Technical description and composition of the SUPRA STV-LC3225DL TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC3225DL
Chassis / Version: CV206H-C-11
Panel: DTW015LSC02-A
MainBoard: CV206H-C-11
IC MainBoard: Flash 25L6405D
STV-LC3225DL Specifications
SUPRA STV-LC3225DL
General recommendations for TV LCD LED repair
Repair and diagnostics of any electronic device, in particular SUPRA STV-LC3225DL, it is advisable to begin with a careful external examination of the internal and external elements. According to some external signs of a change in the state of some elements, sometimes it becomes possible to make assumptions about the nature of the defect, as well as to determine the further direction of troubleshooting. In most cases, the repairman can guess about the causes of the defect and the possible consequences by the characteristic signs of typical defects in TVs, for example, the formed ring cracks in the soldering of the element terminals, swollen capacitors of the rectifier filter, charred resistors and other circuit elements.
If the STV-LC3225DL TV does not turn on, does not emit any sounds when turned on, as well as no indicators on the front panel are lit or blinking, there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some SUPRA models. It is advisable to start diagnostics 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. In the event that 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 a breakdown state in such situations.
As a rule, switches in switching power supplies (SMPS) are quite reliable and rarely fail without reasons that should be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM microcircuit is checked by replacing it with a known good one.
If, when the TV is turned on, the image appears and immediately disappears, or is absent initially when turned on, but there is sound and other functions work, there is a high probability of a malfunction of the LED driver (DTW015LSC02-A panel backlight LED power converter). In such cases, the common power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
To check the health of the LEDs, as well as the contact connections in the ruler circuit, the panel must be disassembled.
To identify an open circuit in the LED lines without disassembling the panel, a current source is required. It is impossible to open the junctions connected in series with a simple multimeter; a voltage of several tens of volts is required.
On the CV206H-C-11 motherboard, in case of a malfunction, you should first check the operability of all stabilizers or power converters of microcircuits and, if necessary, update the software (software).
In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - Flash 25L6405D, which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its pins with the board (indicated by warming up).
Attention to the owners! Attempts to repair the SUPRA STV-LC3225DL TV yourself are not recommended by the manufacturer and can lead to serious negative consequences!
FLASH SUPRA STV-LC3225DL, Main: CV206H-C-11, Panel: DTW015LSC02-A
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 "), 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-LC3225DL device:
Installed matrix (LED panel) DTW015LSC02-A.
The necessary supply voltages for all nodes of the SUPRA STV-LC3225DL TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a CV206H-C-11 module, using Flash 25L6405D chips and others.
SUPRA LED TV STV-LC3225DL with LCD DTW015LSC02-A, 32 "(81 cm) 16: 9 format diagonal. The required screen brightness of 450 cd / m² is provided by LED backlighting. Contrast - the ratio of maximum brightness to minimum is 3000: 1 Dynamic contrast ratio 10000: 1 is achieved by special control of the LEDs depending on the illumination of areas in the scene.This model uses an LED panel with an edge LED backlighting - Edge LED. It is possible to view broadcasts and films and images in high quality HD at resolution 1366x768 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 formation of a digital signal occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, JPEG.
The power of the acoustic system of sound 30 W (2x15 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, use the VGA (D-Sub 15) connector on the TV case, 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 120 watts.
Overall dimensions: 870x630x280 mm.
TV weight: 14.3 kg.
Attention! DTW015LSC02-A panel of SUPRA STV-LC3225DL 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.