Technical description and composition of the SAMSUNG UE32N5000AU TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32N5000AU UE32N5000
Chassis / Version: LA01
Panel: CY-JN032BGER1V
LED backlight: LM41-00618A
LED driver (backlight): integrated into MainBoard
PWM LED driver: BD9413F
MOSFET LED driver: TO-252
Power Supply (PSU): integrated into MainBoard
PWM Power: A5919_FSM Adapter 19V 3.17A BN44-00838A
MainBoard: BN41-02582B BN94-12480R
IC MainBoard: CPU: SENK20-MS, NAND ESTM NT17L 2M
Tuner: BN37-00331B
Technical Specifications UE32N5000AU
SAMSUNG UE32N5000AU
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE32N5000AU 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.
In this case, first of all, it is necessary to check the operability of the main power source - the AC / DC network voltage converter, all of whose elements are located on the MainBoard BN41-02582B. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches and rectifier diodes of the converters for a probable short circuit.
In the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most 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 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 A5919_FSM Adapter 19V 3.17A BN44-00838A, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn on and immediately disappears
Usually in such cases there is no backlighting of the LED panel (matrix). The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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 good LED-a
- 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 BN41-02582B motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, you should 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: SENK20-MS, NAND ESTM NT17L 2M. Defective components should be replaced.
If the TV works normally from external devices, but does not tune into television channels, the tuner BN37-00331B may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
It should be remembered! Attempts to self-repair a SAMSUNG UE32N5000AU 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 BN41-02582B is shown in the figure below:BN41-02582B
Main features of the SAMSUNG UE32N5000AU device:
Installed matrix (LED panel) CY-JN032BGER1V.
To power the backlight LEDs, a converter is used, combined with the main board BN41-02582B, controlled by the BD9413F PWM controller. As power elements of the LED driver, keys of the TO-252 type are used.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using A5919_FSM Adapter 19V 3.17A BN44-00838A microcircuits.
MainBoard - the main board (motherboard) is a BN41-02582B module using CPU chips: SENK20-MS, NAND ESTM NT17L 2M and others.
The tuner BN37-00331B provides the reception of television programs and tuning to channels.
