Technical description and composition of the SAMSUNG UE32J4000AK TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32J4000AK UE32J4000
Panel: JJ032AGH-R1
LED backlight: 2015 SVS F-COM 32 HD L5 REV1.4 150518 LM41-00133A_LM41-00148A
T-CON: 8T3151A04-8 VER.2.1
LED driver (backlight): integrated into MainBoard
PWM LED driver: BD9397EFV
Power Supply (PSU): A4819_FDY Adapter 19V 2.53A
MainBoard: BN41-02358B BN94-08202A
IC MainBoard: NAND: F59L1G81A-25TI, DDR: K4B2G1646Q-BCK0, FLASH: W25Q40CLSIP, EPRROM: S24C256
Tuner: BN40-00316A
Control: BN96-36076G J4003 BN41-02398A
Appearance
SAMSUNG UE32J4000AK
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32J4000AK does not turn on at all. The control lights do not light or flash. On the remote control and the buttons on the control panel does not respond.
In such cases, the fault should be sought first in the power supply module A4819_FDY.
The owner of a TV can purchase an external power supply unit such as A4819_FDY and repairing it is not always advisable. In any case, the simplest typical defects characteristic of most IIP schemes can be easily detected and eliminated after opening. It is necessary to measure its secondary output voltages, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip can also cause a malfunction of the power switch of the converter and is checked by replacement.
- 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
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.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a malfunction, the zener diode PN junction will either be cut off or broken into short-circuit.
- The TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-02358B motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, you should update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - NAND: F59L1G81A-25TI, DDR: K4B2G1646Q-BCK0, FLASH: W25Q40CLSIP, EPRROM: S24C256 which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before changing the tuner BN40-00316A, if it is not possible to tune 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 need to remember that attempts to self-repair a SAMSUNG UE32J4000AK TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
UE32J4000AW - Panel: JJ032AGH-R1, MainBoard: BN41-02358A BN94-08202C
BN41-02358B
The appearance of the power supply
Main features of the SAMSUNG UE32J4000AK device:
Installed matrix (LED-panel) JJ032AGH-R1.
The matrix control uses the Timing Controller (T-CON) 8T3151A04-8.
To power the backlight LEDs, a converter is used, combined with the main board BN41-02358B, controlled by the BD9397EFV PWM controller.
An external source such as A4819_FDY Adapter 19V 2.53A is used to power all internal components of the SAMSUNG UE32J4000AK TV.
MainBoard - the main board (motherboard) is a BN41-02358B module, using NAND chips: F59L1G81A-25TI, DDR: K4B2G1646Q-BCK0, FLASH: W25Q40CLSIP, EPRROM: S24C256 and others.
The tuner BN40-00316A provides the reception of television programs and tuning to channels.