Technical description and composition of the SUPRA STV-LC39520FL TV, panel type and modules used. The composition of the modules.SUPRA LED
Model: STV-LC39520FL
Chassis / Version: T.VST59.A5
Panel: V390HJ1-P02 HK390LEDM-CH06H
T-CON: V390HJ1-XC01
LED driver (backlight): integrated into PSU
PWM LED driver: OB3350CP
MOSFET LED driver: KF7N05
Power Supply (PSU): LK-PL390101E // HKL-320201 H03
PWM Power: LD7537, GR8876A (PWM flyback LD7575)
MOSFET Power: ME15N10-G
MainBoard: T.MS18VG.72 T.VST59.A5
IC MainBoard: CPU: TSUMV59XE, FLASH: 25Q32BVS
Tuner: CDT-3NP5I1-10
Control: IR: 6003120090
STV-LC39520FL Specifications
SUPRA STV-LC39520FL
General recommendations for TV LCD LED repair
SUPRA STV-LC39520FL TV, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for the repairman can be a significant clue in assumptions about the causes and consequences of a malfunction.
If the TV does not turn on, none of the indicators on its front panel are on or blinking. Also, if the TV does not respond to the remote control and buttons, does not emit any sounds and any signs of operability when turned on, there is a certain probability that the LK-PL390101E power supply module is faulty and needs repair. Sometimes a problem with similar manifestations can occur only in the absence of processor power, which is typical for certain SUPRA models. 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.
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 SUPRA STV-LC39520FL has no picture, but there is sound and the TV is controlled from the remote control, a malfunction in the 1080p Full HD, 1920x1080 panel backlight circuits is likely. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when the TV is turned on, an image appears and immediately disappears. First of all, you need to make sure that the electrolytic capacitors of the rectifier filter supplying the LED driver are in good working order, and check the LEDs by connecting those that are known to be working for diagnostics.
To check the health of the LEDs and contact connections in their power supply circuit, it is necessary to disassemble the panel.
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.
Repair of the motherboard T.MS18VG.72 T.VST59.A5 must begin with diagnostics and testing of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - Flash 25Q32, 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).
Remember! Attempts to repair the SUPRA STV-LC39520FL 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!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> SUPRA STV-LC39520FL, Main: T.MS18VG.72 T.VST59.A5
The appearance of the MainBoard T.VST59.A5 is shown in the figure below:T.VST59.A5
T.MS18VG.72 can be used in TVs:
SUPRA STV-LC32800AWL (Panel HV320WX2-201 (HK315LEDM-BHA4H)), SUPRA STV-LC32520WL (Panel T320XVN02 001 HK315WLEDM-AHJ8H), SUPRA STV-LC32790WL (Panel HK315LEDM-BH81H(HV320WX2-261)), SUPRA STV-LC46500FL (Panel V460HJ1-PE1), SUPRA STV-LC32510WL (Panel 720p HD 1366x768), SUPRA STV-LC39520FL (Panel V390HJ1-P02 HK390LEDM-CH06H), SUPRA STV-LC32K800WL (Panel HV320WX2-201), SUPRA STV-LC42790FL (Panel HK420LEDM-AH17H), SUPRA STV-LC32K790WL (Panel HK315LEDM), SUPRA STV-LC32520AWL (Panel 720p HD 1366x768), SUPRA STV-LC42K790FL (Panel 1080p Full HD 1920x1080), SUPRA STV-LC32800WL (Panel HK315WLEDM-BHA4A).
Main features of SUPRA STV-LC39520FL device:
Installed matrix (LED panel) V390HJ1-P02 HK390LEDM-CH06H.
Matrix control uses Timing Controller (T-CON) V390HJ1-XC01.
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the OB3350CP PWM controller. KF7N05 keys are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC39520FL TV is carried out by the LK-PL390101E power module, or its analogs using LD7537, GR8876A microcircuits (PWM flyback LD7575) and ME15N10-G power switches.
MainBoard - the main board (motherboard) is a T.MS18VG.72 module, using CPU chips: TSUMV59XE, FLASH: 25Q32BVS and others.
The CDT-3NP5I1-10 tuner provides reception of television programs and tuning to channels.
Information from an alternative source:
SUPRA STV-LC39520FL Version V2N02
Panel type (matrix): V390HJ1-P02
Motherboard: CV59SH-J (Sticker 3CJ2782A), Tuner: CDT-3NP5I2-10
T-con: V390HJ1-XC01 - Not removable
PSU: HKL-320201 H03
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V390HJ1-P02
Type: a-Si TFT-LCD, CELL
Diagonal size: 39 inch
Resolution: 1920x1080, FHD
Display Mode: MVA, Normally Black, Transmissive
Active Area: 853.92x480.33 mm
Surface: Antiglare (Haze 3.5%), Hard coating (3H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 5.8% (with Polarizer)
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit)
Response Time: 8.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
SUPRA LED TV STV-LC39520FL with LCD V390HJ1-P02, diagonal 39 "(99 cm) in 16: 9 format. The required screen brightness of 400 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 100,000: 1 is achieved by special control operation of LEDs depending on the illumination of areas in the scene.This model uses an LED-panel with an edge arrangement of backlighting LEDs - Edge LED.The TV capabilities provide viewing of broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphic resolution in the standard 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 the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MKV, JPEG.
Speaker power 12 W (2x6 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 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, 1280x1024, 1360x768.
The power consumed by the TV in operating mode from the network is 90 watts.
Overall dimensions: 889x592x227 mm.
TV weight: 8.7 kg.
Attention! Panel V390HJ1-P02 HK390LEDM-CH06H SUPRA LED TV STV-LC39520FL 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