Technical description and composition of the TV SUPRA STV-LC2485FL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC2485FL
Chassis / Version: V3L03
Panel: V236H1-LE4
LED backlight: 5800-P24DTX-W000 168P-P24DTX-W0
T-CON: V236H1-LE5
LED driver (backlight): 5800-P24DTX-W000 168P-P24DTX-W0
Power Supply (PSU): 5800-P24TWB-W010 (168P-P24TWB-HCW0 11C134M)
PWM Power: TEA1733, OB2263
MOSFET Power: P4NK60, 2SK2761
MainBoard: 5800-A8M260-0020 201100915 V0.34
IC MainBoard: CPU: MST6E181VS-LF-Z1, Spi Flash: MX25L3206E
Tuner: HFT2-8F / 115CW
Technical Specifications STV-LC2485FL
SUPRA STV-LC2485FL
General repair guidelines for TV LCD LED
It is advisable to start repairing a SUPRA STV-LC2485FL TV with a careful external inspection of both internal and external elements. Often, based on certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain circuit elements even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
In cases when the SUPRA STV-LC2485FL 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 SUPRA TVs). When diagnosing and repairing the power supply, after replacing the swollen capacitors of the filters of the secondary rectifiers (if any), you must first check the mains fuse. When it is broken, the power elements of the transistors and diodes of the rectifier bridge should be checked for avalanche (thermal) breakdown.
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 there is no image when you turn on the SUPRA STV-LC2485FL, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the 1080p Full HD panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
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.
The motherboard 5800-A8M260-0020 201100915 V0.34 should be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up constantly. 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 CPU elements: MST6E181VS-LF-Z1, Spi Flash: MX25L3206E. BGA chip malfunctions are usually easy to detect by warming up.
The malfunction of the HFT2-8F / 115CW tuner is established after checking the software and all the supply voltages at its terminals.
Once again, remind users! Attempts to independently repair a SUPRA STV-LC2485FL TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC2485FL V3L03, Main: 5800-A8M260-0020 201100915 V0.34 , Panel: 1080p Full HD
The appearance of the MainBoard 5800-A8M260-0020 is shown in the figure below:5800-A8M260-0020
5800-A8M260-0020 can be used in TVs:
ERISSON 32LES61 (Panel V320BJ2-P01 REV.C1), ERISSON 19LES62 (Panel SEL185V3-SD0X 720p HD), ERISSON 32LES62 (Panel 720p), SUPRA STV-LC1985WL (Panel V185B1-LE1), SUPRA STV-LC2485FL (Panel V236H1-LE4).
The appearance of the power supply
Main features of the SUPRA STV-LC2485FL device:
Installed matrix (LED-panel) V236H1-LE4.
The matrix control uses the Timing Controller (T-CON) V236H1-LE5.
The LED driver 5800-P24DTX-W000 is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the TV SUPRA STV-LC2485FL are generated by the power supply module 5800-P24TWB-W010, or its analogs using TEA1733, OB2263 microcircuits and power switches of the type P4NK60, 2SK2761.
MainBoard - the main board (motherboard) is a 5800-A8M260-0020 module, using CPU chips: MST6E181VS-LF-Z1, Spi Flash: MX25L3206E and others.
The HFT2-8F / 115CW tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V236H1-LE4
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.6 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 521.28x293.22 mm
Surface: Antiglare (Haze 25%)
Brightness: 280 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 9S8P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
LED TV SUPRA STV-LC2485FL with LCD V236H1-LE4, diagonal size 24 "(61 cm) 16: 9 format. The required brightness of the screen 300 cd / m² is provided by LED backlight LED. Contrast - the ratio of maximum brightness to minimum is 1000: 1. Dynamic contrast ratio of 3500: 1 is achieved by special control of the LEDs depending on the illumination of sections in the plot.This model uses an LED panel with the end-face arrangement of the backlight LEDs - Edge LED.The TV features include watching programs and movies in high quality HD at Resolution 1920x1080 pixels in graphic decomposition according to the standard 1080p (Full HD). 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 media file formats: MP3, WMA, MPEG4, 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 x2, audio x3, component, 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. The digital tuner is capable of receiving television channels in DVB-T MPEG4 standards.
The power consumed by the TV in the operating mode from the network is 55 watts.
Overall dimensions: 647x512x252 mm.
Mass of the TV: 6.5 kg.
Attention! The V236H1-LE4 panel of a SUPRA STV-LC2485FL 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.