Technical description and composition of the SAMSUNG UE49J5300AU TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE49J5300AU UE49J5300
Chassis / Version: CA01
Panel: CY-JM049BGHV1V
LED backlight: LM41-00121W LM41-00146A, LM41-00121V LM41-00145A
T-CON: TT4851B01-3-C-4
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00856C
MainBoard: BN41-02585A BN94-11899K
IC MainBoard: IR: BN41-02477A BN96-38694D, WIFI: WIDT30Q BN59-01174D
Tuner: BN40-00318A
Technical Specifications UE49J5300AU
SAMSUNG UE49J5300AU
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE49J5300AU TV does not turn on. There are no signs of operability. The indicators on the front panel do not light up and do not blink, the TV does not respond to the control buttons.
Most often, with such manifestations, the main power module BN44-00856C is found to be faulty. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches and rectifier diodes of the converters for a possible 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, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
As a rule, in such cases there is no display backlight. The reason can be found in the malfunction of the LEDs, in the violation of the contact connections of the LED strips, or in the provision of their power (LED driver).
When trying to detect a break in the LED lines, it should be taken into account 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 blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN41-02585A 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). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard board - IR: BN41-02477A BN96-38694D, WIFI: WIDT30Q BN59-01174D. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
It should be remembered! Attempts to self-repair a SAMSUNG UE49J5300AU 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 BN41-02585A is shown in the figure below:BN41-02585A
Main features of the SAMSUNG UE49J5300AU device:
Installed matrix (LED-panel) CY-JM049BGHV1V.
The matrix control uses the Timing Controller (T-CON) TT4851B01-3-C-4.
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 UE49J5300AU TV is carried out by the power module BN44-00856C, or its analogues.
MainBoard - the main board (motherboard) is a BN41-02585A module, using IR chips: BN41-02477A BN96-38694D, WIFI: WIDT30Q BN59-01174D and others.
The tuner BN40-00318A provides the reception of television programs and tuning to channels.
