Technical description and composition of the TV SUPRA STV-LC1637WL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC1637WL
Chassis / Version: CV182L-A V2L06
Panel: B156HW02 V. 5
Power Supply (PSU): Adapter 12V
MainBoard: CV182L-A
IC MainBoard: 751G6JB, 25Q32BVSIG, RT8284N, RT8295AH, YD1517P, SGM330A
Tuner: CDT-3SP5I2-37
Technical Specifications STV-LC1637WL
SUPRA STV-LC1637WL
General repair guidelines for TV LCD LED
An external examination of the external and internal elements should be carried out in a timely manner before the start of dismantling operations. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in soldering will help the master to guess the causes and possible consequences of the malfunction.
In cases where the SUPRA STV-LC1637WL 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 when turning on, the power module is most likely faulty or there is no power processor on the motherboard (a typical defect of some models of TVs SUPRA). First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
In cases where the SUPRA STV-LC1637WL TV has lost its image, and the sound is there and all other functions are functional, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the AU Optronics B156HW02 V.5 panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
In cases of attempts to repair the CV182L-A motherboard, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - Flash Winbond 25Q32BVSIG which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
In cases where there is no tuning to local television channels, make sure that there are supply voltages at the terminals of the tuner CDT-3SP5I2-37.
Attention to users! Self-repair of a TV SUPRA STV-LC1637WL without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC1637WL, Main: CV182L-A, Panel: AU Optronics B156HW02 V.5
The appearance of the MainBoard CV182L-A is shown in the figure below:CV182L-A
Main features of the SUPRA STV-LC1637WL device:
Installed matrix (LED-panel) B156HW02 V.5.
To power all internal nodes of the SUPRA STV-LC1637WL TV, an external adapter 12V type is used.
MainBoard - the main board (motherboard) is a CV182L-A module, using chips 751G6JB, 25Q32BVSIG, RT8284N, RT8295AH, YD1517P, SGM330A and others.
The tuner CDT-3SP5I2-37 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: B156HW02 V5 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-LC1637WL with LCD display B156HW02, diagonal size 16 "(41 cm) 16: 9 format. The required brightness of the screen 200 cd / m² is provided by LED backlight LED. Contrast - the ratio of maximum brightness to minimum is 500: 1. Dynamic contrast ratio of 10000: 1 is achieved by special control of the LEDs depending on the illumination of areas in the plot.In this model, an LED panel with an end-face arrangement of the backlight LEDs is used - Edge LED. 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, MPEG4, MKV, 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, 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, 1280x1024, 1360x768.
The power consumed by the TV in the operating mode from the network is 25 watts.
Overall dimensions: 393x301x120 mm.
TV Weight: 1.6 kg.
Attention! The B156HW02 V.5 panel of a SUPRA STV-LC1637WL 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.
