Technical description and composition of the SAMSUNG UE32D4000NW TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32D4000NW UE32D4000
Chassis / Version: U57A // Ver. H304
Panel: LD320AGC-C1 (V315B5-P10) // LTJ320AP01-L
LED backlight: 2011SVS32_4K Edge LED (for LTJ320AP01-L)
LED driver (backlight): integrated into PSU; 203V 165mA
PWM LED driver: SEM5025
Power Supply (PSU): BN44-00472A PD32G0S_BSM // BN44-00421A, PSLF800A03A
PWM Power: STR-W6053S
MOSFET Power: MDD5N40RH
MainBoard: BN41-01661A BN94-05162C // BN41-01661B BN94-05221C
IC MainBoard: K4B1G1646G-BCH9, WT61P805, NTP-7411S Sound
Tuner: BN40-00221A
Control: Remote: AA59-00508A, IR: BN96-17614J (BN41-01695B)
Technical Specifications UE32D4000
SAMSUNG UE32D4000NW
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should examine all the internal components of the SAMSUNG UE32D4000NW TV, as well as the external elements of the case. Many visible changes in the state of the elements make it possible to determine the future direction of troubleshooting and localization of the defect. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
In the absence of any signs of operability, when the SAMSUNG UE32D4000NW does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the PSLF800A03A TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), the mains fuse must first be checked. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
In cases where the SAMSUNG UE32D4000NW TV has lost its image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the LD320GC-C1 panel (V315B5-P10)). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
A malfunction in the backlight circuits often occurs due to a break in the power supply lines of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the soldering of their terminals, as well as the reliability of the connections in the connectors and the soldering of the terminals.
It should be remembered that it is not possible to determine the break 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.
In cases of attempts to repair the DTOS40FVH082A motherboard, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
Board repair and replacement of NTP-7411Sound microcircuits 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.
We recommend the owners of the UE32D4000NW TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
SCHEMATIC -------------> UE32D4000NW Chassis U57A.
PSU SCHEMATIC --------> BN44-00472A Power supply.
The appearance of the MainBoard BN41-01661A is shown in the figure below:BN41-01661A
BN41-01661A can be used in TVs:
SAMSUNG UE32D4000NW UE32D4000 (Panel LD320AGC-C1 (V315B5-P10)), SAMSUNG UE32D4010NW (Panel UE32D4010NW).
The appearance of the power supply
Main features of the SAMSUNG UE32D4000NW device:
Installed matrix (LED panel) LD320AGC-C1 (V315B5-P10) or LTJ320AP01-L.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the SEM5025 PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE32D4000NW TV are generated by the BN44-00472A power supply module or its analogs using STR-W6053S microchips and MDD5N40RH type power switches.
MainBoard - the main board (motherboard) is a BN41-01661A module, using K4B1G1646G-BCH9, WT61P805, NTP-7411S sound chips and others.
The tuner BN40-00221A provides the reception of television programs and tuning to channels.