Monday, 27 July 2020

REPAIR / SERVICING TV SUPRA STV-LC47660FL00

Technical description and composition of the SUPRA STV-LC47660FL00 TV, panel type and modules used. The composition of the modules.
SUPRA LED
Model: STV-LC47660FL00
Chassis / Version: V1L12 5800-A8M480-0P10
Panel: LC470EUN
LED backlight: EDGE LED
LED driver (backlight): KLS-E470RABHF12A
Power Supply (PSU): 5800-P42LLS-W010 168P-P42LLS-W0
MainBoard: 5800-A8M480-0P10
IC MainBoard: Flash EN25Q32B
Tuner: ET-9Z2E-CF106H
STV-LC47660FL00 Specifications
SUPRA STV-LC47660FL00
General recommendations for TV LCD LED repair
Any repair usually begins with an external inspection. 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. Swollen electrolytic or sintered capacitors, charred resistors, ring cracks in the soldering of the element terminals - all this can significantly help the master to determine the causes and consequences of the malfunctions in the TV.
In cases where the SUPRA STV-LC47660FL00 TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds when turned on, and no signs of operation at all, - most likely the power module is faulty or there is no power processor on the motherboard (typical defect of some SUPRA TV models). When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. If it breaks, the power elements of the transistors and diodes of the rectifier bridge should be checked for avalanche (thermal) breakdown.
It should be remembered that in the practice of repair, usually power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the reason that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dry electrolytic capacitors or broken resistors in the primary circuit, or the PWM controller microcircuit itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If, when SUPRA STV-LC47660FL00 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 LC470EUN 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.
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally a current source.
The 5800-A8M480-0P10 motherboard should be checked if there is no response to the remote control and function buttons, the standby indicator blinks or is on continuously. In such cases, if the converters or power regulators of the microcircuits are working, it may be necessary to update the software.
Often the MB (SSB) board needs to be replaced in case of complex malfunctions that are difficult to detect. When trying to repair it, you should check its elements - Flash EN25Q32B 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.
Before replacing the ET-9Z2E-CF106H tuner, if there is no tuning to the channels, you must first check the supply voltage at its terminals.
Remember! Attempts to repair the SUPRA STV-LC47660FL00 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!


FIRMWARE FOR SPI FLASH  ----------->   SUPRA STV-LC47660FL00, Main: 5800-A8M480-0P10, Panel: LC470EUN

 The appearance of the MainBoard 5800-A8M480-0P10 is shown in the figure below:
5800-A8M480-0P10
5800-A8M480-0P10 can be used in TVs:
AIWA 47LE61103 (Panel LC470EUN (SE)(F1)), AIWA 42LE6110 (Panel LC420EUN (SE)(M1)), AIWA 39LE6110 (Panel V390HJ1-P01), ERISSON 42LES66 (Panel LC420EUN SEM1), ERISSON 39LES66 (Panel CX275DLEDM), ERISSON 32LES66 (Panel REL320AH-U100 Rev.00), SUPRA STV-LC39660FL (Panel V390HJ1 rev.c1 SEL390V7-S00D ), SUPRA STV-LC32663FL (Panel T320HVN01.2), SUPRA STV-LC39663FL (Panel V390HJ1-P01), SUPRA STV-LC47660FL00 (Panel LC470EUN).
Main features of SUPRA STV-LC47660FL00 device:
The matrix (LED-panel) LC470EUN is installed.
The LED driver KLS-E470RABHF12A is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC47660FL00 TV is carried out by the 5800-P42LLS-W010 power module, or its analogs.
MainBoard - the main board (motherboard) is a 5800-A8M480-0P10 module, using Flash EN25Q32B chips and others.
Tuner ET-9Z2E-CF106H provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC470EUN-SER1
Type: a-Si TFT-LCD, Panel
Diagonal size: 47 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 1039.68x584.82 mm
Surface: Hard coating (3H), Reflection 2.0% (Max.)
Brightness: 300 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V.
LED TV SUPRA STV-LC47660FL00 with LCD display LC470EUN, diagonal size 47 "(119 cm) 16: 9. The required screen brightness of 360 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 120,000: 1 is achieved by special LED control depending on the illumination of the areas in the scene.This model uses an LED-panel with an edge arrangement of backlight LEDs - Edge LED.
There is support for 3D images, 2D to 3D conversion. The capabilities of the TV provide for viewing programs and films in high quality HD at a resolution of 1920x1080 pixels in graphic decomposition at the standard 1080p (Full HD). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping takes place in the 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards. Supported media file formats: MP3, MKV, JPEG.
Speaker power 20 W (2x10 W) is provided by two speakers. Uses NICAM stereo signal processing system and Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI x3, USB x2. 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.
Overall dimensions: 1174x760x166 mm.
TV weight: 21.1 kg.
Attention! The LC470EUN panel of the SUPRA STV-LC47660FL00 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.