Technical description and composition of the SAMSUNG UE32F6400AK TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32F6400AK UE32F6400
Chassis / Version: U85A / Ver. AS02
Panel: HF320CSA-B1
LED backlight: D2GE-320SC0-R3 (12,12,27) Direct LED
T-CON: 32T36-C06, T320HVN03.1 CTRL BD
LED driver (backlight): integrated into PSU; 42V 819mA, 83V 273mA
PWM LED driver: SLC2013M
MOSFET LED driver: KF9N25D
Power Supply (PSU): BN44-00620A L32X1QP_DSM
PWM Power: D2011K (Standby), ADP3110A, S3050 (PFC)
MOSFET Power: 13NM60N (PFC), 5R380CE
MainBoard: BN41-01958A BN94-06704D
IC MainBoard: CPU: SEMS30, SPI FLASH: W25Q40
Tuner: BN40-00262B GT2CX-3S / K3S
Control: bluetooth: BN96-25376A; WIFI: WIDT30Q BN59-01161A; IR: BN96-26401D
Technical Specifications UE32F6400
SAMSUNG UE32F6400AK
General repair guidelines for TV LCD LED
If the UE32F6400AK does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, the BN44-00620A L32X1QP-DSM power supply module is probably faulty in this case. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
If there is no image when you turn on the SAMSUNG UE32F6400AK, or it appears and immediately disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the HF320CSA-B1 panel, or in the LED node of the driver-converter of their power supply.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
If the motherboard BN41-01958A BN94-06704D 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 you can check the health of MB only by replacement.
In cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - CPU: SEMS30, SPI FLASH: W25Q40 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 conclusions with the board (it is diagnosed by heating).
If the TV works normally from external devices, but does not tune into television channels, the tuner BN40-00262B GT2CX-3S / K3S may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of repair of electronic equipment.
SCHEMATICS -------------> SAMSUNG UE32F6400, UE40F6400, UE46F6400, UE50F6400, UE55F6400, UE65F6400, UE75F6400 CHASSIS U85A
The appearance of the MainBoard BN41-01958A is shown in the figure below:BN41-01958A
BN41-01958A can be used in TVs:
SAMSUNG UE39F5500 UE39F5500AK (Panel HF390BGM-C1), SAMSUNG UE32F5300AK (Panel HF320BGA-B1), SAMSUNG UE32F6200 UE32F6200AK (Panel CY-HF320BGLV2V), SAMSUNG UE42F5500AK (Panel HF420BGA-B1), SAMSUNG UE32F4500AK (Panel HF32AGH-R1), SAMSUNG UE32F5500AK UE32F5500AW (Panel HF320BGA-B1), SAMSUNG UE40F6400 UE40F6400AK (Panel CY-HF400CSLV2V), SAMSUNG UE42F5300AK (Panel CY-HF420BGAV1V CY-HF460BGLV2V), SAMSUNG UE46F6400AK (Panel CY-HF460CSLV2V), SAMSUNG UE46F6540AB (Panel CY-GF460CSLV3V), SAMSUNG UE40F6540AB (Panel CY-GF400CSLV3V), SAMSUNG UE40F6650 UE40F6650AB (Panel CY-GF400CSLV1V), SAMSUNG UE32F6540 (Panel CY-HF320CSLV3V) , SAMSUNG UE46F5300 UE46F5300AK (Panel CY-HF460BGLV1V), SAMSUNG UE32F6800 UE32F6800AB (Panel CY-HF320CSLV1V).
PSU Advanced
The UE32F6400AK model uses a BN44-00620A power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, this is a boost converter based on the S3050 PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the SAMSUNG UE32F6400AK device:
The matrix (LED panel) HF320CSA-B1 is installed.
The matrix control uses the Timing Controller (T-CON) 32T36-C06.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the SLC2013M PWM controller. As power elements of the LED driver, keys of the KF9N25D type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32F6400AK TV are generated by the BN44-00620A power supply module or its analogs using D2011K (Standby), ADP3110A, S3050 (PFC) microcircuits and 13NM60N (PFC), 5R380CE type power switches.
MainBoard - the main board (motherboard) is a BN41-01958A module, using CPU chips: SEMS30, SPI FLASH: W25Q40 and others.
The tuner BN40-00262B GT2CX-3S / K3S provides the reception of television programs and tuning to channels.
