Technical description and composition of the SUPRA STV-LC46990FLH TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC46990FLH
Chassis / Version: CV182H-E
Panel: TC460FPE5
T-CON: V460H1-CPE5
LED driver (backlight): integrated into PSU
Power Supply (PSU): BSF-P1420401A
MainBoard: CV182H-E
IC MainBoard: CPU MST6M182VGC-LF-Z1, Flash W25Q32BV
Tuner: CDT-3SP512-37
STV-LC46990FLH Specifications
SUPRA STV-LC46990FLH
General recommendations for TV LCD LED repair
SUPRA STV-LC46990FLH, like other TVs, it is advisable to start repairing by inspecting the external and internal elements and modules. From visible external changes in the state of components, it is often possible to determine the further direction of troubleshooting before taking the necessary measurements. Elements with visible damage, for example, capacitors swollen after electrolyte boiling, charred resistors in certain nodes of the circuit, as well as ring cracks in the solders, will help the master guess the causes and possible consequences of the malfunction.
If SUPRA STV-LC46990FLH does not turn on, none of the indicator lamps on the front panel will light up or blink, therefore, there is a very high probability of a malfunction of the BSF-P1420401A power supply module. In some cases, only the processor power supply regulator may be faulty. Diagnostics and repair of the common power supply should always begin with checking the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the mains rectifier, as well as the large electrolytic capacitor of the mains rectifier filter.
Mos-Fet switches used in switching power supplies (SMPS) rarely fail without reasons that must be looked for by checking other circuit elements. Breakdown is often caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or breakdown of resistors in stabilization circuits. The PWM controller microcircuit can also cause the breakdown of the power switch of the converter.
If, when SUPRA STV-LC46990FLH is turned on, there is no image, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the LED circuit of the TC460FPE5 panel backlight, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
It is often necessary to disassemble the panel to check the health of the LEDs, as well as the contact connections in the connectors and solders.
To check the LED strips for breakage 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.
On the CV182H-E 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).
Often the MB (SSB) board needs to be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - CPU MST6M182VGC-LF-Z1, Flash W25Q32BV and replace the failed chips with new ones. Some malfunctions may be associated with the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
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 CDT-3SP512-37 tuner.
We remind users again! Attempts to self-repair the SUPRA STV-LC46990FLH TV without proper qualifications and experience can lead to its complete non-repairability!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC46990FLH, Main: CV182H-E, Panel: TC460FPE5
The appearance of MainBoard TP.VST59.P83 is shown in the figure below:TP.VST59.P83
The TP.VST59.P83 motherboard is combined with a power supply module and is an independent device based on the TSUMV59Xxx multifunctional processor. Repair of such a board must begin with checking the power supply elements, as well as the operability of voltage converters and linear stabilizers required to provide power to certain processor nodes, in particular: 1.2V core power, DDR 1.8V built-in memory and Stand-by 3.3 standby mode node. V. The supply voltage of the LCD panel is 5V or 12V, depending on the type of panel used, it is necessary to check directly on the LVDS connector.
CV182H-E can be used in TVs:
FUSION FLTV-32F18 (Panel TC315FJE1), FUSION FLTV-32L22B (Panel MT3151A05-2), SUPRA STV-LC3225AWL (Panel TH315B041 R213E), SUPRA STV-LC3225AWL (Panel TB315B201), SUPRA STV-LC46990FLH (Panel TC460FPE5).
External view of the power supply
Main features of SUPRA STV-LC46990FLH device:
Installed matrix (LED panel) TC460FPE5.
Matrix control uses Timing Controller (T-CON) V460H1-CPE5.
A converter combined with a power supply is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC46990FLH TV is carried out by the BSF-P1420401A power module, or its analogs.
MainBoard - the main board (motherboard) is a CV182H-E module, using CPU MST6M182VGC-LF-Z1, Flash W25Q32BV and others.
The CDT-3SP512-37 tuner provides reception of television programs and tuning to channels.
LED TV SUPRA STV-LC46990FLH with LCD TC460FPE5, diagonal 46 "(117 cm) 16: 9. The required brightness of the screen of 400 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 120,000: 1 is achieved by a special control of LED operation depending on the illumination of the areas in the scene.This model uses an LED panel with an edge LED backlighting - Edge LED.The TV capabilities provide viewing of programs and films in high quality HD at a resolution of 1920x1080 pixels in graphics resolution at 1080p (Full HD). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, JPEG.
Speaker power of 16 W (2x8 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 x2, component, VGA, HDMI x4, 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, 1280x1024, 1360x768, 1920x1080. 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 180 watts.
Overall dimensions: 1057x673x255 mm.
TV weight: 18.5 kg.
Attention! The panel TC460FPE5 of the SUPRA STV-LC46990FLH 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 unrepairable.