Technical description and composition of the SAMSUNG UE55KU6300U TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE55KU6300U UE55KU6300
Chassis / Version: BN41-02528A
Panel: CY-WK055HQAV1V
LED driver (backlight): integrated into PSU
PWM LED driver: SLC3011N
MOSFET LED driver: TO-220F
Power Supply (PSU): BN44-00807A L55S6_FHS REV1.2
PWM Power: SPC7011F, FA6A20
MOSFET Power: N-FET TO-220F
MainBoard: BN41-02528A BN94-10827L
IC MainBoard: SDP1531, K4F8E304HBMGCH, 25Q80DVSIG, 25Q40CLSIP, S24C512C
Tuner: BN40-00323A
Technical Specifications UE55KU6300U
SAMSUNG UE55KU6300U
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SAMSUNG UE55KU6300U TV does not turn on and does not show any signs of operability at all. There is no reaction to the remote control and control buttons from the front panel.
With such manifestations, a malfunction is most likely to be detected in the BN44-00807A power supply module. It is necessary to measure its output voltages, and in case of their absence, check the serviceability of power switches (N-FET TO-220F) of converters and rectifier diodes for a short circuit probability.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode, or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers SPC7011F, FA6A20, in the absence of visible damage or obvious short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. Often the cause is a malfunction of the LEDs (open circuit, short circuit ...), or the connectors of the strips (strings), less often the LED driver is malfunctioning.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can test each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN transition is indirectly indicative of a LED-a
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the BN41-02528A 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). When repairing an MB board, you need to check its components SDP1531, K4F8E304HBMGCH, 25Q80DVSIG, 25Q40CLSIP, S24C512C. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
The malfunction of the tuner BN40-00323A is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
It should be remembered! Attempts to independently repair the SAMSUNG UE55KU6300U 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!
The appearance of the MainBoard BN41-02528A is shown in the figure below:BN41-02528A
BN41-02528A can be used in TVs:
SAMSUNG UE43KU6650U (Panel CY-VK043HGAV5V), SAMSUNG UE43KU6000W UE43KU6000 (Panel CY-GK043HGEV1H), SAMSUNG UE55KU6400 UE55KU6400U (Panel CY-KK055HQLV4H), SAMSUNG UE49KU6670 UE49KU6670U (Panel CY-VK049HGLV4V), SAMSUNG UE40KU6000U (Panel LSF400FN05-L03 CY-GK040HGLV4V), SAMSUNG UE40KU6300U (Panel CY-WK040HGLV1V), SAMSUNG UE43KU6500U (Panel CY-VK043HGAV4V T430QVR01.0), SAMSUNG UE40KU6402U (Panel CY-KK040HGNV4H).
The appearance of the power supply
Main features of the SAMSUNG UE55KU6300U device:
Installed matrix (LED panel) CY-WK055HQAV1V.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SLC3011N PWM controller. As power elements of the LED driver, keys of the TO-220F type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE55KU6300U TV are generated by the BN44-00807A power module or its analogs using SPC7011F, FA6A20 microcircuits and N-FET TO-220F type power switches.
MainBoard - the main board (motherboard) is a BN41-02528A module, using microchips SDP1531, K4F8E304HBMGCH, 25Q80DVSIG, 25Q40CLSIP, S24C512C and others.
The tuner BN40-00323A provides the reception of television programs and tuning to channels.
