Technical description and composition of the TV SUPRA STV-LC1625WL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC1625WL
Chassis / Version: T.SP7050.13A
Panel: BT156GW01 V.A // Panel: B156HW02 V. 1
LED driver (backlight): integrated into panel
Power Supply (PSU): HTX-OP1030-201
PWM Power: PWM SOT23-6 (R7731AGE)
MainBoard: T.SP7050.13A // CV182L_B
IC MainBoard: EN25F80, 24C32, TDA9885TS
Tuner: TDQ-6K / GW125H
Technical Specifications STV-LC1625WL
SUPRA STV-LC1625WL
General repair guidelines for TV LCD LED
SUPRA STV-LC1625WL, like other televisions, it is advisable to start repairing with a careful examination of the external and internal 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 the necessary measurements are taken. In some cases, faulty elements can be seen with the naked eye, for example, carbonized resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the STV-LC1625WL TV does not turn on, does not make any sounds when turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the stabilizer or power converter of the control processor may be faulty, which is typical for some SUPRA models. 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.
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 the SUPRA STV-LC1625WL does not have an image, but there is sound and the TV is controlled from the remote control, there may be a malfunction in the backlight circuits of the BT156GW01 V.A. panel. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
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.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
On the T.SP7050.13A motherboard, in case of a malfunction, you should first check the performance of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
When repairing an MB board, you must check its components EN25F80, 24C32, TDA9885TS. Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating. If chips with BGA soldering technology are used, a problem in its implementation is detected by local heating of the chip.
Before changing the TDQ-6K / GW125H tuner, if it is not possible to tune to television channels, make sure that there are supply voltages, including varicap power (30-33V), which must be measured on the corresponding tuner pins.
Version SUPRA STV-LC1625WL, Ver-V4K11, Panel: B156XW02 V.6, T-con: 15B36-C1F,Attention to the owners! Attempts to repair the TV SUPRA STV-LC1625WL independently are not recommended by the manufacturer and can lead to serious negative consequences!
Main: CV181L-A, Power HTX-OP1030-201,
IR: RMT056-6, Remote: RC3B.
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC1625WL, Version V5L02, Panel: B156HW02 V.1, MainBoard: CV182L_B
FIRMWARE FOR SPI FLASH -----------> (EN25T80-75HCP) SUPRA STV-LC1625WL, Version V1I12, Panel: BT156GW1, MainBoard: T.SP7050.13A-9457
The appearance of MainBoard T.SP7050.13A is shown in the figure below:T.SP7050.13A
The appearance of the power supply
Main features of the SUPRA STV-LC1625WL device:
Installed matrix (LED-panel) BT156GW01 V.A or Panel: B156HW02 V. 1.
An integrated LED driver is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the SUPRA STV-LC1625WL TV are generated by the HTX-OP1030-201 power module or its analogs using PWM SOT23-6 microcircuits (R7731AGE).
MainBoard - the main board (motherboard) is a T.SP7050.13A module, using EN25F80, 24C32, TDA9885TS and others.
The TDQ-6K / GW125H tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: BT156GW01 V.A 61 Compatible model
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 344.232x193.536 mm
Shape Style: Wedge (PCBA Bent, Depth? 5.2mm)
Surface: Glare (Haze 0%), Hard coating (3H)
Brightness: 220 cd / m²
Contrast Ratio: 600: 1
Display Colors: 262K (6-bit), CIE1931 60%
Response Time: 8 (Tr + Td)
Frequency: 60Hz
Lamp Type: 9S6P WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 6-bit), 40 pins
Voltage: 3.3V
LED TV SUPRA STV-LC1625WL 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 2000: 1. Dynamic contrast ratio of 10,000: 1 is achieved by special control of the LEDs depending on the illuminance of the plot in the plot. LED display technology is used in the model’s display technology. You can watch broadcasts and movies and images in high quality HD at a resolution of 1366x768 pixels in 720p (HD Ready). The input high-frequency or video signal is decoded in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, 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, 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, 1360x768.
The power consumed by the TV in the operating mode from the network is 40 watts.
Overall dimensions: With stand 580x395x175 mm, Without stand 378x289x97 mm.
Attention! The SUPRA STV-LC1625WL LED TV panel B156HW02 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.
