Technical description and composition of the SUPRA STV-LC2625DL TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC2625DL
Chassis / Version: CV206H-C-11
Panel: V260H1-L03
Power Supply (PSU): E141940.CEM-1 ZD-95 (G) F
MainBoard: CV206H-C-11
IC MainBoard: Flash 25L6405
Tuner: DT70WI-3R-E
STV-LC2625DL Specifications
SUPRA STV-LC2625DL
General recommendations for TV LCD LED repair
SUPRA STV-LC2625DL TV, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Sometimes, based on the visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements begin. In some cases, defective elements are visible to the naked eye, for example, charred resistors or swollen sintered capacitors, or electrolytic ones in rectifier filters. The formed ring cracks in the soldering of the terminals of transformers or heating circuit elements are also frequent sources of many malfunctions with a variety of external manifestations.
If the power supply module E141940.CEM-1 ZD-95 (G) F is defective, the external manifestations may be different, for example, SUPRA STV-LC2625DL does not turn on at all and there is no indication of the control lamps on the front panel. With the same symptoms, the regulator (converter) of the control processor power supply may be faulty. The first step is to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse in the power supply is broken, in most cases a breakdown of the power switch (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. You should also check the diodes of the rectifier bridge and the electrolytic capacitor of the mains rectifier filter.
In most cases, breakdowns of keys in switching power supplies (SMPS) do not occur without 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 broken resistors or punctured semiconductor elements in the stabilization circuits. Possible defect of the PWM chip from the manufacturer.
If the SUPRA STV-LC2625DL TV does not have a picture, but there is sound, a malfunction is likely in the LED backlight circuits of the V260H1-L03 panel. It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overestimated ESR.
To check the health of the LEDs and contact connections in their power supply circuit, it is necessary to disassemble the panel.
It is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally a current source.
If the CV206H-C-11 motherboard is faulty, first of all, you need to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes it is possible to check the health of the MB only by replacing it.
In cases of complex MB (SSB) repairs and with the necessary skills and equipment, it may sometimes be necessary to replace its Flash 25L6405 chips and other possible faulty components. Malfunctions associated with the use of BGA soldering technologies are usually easily diagnosed by the warm-up method.
If there is no reception of TV channels, but the TV is working properly from external devices, first of all, you need to check the supply voltage of the DT70WI-3R-E tuner.
Owners and users of the SUPRA STV-LC2625DL TV need to 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-LC2625DL, Main: CV206H-C-11, Panel: V260H1-L03
The appearance of the MainBoard CV206H-C-11 is shown in the figure below:CV206H-C-11
CV206H-C-11 can be used in TVs:
SUPRA STV-LC3245LF (Panel 32 inches), SUPRA STV-LC2625LD (Panel V260B1-L31 Rev. 223 L0348), SUPRA STV-LC2625DL (Panel V260H1-L03), SUPRA STV-LC3225DL (Panel DTW015LSC02-A).
Main features of SUPRA STV-LC2625DL device:
Installed matrix (LED panel) V260H1-L03.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC2625DL TV is carried out by the E141940.CEM-1 power module, or its analogs.
MainBoard - the main board (motherboard) is a CV206H-C-11 module, using Flash 25L6405 chips and others.
The DT70WI-3R-E tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CMO
Model: V260H1-L03
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 576x324 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.4 / 3.6 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
SUPRA LED TV STV-LC2625DL with LCD V260H1-L03, diagonal size 26 "(66 cm) 16: 9 format. 1000: 1 Dynamic contrast ratio 4000: 1 is achieved by special control of the LEDs depending on the illumination of areas in the scene. The display technology of the model uses LED LED backlighting. The TV's capabilities provide for viewing programs and films in high quality HD at a resolution of 1920x1080 pixels in graphic resolution 1080p (Full HD). Input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, JPEG.
Speaker power 10 W (2x5 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, component, SCART x2, RGB, VGA, HDMI x3, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768. The digital tuner is capable of receiving TV channels in DVB-T MPEG4 standards.
The power consumed by the TV in operating mode from the network is 60 watts.
Overall dimensions: 645x458x180 mm.
TV weight: 7.1 kg.
Attention! The panel V260H1-L03 of the SUPRA STV-LC2625DL LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.