Technical description and composition of the SAMSUNG UE40KU6000U TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40KU6000U
Chassis / Version: FB02
Panel: LSF400FN05-L03 CY-GK040HGLV4V
LED backlight: S_5U75_40_FL_L04 / R05 REV1.4 150514 LM41-00120S
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN41-02499A BN94-10711A L40S5_KVD
MOSFET Power: IPAW60R380CE
MainBoard: BN41-02528A
IC MainBoard: SDP1531, 25Q40, 25Q80, 24C512, K4F8E304H, K4F2E3S4H
Tuner: BN40-00322A
Control: Remote: BN59-01259B
Technical Specifications UE40KU6000U
SAMSUNG UE40KU6000U
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SAMSUNG UE40KU6000U 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.
In some of these cases, the main switching power supply, the BN41-02499A module, turns out to be faulty. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches and rectifier diodes of the converters for the probability of a short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And during short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
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 key parameters. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers, in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new, or obviously working.
- 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.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
When trying to identify a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
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, you should update or replace the software (software).
Attention TV owners! Self-repair attempts by SAMSUNG UE40KU6000U are not recommended by the manufacturer and can lead to serious negative consequences!
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 UE40KU6000U device:
Installed matrix (LED panel) LSF400FN05-L03 CY-GK040HGLV4V.
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 UE40KU6000U TV is carried out by the BN41-02499A power module, or its analogs using IPAW60R380CE type power switches.
MainBoard - the main board (motherboard) is a BN41-02528A module, using microchips SDP1531, 25Q40, 25Q80, 24C512, K4F8E304H, K4F2E3S4H and others.
The tuner BN40-00322A provides the reception of television programs and tuning to channels.