Technical description and composition of the SAMSUNG UE40J6230AU TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40J6230AU
Chassis / Version: FA01
Panel: CY-GH040BGLVBV
LED backlight: AOT_40_5X6 + 5X3 3030FC_S_L1_V6_2015_11_04, AOT_40_5X6 + 5X3 3030FC_S_R1_V6_2015_11_04
T-CON: BN95-03521A BN97-11524A
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00703H L48S1_FDY
MainBoard: BN41-02353C BN94-10812C
IC MainBoard: W25Q40, 24c512
Tuner: Tuner
Control: IR: BN41-02151A, WIBT40A BN96-30218F, WIDT30Q BN59-01174D
Technical Specifications UE40J6230AU
SAMSUNG UE40J6230AU
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SAMSUNG UE40J6230AU 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 fault is most likely to be detected in the BN44-00703H power supply module. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches of the converters and rectifier diodes for the probability of short circuit.
In case of 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 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.
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.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- 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 BN41-02353C 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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - W25Q40, 24c512 and replace the failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the Tuner tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Once again, remind users! Attempts to self-repair a SAMSUNG UE40J6230AU TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
The appearance of the MainBoard BN41-02353C is shown in the figure below:BN41-02353C
BN41-02353C can be used in TVs:
SAMSUNG UE50J6240 UE50J6240AU (Panel CY-GH050CSNV4V), SAMSUNG UE40J6230AU (Panel CY-GH040BGLVBV), SAMSUNG UE40J6240AU (Panel CY-GH040BGLVBV).
The appearance of the power supply
Main features of the SAMSUNG UE40J6230AU device:
Installed matrix (LED-panel) CY-GH040BGLVBV.
The matrix control uses the Timing Controller (T-CON) BN95-03521A.
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 UE40J6230AU TV is carried out by the power module BN44-00703H, or its analogues.
MainBoard - the main board (motherboard) is a BN41-02353C module, using microchips W25Q40, 24c512 and others.
The Tuner provides TV reception and channel tuning.
