Technical description and composition of the SAMSUNG UE48JU6600U TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE48JU6600U
Panel: CY-WJ048HGLVBV
T-CON: BN41-02297
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00807D
MainBoard: BN41-02344D
IC MainBoard: CPU: SDP1406, Spi Flash: 25Q40CLSIP, SOUND: NTP7415
Tuner: BN40-00316B
Technical Specifications UE48JU6600U
SAMSUNG UE48JU6600U
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE48JU66 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
Usually with such manifestations, the defect is caused by faulty elements in the main power module BN44-00807D. 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 a short circuit.
In case of breakdowns of semiconductors in secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse 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, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. 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 LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
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). Board repair and replacement of CPU chips: SDP1406, Spi Flash: 25Q40CLSIP, SOUND: NTP7415 are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Before changing the tuner BN40-00316B, if there is no possibility of tuning to television channels, you should make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
TV users and owners must remember that attempts to self-repair a SAMSUNG UE48JU66 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
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 UE48JU6600U device:
Installed matrix (LED-panel) CY-WJ048HGLVBV.
The matrix control uses the Timing Controller (T-CON) BN41-02297.
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 UE48JU6600U TV is carried out by the BN44-00807D power module, or its analogues.
MainBoard - the main board (motherboard) is a BN41-02344D module, using CPU chips: SDP1406, Spi Flash: 25Q40CLSIP, SOUND: NTP7415 and others.
The tuner BN40-00316B provides the reception of television programs and tuning to channels.
