Technical description and composition of the TV SUPRA STV-LC2225WL, type of panel and applicable modules. The composition of the modules.SUPRA LED
Model: STV-LC2225WL
Chassis / Version: V2J10 CVMV26L-B-20
Panel: MT215DW01 V.1 // TC216F101 M216H1-L01
LED backlight: MT215DW01 V.3 L1-A 200008 38-10 and MT215DW01 V.3 L2-A 200008 39-00
LED driver (backlight): integrated into PSU
Power Supply (PSU): MP113-X
MainBoard: CVMV26L-B-20
IC MainBoard: TSUMV26KE-LF, TDA1517P, 25F40, 24C32
Tuner: F21WT-3BAR-E
Technical Specifications STV-LC2225WL
SUPRA STV-LC2225WL
General repair guidelines for TV LCD LED
TV SUPRA STV-LC2225WL, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal 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. 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 the case when the STV-LC2225WL does not turn on, does not respond to the remote control and buttons on the front panel, does not blink bulbs and does not show any signs of operability, the power supply module is probably defective in this case. If it is serviceable with such manifestations, it is necessary to check the power supply stabilizer (converter) of the processor on the motherboard. It is advisable to start the troubleshooting of the power supply module by checking the condition of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
In cases where the SUPRA STV-LC2225WL 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 (converter for powering the backlight LEDs of the TC 216F101 M216H1-L01 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 in the absence of backlighting, disassembling the panel is required. It is necessary to check the health of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
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 CVMV26L-B-20 motherboard, it is necessary to check the performance 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 complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its chips TSUMV26KE-LF, TDA1517P, 25F40, 24C32 and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If the TV works normally from external devices, but does not tune into television channels, the F21WT-3BAR-E tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals, as well as the power supply of varicaps (30-33V).
Once again, remind users! Attempts to self-repair a SUPRA STV-LC2225WL TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC2225WL V2J10 CVMV26L-B-20, Main: CVMV26L-B-20, Panel: TC216F101 M216H1-L01
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).
Main features of the SUPRA STV-LC2225WL device:
Installed matrix (LED panel) MT215DW01 V.1 or TC216F101 M216H1-L01.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC2225WL TV is carried out by the MP113-X power supply module, or its analogs.
MainBoard - the main board (motherboard) is a CVMV26L-B-20 module, using TSUMV26KE-LF, TDA1517P, 25F40, 24C32 and other chips.
The F21WT-3BAR-E tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: INNOLUX
Model: MT215DW01 V.1
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 70%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
LED TV SUPRA STV-LC2225WL with LCD display MT215DW01, diagonal size 22 "(56 cm) 16: 9 format. The required brightness of the screen 300 cd / m² is provided by LED backlight LED. Dynamic contrast 4000: 1 is achieved by special control of the LEDs depending on the illuminated areas in the plot. The model’s display manufacturing technology uses LED LED backlighting. The TV’s capabilities include viewing broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the 1080p standard (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 the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
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, RGB, VGA, HDMI. 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 60 watts.
Overall dimensions: 535x405x200 mm.
The mass of the TV: 5.95 kg.
Attention! The MT215DW01 V.1 panel of a SUPRA STV-LC2225WL 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.