Technical description and composition of the SAMSUNG UE55F6400AK TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE55F6400AK UE55F6400
Chassis / Version: U85A / WU09
Panel: CY-HF550CSLV1V // CY-HF400CSLV3V
LED backlight: D2GE-550SCA-R3, D2GE-550SCB-R3
T-CON: LSF550HJ012 BN41-01939C
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00625C L55X1QV_DSM
MainBoard: BN41-01958B BN94-07195N
IC MainBoard: SEMS30, WT61P807, 24C256, 25Q40, K4B2G1646E, KLM4G1FE3B,
Tuner: BN40-00262B
Control: WIFI: WIDT30Q BN59-01161A
Technical Specifications UE55F6400
SAMSUNG UE55F6400AK
General repair guidelines for TV LCD LED
Possible malfunctions
- The SAMSUNG UE55F6400AK TV does not turn on and does not show any signs of turning on, it does not respond to the control buttons or the remote control.
Often with such manifestations, the main power module BN44-00625C is found to be faulty. In the absence of the necessary supply voltages in the secondary circuits of its converters, it is necessary to check the power switches and rectifier diodes for a possible partial or complete breakdown.
It should not be forgotten that during breakdowns of diodes in the secondary circuits, the converter can operate in emergency short circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key 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), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
The most likely in these cases is a malfunction of the LED backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED, if you connect the probes in the forward direction, the red probe to the anode, and the black to the cathode. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode 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 constantly or blinks.
Repair or diagnostics of the BN41-01958B motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard board - SEMS30, WT61P807, 24C256, 25Q40, K4B2G1646E, KLM4G1FE3B,. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If the TV works normally from external devices, but does not tune into television channels, the tuner BN40-00262B may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. 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, remind users! Attempts to self-repair a SAMSUNG UE55F6400AK TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
SCHEMATIC MANUAL -------------> SAMSUNG UE32F6400, UE40F6400, UE46F6400, UE50F6400, UE55F6400, UE65F6400, UE75F6400 CHASSIS U85A
The appearance of the MainBoard BN41-01958B is shown in the figure below:BN41-01958B
BN41-01958B can be used in TVs:
SAMSUNG UE39F5500 UE39F5500AK (Panel HF390BGM-C1), SAMSUNG UE32F5300AK (Panel HF320BGA-B1), SAMSUNG UE40F6200AK (Panel CY-HF400BGLV2V), SAMSUNG UE32F4500AK (Panel HF32AGH-R1), SAMSUNG UE42F5300AK (Panel CY-HF420BGAV1V), SAMSUNG UE46F6500 AK (Panel CY-HF400CSLV1V), SAMSUNG UE46F6330AK UE46F6330 (Panel CY-HF460CSLV2V), SAMSUNG UE32F6330 AK (Panel CY-HF320CSLV1V), SAMSUNG UE40F6330AK UE40F6330 (Panel CY-HF400CSLV5V), SAMSUNG UE40F6510AB UE40F6510 (Panel CY-GF400CSLV2V), SAMSUNG UE55F6400AK UE55F6400 (Panel CY-HF550CSLV1V), SAMSUNG UE40F6540AB (Panel CY-GF400CSLV3V), SAMSUNG UE40F6500 UE40F6500SS (Panel CY-GF400CSLV1H), SAMSUNG UE46F6650 UE46F6650AB (Panel CY-GF460CSLV1V), SAMSUNG UE46F6510 UE46F6510AB (Panel CY-GF460CSLV2V), SAMSUNG UE50F6330 UE50F6330AK (Panel HF500CSA-B1).
The appearance of the power supply
Main features of the SAMSUNG UE55F6400AK device:
Installed matrix (LED-panel) CY-HF550CSLV1V or CY-HF400CSLV3V.
The matrix control uses the Timing Controller (T-CON) LSF550HJ012.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE55F6400AK TV is carried out by the power module BN44-00625C, or its analogs.
MainBoard - the main board (motherboard) is a BN41-01958B module, using microchips SEMS30, WT61P807, 24C256, 25Q40, K4B2G1646E, KLM4G1FE3B, and others.
The tuner BN40-00262B provides the reception of television programs and tuning to channels.
