does not have an image, there is sound and the channels switch, there is a possibility of a malfunction in the backlight LED circuit of the B173HW02 V.1 panel, or their power converter - LED drivers. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main PSU.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
When trying to identify 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 or diagnostics of the T.VST59.62 motherboard should begin by checking the stabilizers or power converters of its microcircuit. If necessary, update the software (software).
If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - CPU TSUMV59XU, Flash 25Q32. Defective components should be replaced.
If you suspect a malfunction of the tuner CDT-3NP5I1-10, first of all, you must make sure that there is a supply voltage on the corresponding output of the tuner.
Owners and users of the SUPRA STV-LC18250WL TV must 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!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC18250WL, Main: T.VST59.62, Panel: B173HW02 V.1
The appearance of MainBoard T.VST59.62 is shown in the figure below:T.VST59.62
It is advisable to start repairing the T.VST59.62 motherboard based on the TSUMV59Xxx multifunction processor by checking the performance of linear voltage stabilizers or voltage converters necessary to provide power to the processor nodes - 1.2V core power, DDR 1.8V memory and Stand-by 3.3V mode . If there is no image, but if the display backlight is working properly, you should check the power supply voltage of the LCD panel 5V or 12V, depending on the type of panel used.
T.VST59.62 can be used on TVs:
Akai LEA-22V21M (Panel A215ED1DA3-1), ERISSON 22LEN18 (Panel M215HGJ-L21), ERISSON 16LEN18 (Panel N156BGE-L11 Rev.C1), ERISSON 24LEN18 (Panel M236HGE-L20), Fusion FLTV-16L10B (Panel T156LL10-AW4), FUSION FLTV-24T9 (Panel M240HW01 V.B), FUSION FLTV-16T9 (Panel B156XTN02), FUSION FLTV-16T9D (Panel T156LL10-AW4), HYUNDAI H-LED19V13 (Panel CX185LEDM ), SUPRA STV-LC19811FL (Panel M185XTN01.3), SUPRA STV-LC19820WL (Panel LM185WH2), SUPRA STV-LC22820FL (Panel LS215AFTNM), SUPRA STV-LC18250WL (Panel B173HW02 V.1), SUPRA STV-LC22810FL (Panel M215HGE-L21 Rev.C1), SUPRA STV-LC16810WL (Panel B156RW01 V.1), SUPRA STV-LC18251FL (Panel N173HGE-L11 Rev. C1), SUPRA STV-LC22811FL (Panel 1080p Full HD 1920x1080), SUPRA STV-LC1982WL (Panel 1080p Full HD 1920x1080), TELEFUNKEN TF-LED22S3 (Panel M215HGE-P02).
Main features of the SUPRA STV-LC18250WL device:
Installed matrix (LED panel) B173HW02 V.1.
To power all internal nodes of the SUPRA STV-LC18250WL TV, an external adapter 12V type is used.
MainBoard - the main board (motherboard) is a T.VST59.62 module, using CPU chips TSUMV59XU, Flash 25Q322, TDA-1517P, TPS54329 (PWM Step-down), BL8024 (PWM Step-down marker GG ..) and others.
The tuner CDT-3NP5I1-10 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: B173HW02 V1 3 Compatible model
Type: a-Si TFT-LCD, Panel
Diagonal size: 17.3 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 381.888x214.812 mm
Shape Style: Wedge (PCBA Bent, Depth? 5.2mm)
Surface: Antiglare
Brightness: 300 cd / m²
Contrast Ratio: 400: 1
Display Colors: 262K (6-bit), CIE1931 72%
Response Time: 8 (Tr + Td)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 6-bit), 40 pins
Voltage: 3.3V
LED TV SUPRA STV-LC18250WL with LCD B173HW02, diagonal size 17 "(43 cm) in 16: 9 format. The required brightness of the screen is 220 cd / m² LED backlight LED. Dynamic contrast ratio 10000: 1 is achieved by special control of the LEDs depending on the illumination of areas in the plot.This model uses an LED panel with the end position of the backlight LEDs - Edge LED.You can watch programs and movies and images in high quality HD at a resolution of 1600x900 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 digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p. Supported media file formats: MP3, MKV, JPEG.
The power of the sound system 6 W (2x3 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, VGA, HDMI, USB. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
Overall dimensions: With stand 425x330x125 mm, Without stand 425x275x45 mm.
Attention! The B173HW02 V.1 panel of a SUPRA STV-LC18250WL LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.