Technical description and composition of the TV SUPRA STV-LC2425WL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC2425WL
Chassis / Version: V4L01
Panel: M240HW02 V.1
LED driver (backlight): HQ-LED31C3
PWM LED driver: OB3362VP (28 pin MP3389)
MOSFET LED driver: ME15N10-G
Power Supply (PSU): HTX-OP1048-401
PWM Power: LD7575PS (PWM flyback)
MOSFET Power: 5N60C
MainBoard: CV181L-A
IC MainBoard: MST6E181VS-LF-Z1, W25Q32BVSIG, NX5DV330, MP1423DN, MP1482DS, YD1517P
Tuner: AFT 7 / W110G
Control: RC3b
SUPRA LED
Model: STV-LC2425WL STV-LC2225WL
Chassis / Version: CVMV26L-B-20
Panel: M236MWF1, M216H1-L01 // MT215DW01 V.1
LED driver (backlight): DP-LED-22013 REV1.1H / DATA-LED-22013DH
PWM LED driver: DP8600A
MOSFET LED driver: 4419
Power Supply (PSU): KPA-060F Adapter 12V, 5A
MainBoard: CVMV26L-B-20
IC MainBoard: TSUMV26KE-LF, 24C32, 25F40, MP1423DN, 74HC4052D, K24C02C, TDA1517P,
Tuner: F21WT-3BAR-E TCL100509533
Technical Specifications STV-LC2425WL
SUPRA STV-LC2425WL
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular SUPRA STV-LC2425WL STV-LC2225WL, it is advisable to start with a careful external examination of internal and external elements. Visible damage to elements can sometimes indicate the direction of the search for a defect even before the necessary measurements are taken. Electrolytic capacitors of filters with a swollen body, as well as ring cracks or a layer of coal on burned-out resistors formed in the soldered terminals of the heating elements, sometimes tell the repairman the causes of the malfunction and possible consequences.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the adapter module KPA-060F, 12V, 5A is faulty and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, which is typical for certain SUPRA models. 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.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip may also cause a breakdown of the power switch of the converter.
If the SUPRA STV-LC2425WL does not have an image, but there is sound and the TV is controlled from the remote control, a malfunction in the backlight circuits of the M236MWF1, M216H1-L01 panel is likely. 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.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
It is impossible to detect a break in the line of LEDs without disassembling the panel with a simple multimeter. LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
Diagnosis and repair of the CVMV26L-B-20 motherboard is carried out by checking the performance of the stabilizers or power converters of the module chips. In some cases, a software update is required.
In some cases, it is necessary to check or replace (if necessary) the elements of the MB board (SSB) - TSUMV26KE-LF, 24C32, 25F40, MP1423DN, 74HC4052D, K24C02C, TDA1517P,. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If there is no reception of television channels, but the TV works properly from external devices, first of all it is necessary to check the voltage of the varicaps of the tuner F21WT-3BAR-E TCL100509533, which is usually within 30-33V, as well as other supply voltages at the terminals of the tuner.
Owners and users of the SUPRA STV-LC2425WL TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> Supra STV-LC2425WL Chassis: CVMV26L-B-20
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> SUPRA STV-LC2222WD. Main CVMV26L-A-20
The appearance of the MainBoard CVMV26L-B-20 is shown in the figure below:CVMV26L-B-20
CVMV26L-B-20 can be used in TVs:
ERISSON 19LEJ02 (Panel LM185WH2 (TL)(A1)), ERISSON 19LEJ10 (Panel 720p HD 1366x768), FUSION FLTV-15W7 (Panel LTN156AT05), HYUNDAI H-LEDVD24V2 (Panel M236MWF1), HYUNDAI H-LEDVD22V2 (Panel M215H1-L01), SUPRA STV-LC2225WL (Panel MT215DW01 V.1), SUPRA STV-LC2425WL STV-LC2225WL (Panel M236MWF1 M216H1-L01), SUPRA STV-LC1925WL (Panel MT185GW01 V.1), SUPRA STV-LC1925W (Panel MT185GW01 V.1), SUPRA STV-LC22390FD (Panel HM215WU1-300), SUPRA STV-LC2244FL (Panel MT215DW02 V.0).
The appearance of the power supply
Main features of the SUPRA STV-LC2425WL device:
Installed matrix (LED-panel) M236MWF1, M216H1-L01 or MT215DW01 V.1.
The LED driver DP-LED-22013 is used to power the backlight LEDs, it is controlled by the DP8600A PWM controller. As power elements of the LED driver, keys of type 4419 are used.
To power all the internal components of the SUPRA STV-LC2425WL TV, an external source of the KPA-060F Adapter 12V, 5A type is used.
MainBoard - the main board (motherboard) is a CVMV26L-B-20 module, using TSUMV26KE-LF, 24C32, 25F40, MP1423DN, 74HC4052D, K24C02C, TDA1517P, and others microcircuits.
Tuner F21WT-3BAR-E TCL100509533 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: IVO
Model: M236MWF1 R0
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, Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
SUPRA STV-LC2425WL LED TV with M236MWF1 LCD, 24 "(61 cm) diagonal size of 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Contrast - the ratio of maximum brightness to minimum is 1000: 1. Dynamic contrast ratio of 20,000: 1 is achieved by special control of the LEDs depending on the illuminance of the plot in the plot. The model’s display technology uses LED LED backlighting. The TV’s capabilities include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in standard graphic format 1080p (Full HD). 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, WMA, 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.
The power consumed by the TV in the operating mode from the network is 60 watts.
Overall dimensions: With a support of 580x395x175 mm, Without a support of 580x360x42 mm.
Mass of the TV: 3.7 kg.
Attention! The M236MWF1, M216H1-L01 panel of the SUPRA STV-LC2425WL 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.
