Technical description and composition of the SAMSUNG UE32N4000AU TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32N4000AU
Panel: CY-JN032AGLR1V
LED backlight: LM41-00616A L1_N5K_C2H_FAM_S5 (1)
LED driver (backlight): integrated into MainBoard
PWM LED driver: BD9413F
Power Supply (PSU): Adapter 19V 3.17A
MainBoard: BN41-02582B BN94-13043H
IC MainBoard: CPU: SENK20-MS, NAND: ESTM NT17L 2M, Audio: TAS5747
Tuner: BN37-00013A
Technical Specifications UE32N4000AU
SAMSUNG UE32N4000AU
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE32N4000AU 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.
Failure in such cases is possible in the power supply circuits.
This TV model is equipped with an external unit such as Adapter 19V 3.17A, which the owner can purchase independently, and its repair is not always advisable, however, sometimes there is a certain sense to open it and eliminate simple typical defects typical for similar IIPs. First of all, it is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes for a short circuit.
In the event of breakdowns in the secondary circuits of the converter, it may fail to operate 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 keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit.
PWM controllers (PWM), in the absence of visible external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- 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.
Often in such cases, there is no LED backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
When trying to detect a break in the LED lines, it should be borne in mind 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 TV does not turn on, the indicator signals standby or working mode, or blinks.
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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: SENK20-MS, NAND: ESTM NT17L 2M requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
Before changing the tuner BN37-00013A, if it is not possible to tune to television channels, 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
Owners and users of the SAMSUNG UE32N4000AU TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-serviceability of the device!
The appearance of the MainBoard BN41-02582B is shown in the figure below:BN41-02582B
Main features of the SAMSUNG UE32N4000AU device:
Installed matrix (LED panel) CY-JN032AGLR1V.
To power the backlight LEDs, a converter is used, combined with the main board BN41-02582B, controlled by the BD9413F PWM controller.
To power all internal components of the SAMSUNG UE32N4000AU TV, an external adapter type 19V 3.17A is used.
MainBoard - the main board (motherboard) is a BN41-02582B module, using CPU chips: SENK20-MS, NAND: ESTM NT17L 2M, Audio: TAS5747 and others.
The tuner BN37-00013A provides the reception of television programs and tuning to channels.