Technical description and composition of the SAMSUNG UE40D5000PN TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40D5000PN
Chassis / Version: U57A
Panel: LD400BGC-C2
LED backlight: 2011SVS40-FHD-RIGHT, 2011SVS40-FHD-LEFT, JVG4-400SMA-R1 (10,11,09)
T-CON: V460HJ1-C01
LED driver (backlight): integrated into PSU
PWM LED driver: SLC3011M
Power Supply (PSU): BN44-00422B PD46AD-BDY
PWM Power: 3BR1765JZ (Standby), 1HS01G (PWM resonant), FA5591N (PFC)
MOSFET Power: NDF05N50ZG, MDF5N50, K8N60D
MainBoard: BN41-01661B BN94-05223D
IC MainBoard: NTP-7411S, AO Z1033AI (8), S4327 (8)
Tuner: DT0S40FVH082A BN40-00196A
Technical Specifications UE40D5000
SAMSUNG UE40D5000PN
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs SAMSUNG UE40D5000PN, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. From the visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before the necessary measurements are taken. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element outputs, swollen rectifier filter capacitors, charred resistors and other circuit elements.
In the absence of any signs of operability, when the SAMSUNG UE40D5000PN 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 BN44-00422B PD46AD-BDY power supply module of the TV. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself 3BR1765JZ (8), 1HS01G (8), 2A11602 (8), EN210, AO 4498E (8), SLC C55757GU ( 14), MDF5N50, K8N60D, NDF05N50ZG.jpg. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
Sometimes the SAMSUNG UE40D5000PN TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the LD400BGC-C2 panel backlight LED converter, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including the power supply unit (power supply unit).
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source.
Repair of the BN94-05223D motherboard should begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - NTP-7411S, AO Z1033AI (8), S4327 (8) and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
The malfunction of the tuner DT0S40FVH082A BN40-00196A is established after checking the software and all the supply voltages at its terminals, including the varicap supply voltage (30-33V).
Attention to users! Self-repair of a SAMSUNG UE40D5000PN TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC MANUAL --------------> Samsung UE40D5000 Chassis U57A.
Chassis : U66A Model : UE32D55**R*, UE37D55**R*, UE40D55**R*, UE46D55**R*, UE32D57**RS, UE37D57**RS, UE40D57**RS, UE46D57**RS
Chassis : U57A Model : UE32D50**PW, UE37D50**PW, UE40D50**PW, UE46D50**PW, UE32D40**NW
Chassis : U57B Model : UE19D40**NW, UE22D50**NW, UE27D50**NW
PSU SCHEMATIC ----------------> BN44-00422B Power SUPPLY
The appearance of the MainBoard BN41-01661B is shown in the figure below:
BN41-01661B
BN41-01661B can be used in TVs:
SAMSUNG UE32D4000NW UE32D4000 (Panel LD320AGC-C1 (V315B5-P10)), SAMSUNG UE40D5000PN (Panel LD400BGC-C2), SAMSUNG UE40D5000PW (Panel LD400BGC-C2 DD01), SAMSUNG UE32D5800VW UE32D5800 (Panel LTJ320HN02-L), SAMSUNG UE40D5800 UE40D5800VW (Panel LTJ400HM04-L ), SAMSUNG UE37D5000PW UE37D5000 (Panel LD370BGB-C1), SAMSUNG UE46D5000PW UE46D5000 (Panel LTG460HN01-V).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the BN44-00422B module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the 1HS01G PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the mains capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the SAMSUNG UE40D5000PN device:
Installed matrix (LED-panel) LD400BGC-C2.
The matrix control uses the Timing Controller (T-CON) V460HJ1-C01.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SLC3011M PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE40D5000PN television are generated by the BN44-00422B power supply module or its analogs using 3BR1765JZ (Standby), 1HS01G (PWM resonant), FA5591N (PFC) microcircuits and power switches of the NDF05N50ZG, MDF5N60, K8 type.
MainBoard - the main board (motherboard) is a module BN41-01661B, using NTP-7411S, AO Z1033AI (8), S4327 (8) and others.
The tuner DT0S40FVH082A BN40-00196A provides the reception of television programs and tuning to channels.
