Technical description and composition of the SAMSUNG UE40JU6530U TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40JU6530U
Panel: CY-GJ040HGLV4V
LED backlight: V5DU-400DCA-R1 L00Q5 40U 34791A & V5DU-400DCB-R1 R00Q5 40U 34792A
T-CON: BN41-02297A BN95-01936B
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): BN44-00806A L40S6_FDY PCB REV 1.2
MOSFET Power: K8A50D
MainBoard: BN41-02344D BN94-10158V
IC MainBoard: CPU: SDP1406, Spi Flash: 25Q40CLSIP, SOUND: NTP7415, DDR: K4B2G1646Q-BCMA
Tuner: BN40-00318B
Control: IR: BN41-02324B BN96-35346J, WiFi: BN59-01194A WCH730B
Technical Specifications UE40JU6530U
SAMSUNG UE40JU6530U
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE40JU6530U does not turn on, does not respond to buttons and remote control, indicators on the front panel do not light up and do not blink.
With such manifestations, the BN44-00806A power supply module usually fails. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (K8A50D) and rectifier diodes in the converters for a short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often 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 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, 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 commands from the remote control. Or the image appears immediately after turning on and disappears.
The most likely in these cases is a malfunction of the LED backlight. The reason can be found in the failure of the LEDs, in the violation of the contact connections of the LED strips, or in the provision of their power (LED-driver).
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 junction indirectly indicates a LED-a
- 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 BN41-02344D 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). If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - CPU: SDP1406, Spi Flash: 25Q40CLSIP, SOUND: NTP7415, DDR: K4B2G1646Q-BCMA. Defective components should be replaced.
If there is no reception of television channels, but the TV is working properly from external devices, first of all, check the voltage of the tuner BN40-00318B and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
It should be remembered! Attempts to self-repair a SAMSUNG UE40JU6530U 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 BN41-02344D is shown in the figure below:BN41-02344D
The appearance of the power supply
Main features of the SAMSUNG UE40JU6530U device:
Installed matrix (LED-panel) CY-GJ040HGLV4V.
The matrix control uses the Timing Controller (T-CON) BN41-02297A.
To power the backlight LEDs, a converter is used, combined with the main board BN41-02344D.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE40JU6530U television is carried out by the BN44-00806A power module, or its analogs using power switches of the K8A50D type.
MainBoard - the main board (motherboard) is a BN41-02344D module, using CPU chips: SDP1406, Spi Flash: 25Q40CLSIP, SOUND: NTP7415, DDR: K4B2G1646Q-BCMA and others.
The tuner BN40-00318B provides the reception of television programs and tuning to channels.