Technical description and composition of the SAMSUNG UE32F5000AK TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32F5000AK
Chassis / Version: U85B
Panel: CY-HF320BGSV1V // HF320BGA-B1
LED backlight: D2GE-320SC0-R3 (12,12,27) LUMENS
T-CON: RUNTK 5351TP 0055FV // T320HVN03.0 32T36-C08
LED driver (backlight): integrated into PSU
PWM LED driver: SEM5027A
MOSFET LED driver: D9N40, 3N40K
Power Supply (PSU): BN44-00605A
PWM Power: S3310 (NCP1200D60)
MOSFET Power: STF10NM60N
MainBoard: BN41-01955A
IC MainBoard: CPU: SEMS29; DRAM: K4B1G1646G-BCKO; SPI Flash: W25Q40BL; EEPROM: S24C256C; Sound: NTP7412S
Tuner: DNTS403EH105A (BN40-00262A)
Control: Remote: AA59-00741A, IR: A26411B (BN41-01976B)
Technical Specifications UE32F5000
SAMSUNG UE32F5000AK
General repair guidelines for TV LCD LED
In the case when the UE32F5000AK does not turn on, does not respond to the remote control and buttons on the front panel, does not blink bulbs and does not show any signs of operability, the power supply module BN44-00605A is probably faulty in this case. In case of its serviceability with such manifestations, it is necessary to check the stabilizer (converter) of the processor power on the motherboard. In this case, when repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
The LED driver is combined with the power module and is a step-up voltage converter with stabilization of the current in the LEDs.
If the SAMSUNG UE32F5000AK has no image, there is sound and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the CY-HF320BGSV1V panel, or their power converter - LED driver. Sometimes when you turn on the image may appear and immediately disappears. In such cases, it is necessary to check the electrolytic capacitors - the filter for power supply of the Ice driver and all secondary rectifiers of the power module.
To identify a break in the LED lines (strings) without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary. The use of voltage sources for this purpose is unsafe. Often there is a need to disassemble the panel.
A typical defect of the CY-HF320BGSV1V and HF320BGA-B1 panels is the failure of the LEDs. Details on how to perform this repair are described on the Backlight Repair page. Replacement LEDs.
If the motherboard BN41-01955 is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software (software). Sometimes you can check the health of MB only by replacement.
Board repair and replacement of CPU chips: SEMS29 are made 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.
Before changing the tuner DNTS403EH105A (BN40-00262A), if it is not possible to tune to television channels, make sure that there are supply voltages on the corresponding terminals of the tuner, data exchange with the processor, and the software must also be checked for correctness.
Attention to the owners! Attempts to repair the TV SAMSUNG UE32F5000AK on its own are not recommended by the manufacturer and can lead to serious negative consequences!
One of the typical SAMSUNG UE32F5000AK faults often occurs in Samsung's CY-HF320BGSV1V LED panel.
External manifestations: no image, the backlight does not work. The LED driver provides maximum voltage for powering the LEDs. Usually the LEDs themselves turn out to be faulty, which, when tested, turn out to be either in a cliff or with broken internal zener diodes.
The LEDs in this case must be replaced, and the maximum driver current limited by 10-20% according to the bulletin from the manufacturer !!
SCHEMATIC --------------> Chassis: U85B, U85C. Models: UE**F5000A*, UE32F4800AW, UE**F5005AK, UE**F5020AK, UE**F5070SS, UE32F40**AW.
FOR TYPE SAMSUNG UE32F5000AK Ver: AS01; Panel: HF320BGA-B1; T-con: 32T36-C08 T320HVN03.0 CTRL BD;
Main BN94-06783U (BN41-01955B); PSU: BN44-00605A L32SF_DSM PSLF770S05A;
Led Backlight: D2GE-320SC0-R3(12,12,27), BN41-01969A;
IR: BN96-26411B (BN41-01976B); Remote: AA59-00741A
The appearance of the MainBoard BN41-01955A is shown in the figure below:BN41-01955A
BN41-01955A can be used in TVs:
SAMSUNG UE32F5000AK (Panel CY-HF320BGSV1V), SAMSUNG UE32F5020AK (Panel T320HVF03.0), SAMSUNG UE42F5000AK UE42F5000 (Panel HF420BGA-B1), SAMSUNG UE46F5000AK UE46F5000 (Panel CY-HF460BGLV1V), SAMSUNG UE32F4800AW UE32F4800 (Panel CY-HF320AGLV2V).
The appearance of the power supply
Main features of the SAMSUNG UE32F5000AK device:
Installed matrix (LED panel) CY-HF320BGSV1V or HF320BGA-B1.
The matrix control uses the Timing Controller (T-CON) RUNTK.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SEM5027A PWM controller. As power elements of the LED driver, keys of the D9N40, 3N40K type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32F5000AK TV are generated by the BN44-00605A power module or its analogs using S3310 microcircuits (NCP1200D60) and power switches of the STF10NM60N type.
MainBoard - the main board (motherboard) is a BN41-01955A module, using CPU chips: SEMS29; DRAM: K4B1G1646G-BCKO; SPI Flash: W25Q40BL; EEPROM: S24C256C; Sound: NTP7412S and others.
The tuner DNTS403EH105A (BN40-00262A) provides the reception of television programs and tuning to channels.
