Technical description and composition of the SAMSUNG UE40H5203AK TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40H5203AK UE40H5203
Chassis / Version: IS01
Panel: V400HJ6-PE1 CY-HH040BGNV1V
LED backlight: 2014SVS_40_MEGA_3228_13LED, 2014SVS_40_MEGA_3228_12LED
T-CON: V390HJ5-XCPE1 + V390HJ1-XRME1
LED driver (backlight): integrated into PSU; 148V 350mA
PWM LED driver: 8pin
MOSFET LED driver: MDD5N40
Power Supply (PSU): BN44-00754A L40G0B_ESM PSLF870G06A
PWM Power: S3330 = FAN6755
MOSFET Power: 60R580P, MDD5N40
MainBoard: BN41-02253B BN94-07800M
IC MainBoard: EEPROM: 24C256, DRAM: K4B2G1646Q; DRAM: K4B2G1646Q, SPI Flash: 25Q40
Tuner: BN40-00287A
Technical Specifications UE40H5203
SAMSUNG UE40H5203AK
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE40H5203AK does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
In such cases, the fault should be sought first in the BN44-00754A power supply module. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches (60R580P, MDD5N40) and rectifier diodes for a possible partial or complete breakdown.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) S3330 = FAN6755, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
Failure in most such cases is detected in the nodes and backlight elements of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It should be remembered that it is not possible to determine the break in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a malfunction, the zener diode PN junction will either be cut off or broken into short-circuit.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights up constantly or blinks.
Repair or diagnostics of the BN41-02253B motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update or replace the software (software). In cases of attempts to repair the MB board (SSB), it is necessary to check the serviceability of its elements - EEPROM: 24C256, DRAM: K4B2G1646Q; DRAM: K4B2G1646Q, SPI Flash: 25Q40 which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before replacing the tuner BN40-00287A, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Once again, remind users! Attempts to self-repair a SAMSUNG UE40H5203AK TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
The appearance of the MainBoard BN41-02253B is shown in the figure below:
BN41-02253B
BN41-02253B can be used in TVs:
SAMSUNG UE48H5203AK UE48H5203 (Panel CY-HH048BGLV1V), SAMSUNG UE40H5203AK UE40H5203 (Panel V400HJ6-PE1 CY-HH040BGNV1V).
The appearance of the power supply
Main features of the SAMSUNG UE40H5203AK device:
Installed matrix (LED panel) V400HJ6-PE1 CY-HH040BGNV1V.
The matrix control uses the Timing Controller (T-CON) V390HJ5-XCPE1.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by an 8pin PWM controller. As power elements of the LED driver, keys of the MDD5N40 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40H5203AK TV are generated by the BN44-00754A power supply module or its analogs using S3330 = FAN6755 microchips and power switches of the 60R580P, MDD5N40 type.
MainBoard - the main board (motherboard) is a BN41-02253B module, using EEPROM chips: 24C256, DRAM: K4B2G1646Q; DRAM: K4B2G1646Q, SPI Flash: 25Q40 and others.
The tuner BN40-00287A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: INNOLUX
Model: V400HJ6-PE1 Rev. C2
Type: a-Si TFT-LCD, CELL
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: MVA, Normally Black, Transmissive
Active Area: 878.112x485.352 mm
Surface: Antiglare (Haze 1%)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.0% (with Polarizer)
Contrast Ratio: 5000: 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
