Technical description and composition of the SUPRA STV-LC39480F TV, panel type and modules used. The composition of the modules.SUPRA
Model: STV-LC39480F
Chassis / Version: T.MSD306.32A
Panel: V390HJ1-L02 REV. C1
T-CON: V390HJ1-XC01; CM2801A, CM501, P203EVG, 428RP
Inverter (backlight): I390HJ1-08A
PWM Inverter: SG3525AN
MOSFET Inverter: P6NK90
Power Supply (PSU): MIP390CF REV: 1.0
PWM Power: MB95F204K, NCP1606B (PFC)
MOSFET Power: K6A60D, MDF5N50F, K12A50D
MainBoard: T.MSD306.32A 11202 (53AW-47D306-0110)
IC MainBoard: 25Q32, NT5TU32M16DG-AC, AIC2857F, R2A15122FR
STV-LC39480F Specifications
SUPRA STV-LC39480F
General recommendations for TV LCD repair
Repair of electronic equipment usually begins with its external examination and diagnosis of a malfunction. In this case, you should inspect all the internal components of the SUPRA STV-LC39480F TV, as well as the external elements of the case. 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. If charred resistors, swollen electrolytic or sintered capacitors, ring cracks in the soldering of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction, as well as to check the connected elements and assemblies.
If the STV-LC39480F TV does not turn on, does not emit any sounds when turned on, as well as no indicators on the front panel light or blink, there is a high probability of a malfunction in the power module. In some cases, there may be a malfunction only in the standby power supply. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the secondary rectifier filter and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes and transistors in the primary circuit.
It should be borne in mind that in the practice of repair, it is extremely rare for key transistors in switching power supplies (SMPS) to fail without reasons that should be looked for by checking other components, for example, a key breakdown can provoke faulty elements of damper circuits, or dried electrolytic capacitors or broken primary resistors power supply circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM regulator microcircuit are subject to verification, which it is desirable to check by replacement.
If the SUPRA STV-LC39480F TV has no picture, but there is sound, you should make sure that the backlight power converter (inverter) is working. It is also necessary to check the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overestimated ESR. When disabling protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all standard protection circuits must be restored.
If the motherboard T.MSD306.32A 11202 (53AW-47D306-0110) is faulty, first of all it is necessary to check all the linear stabilizers and power converters of its chips, and also, if necessary, update the software (software). Sometimes it is possible to check the health of the MB only by replacing it. Complex repair of MB (SSB) is possible only in a service center with the necessary equipment. Checking or replacing elements 25Q32, NT5TU32M16DG-AC, AIC2857F, R2A15122FR requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
Remember! Attempts to repair the SUPRA STV-LC39480F 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-LC39480F, Main T.MSD306.32A 11202, Panel V390HJ1-L01
The appearance of the MainBoard T.MSD306.32A is shown in the figure below:T.MSD306.32A
Additionally by PSU
The MIP390CF power module uses a Power Factor Correction (PFC) circuit to eliminate multiple AC harmonics introduced by the device into the mains. The PFC node is a step-up converter based on the NCP1606B PWM regulator, which evenly within a period of 50 Hz distributes high-frequency pulses of the charging current of the electrolytic capacitor of the mains rectifier filter. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the mains frequency), but by the elements of the converter. As a result, a change in the pulse amplitude (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The serviceability of the PFC unit is indicated by the presence of an increased voltage (about + 380V) in operating mode on the capacitor of the mains filter.
Main features of SUPRA STV-LC39480F device:
Installed matrix (LCD panel) V390HJ1-L02 REV. C1.
Matrix control uses Timing Controller (T-CON) V390HJ1-XC01 ;.
To power the backlight lamps, the I390HJ1-08A inverter is used, controlled by the SG3525AN PWM controller. The keys of the P6NK90 type are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the SUPRA STV-LC39480F TV is carried out by the MIP390CF power module, or its analogs using the MB95F204K, NCP1606B (PFC) microcircuits and power switches such as K6A60D, MDF5N50F, K12A50D.
MainBoard - the main board (motherboard) is a T.MSD306.32A module, using 25Q32, NT5TU32M16DG-AC, AIC2857F, R2A15122FR and others.
Information from an alternative source:
SUPRA STV-LC39480F Version V1L08
Panel type (matrix): V390HJ1-L02
Motherboard: T.MSD306.32 11202 (53AW-47D306-0110), 25Q32, NT5TU32M16DG-AC, AIC2857F, R2A15122FR, 18273
T-con: V390HJ1-XC01 non-removable, CM2801A, CM501, P203EVG, 428RP, Backlight Inverter Board: I390HJ1-08A
PSU & Invertor: MIP390CF REV: 1.0, SG3525AN, MB95F204K, NCP1606B, BA2H1C X3, AS358A, K6A60D, MDF5N50F X2, K12A50D
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V390HJ1-L02
Type: a-Si TFT-LCD, Panel
Diagonal size: 39 inch
Resolution: 1920x1080, FHD
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 853.92x480.33 mm
Surface: Antiglare (Haze 3.5%), Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 68%
Response Time: 8.5 (G to G)
Frequency: 60Hz
Lamp Type: 8 pcs CCFL Embedded (Balance board)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
SUPRA LED TV STV-LC39480F with LCD V390HJ1-L02, 39 "(99 cm) 16: 9. 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, MPEG4, MKV, JPEG.
The power of the speaker system is 18 W (2x9 W), 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, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
Overall dimensions: 1005x690x225 mm.
TV weight: 15.2 kg.
Attention! Panel V390HJ1-L02 REV. C1 LED TV SUPRA STV-LC39480F 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.