Technical description and composition of the TV SUPRA STV-LC1625WLD, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC1625WLD
Chassis / Version: V4L06
Panel: B156HW02
Power Supply (PSU): HTX-OP1030-201
PWM Power: R7731AGE (6pin)
MainBoard: CV182L-B
IC MainBoard: FLASH: EN25Q32, MPEG BOARD - AL10-M VER2.8, FLASH: EN25F80, Optics: HOP-120X
Tuner: CDT-3SP512-37
Control: Service Login: INPUT 2580
Technical Specifications STV-LC1625WLD
SUPRA STV-LC1625WLD
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs SUPRA STV-LC1625WLD, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. Often, according to the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
In cases when the SUPRA STV-LC1625WLD TV does not turn on, does not respond to the remote control and buttons, any indicators on the front panel do not light up or blink and there are no sounds and no signs of operability at all, the 12V power supply module is most likely faulty or missing processor power on the motherboard (a typical defect of some SUPRA TVs). When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when turned on, but the sound has other functions that work, there is a high probability of a malfunction of the LED driver (power converter for the backlight LEDs of the B156HW02 panel). In such cases, the general power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
The CV182L-B motherboard must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power stabilizers of the microcircuit are working, a software update may be necessary.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements FLASH: EN25Q32, MPEG BOARD - AL10-M VER2.8, FLASH: EN25F80, optics: HOP-120X. BGA chip malfunctions are usually easy to detect by warming up.
If you suspect a malfunction of the tuner CDT-3SP512-37, first of all, you need to make sure that the voltage of the varicaps (30-33V) is present on the corresponding output of the tuner, as well as other voltage supplying it.
Attention to users! Self-repair of a TV SUPRA STV-LC1625WLD without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC1625WLD(V4L06), Main CV182L-B, Panel: B156HW02
The appearance of the MainBoard CV182L-B is shown in the figure below:The CV182L-B motherboard uses the MST6M182VG processor, combined with a scaler and installed using the BGA technology.
It is advisable to start this type of MainBoard repair by checking the voltage converters and linear stabilizers necessary to provide power to the processor nodes: 1.2V, 2.5V, 3.3V. Check the power of the 5V or 12V LCD panel, depending on the type of panel used, it is advisable directly on the LVDS connector. If, in the presence of the necessary supply voltage, the TV does not exit Stand-by mode, does not respond to the remote control and control buttons, the SPI Flash software should be updated.CV182L-B can be used in TVs:
FUSION FLTV-22T9 (Panel TB215WU3), SUPRA STV-LC1925WL (Panel MT185GW01 V.1), SUPRA STV-LC19810WL (Panel TB190B300-A), SUPRA STV-LC1625WLD (Panel B156HW02), SUPRA STV-LC1937WL (Panel LM185WH2-TLA1).
The appearance of the power supply
Main features of the SUPRA STV-LC1625WLD device:
Installed matrix (LED panel) B156HW02.
The necessary supply voltages for all nodes of the TV SUPRA STV-LC1625WLD are formed by the HTX-OP1030-201 power module or its analogs using R7731AGE (6pin) microcircuits.
MainBoard - the main board (motherboard) is a CV182L-B module using FLASH chips: EN25Q32, MPEG BOARD - AL10-M VER2.8, FLASH: EN25F80, optics: HOP-120X and others.
The tuner CDT-3SP512-37 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: B156HW02 V0 20 Compatible model
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.6 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 344.16x193.59 mm
Shape Style: Wedge (PCBA Bent, Depth? 5.2mm)
Surface: Glare (Haze 0%)
Brightness: 300 cd / m²
Contrast Ratio: 500: 1
Display Colors: 262K (6-bit), CIE1931 60%
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-LC1625WLD with LCD display B156HW02, diagonal size 16 "(41 cm) 16: 9 format. The required brightness of the screen is 200 cd / m² LED backlight LED. Contrast - the ratio of maximum brightness to minimum is 2000: 1. Dynamic contrast ratio of 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-face position of the backlight LEDs - Edge LED. You can watch programs and movies and images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The 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, 1080i, 1080p. Supported formats multimedia files: MP3, VideoCD, SVCD, JPEG.
The power of the acoustic system of sound 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, S-Video, component, SCART, RGB, VGA, HDMI. 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, 1360x768.
The power consumed by the TV in the operating mode from the network is 40 watts.
Overall dimensions: With stand 644x460x165 mm, Without stand 378x289x97 mm.
Attention! The B156HW02 panel of a SUPRA STV-LC1625WLD 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.
