Technical description and composition of the TV SUPRA STV-LC18250FL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC18250FL
Chassis / Version: T.MS18VG.62B 11505
Panel: B173RW01 V.3
MainBoard: T.MS18VG.62B 11505
IC MainBoard: Flash GD25Q32SIP
Tuner: CDT-3SP512-36
Technical Specifications STV-LC18250WL
SUPRA STV-LC18250FL
General repair guidelines for TV LCD LED
It is advisable to start repairing electronic devices, including the SUPRA STV-LC18250FL TV, with an external examination of its external and internal elements. 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. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
In cases when the SUPRA STV-LC18250FL TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel 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). In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
In cases where the SUPRA STV-LC18250FL TV has lost its image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (a converter for powering the B173RW01 V.3 backlight LEDs). 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.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
If the motherboard T.MS18VG.62B 11505 is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - Flash GD25Q32SIP with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
It should be remembered! Attempts to repair the SUPRA STV-LC18250FL TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC18250FL, Main: T.MS18VG.62B 11505, Panel: B173RW01 V.3
The appearance of MainBoard T.MS18VG.62B is shown in the figure below:T.MS18VG.62B
T.MS18VG.62B can be used in TVs:
BBK LEM2483F (Panel LG LC 230EUE(TD)(A1)), BBK LEM1983 (Panel LM185WH2 (TL)(A1)), DNS M24AM2 (Panel M236HGE-P02), DNS E16A90 (Panel LP156WH4 (TL)(A1)), ERISSON 23LEN60 (Panel LM230WF5), ERISSON 22LEN60 (Panel LS215AFTNO), ERISSON 24LEN60 (Panel LM230WF5 ), ERISSON 15LEN60 (Panel B156XW02 V.2), IZUMI TLE22F750B (Panel M215HGE-L10), RUBIN RB-19S2U (Panel V185B1-PE1 A01 REV 1.0), SUPRA STV-LC18250FL (Panel B173RW01 V.3).
Main features of the SUPRA STV-LC18250FL device:
Installed matrix (LED-panel) B173RW01 V.3.
The required supply voltage for all nodes of the TV SUPRA STV-LC18250FL provides a switching power supply.
MainBoard - the main board (motherboard) is a T.MS18VG.62B module, using Flash GD25Q32SIP chips and others.
The tuner CDT-3SP512-36 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: B173RW01 V3
Type: a-Si TFT-LCD, Panel
Diagonal size: 17.3 inch
Resolution: 1600x900, HD +
Display Mode: TN, Normally White, Transmissive
Active Area: 382.08x214.92 mm
Shape Style: Wedge (PCBA Bent, Depth? 5.2mm)
Surface: Glare (Haze 0%)
Brightness: 220 cd / m²
Contrast Ratio: 500: 1
Display Colors: 262K (6-bit), CIE1931 60%
Response Time: 2/6 (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.