SAMSUNG UE39F5020AK TV description and composition, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE39F5020AK
Panel: CY-HF390BGMV1V
T-CON: V390HJ4-CE1; 25X40BVNIG
LED driver (backlight): integrated into PSU; 136V 280mA, 182V 280mA, 147V 280mA, 195V 280mA
PWM LED driver: Z1948AI
Power Supply (PSU): BN44-00609F L42SFV_DSM
PWM Power: S3050 (PFC), ADP3110A, D2011K (Standby)
MainBoard: BN41-01955B BN94-06996P
IC MainBoard: SEMS29, K4B1G1646G-BCK0, F59L1G81A-25TI, 24C256, 24C02, 25Q40CLSIP
Tuner: BN40-00262A DNTS403EH105A
Technical Specifications UE39F5020
SAMSUNG UE39F5020AK
General repair guidelines for TV LCD LED
If the SAMSUNG UE39F5020AK does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a L42SFV_DSM power supply module malfunctioning. In some cases, only the processor power regulator on the MainBoard may be faulty.
In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
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 S3050 PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
In cases where the SAMSUNG UE39F5020AK 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 CY-HF390BGMV1V panel), which is made according to the Step-UP-Converter scheme and is included composition of the general PSU module. When you turn on the TV, the image may appear briefly and disappear. It must be borne in mind that with such manifestations the LEDs themselves often fail.
Often, in the absence of backlight, disassembling the panel is required to check the health of LED transitions, as well as the reliability of contact connections in the lines and connectors.
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.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - SEMS29, K4B1G1646G-BCK0, F59L1G81A-25TI, 24C256, 24C02, 25Q40CLSIP. Defective components should be replaced.
If you suspect a malfunction of the DNTS403EH105A tuner, first of all, you need to make sure the software is correct, as well as the presence of the necessary voltage levels at the corresponding terminals of the tuner. You can check the data exchange of the tuner with the processor via the I2C bus using an oscilloscope.
We recommend the owners of the UE39F5020AK TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH, EEPROM ---------------> SAMSUNG UE39F5020AK , Main: BN41-01955 BN94-06996P, Panel: CY-HF390BGMV1V
The appearance of the MainBoard BN41-01955B is shown in the figure below:BN41-01955B
BN41-01955B can be used in TVs:
Samsung UE32F4000AW (Panel CY-HF320AGLV1V), SAMSUNG UE32F4020AW (Panel CY-HF320AGLV1V), SAMSUNG UE39F5020AK (Panel CY-HF390BGMV1V), SAMSUNG UE39F5000AK UE39F5000 (Panel CY-HF390BGMV1V).
PSU Advanced
In the UE39F5020AK TV, the BN44-00609F power module is installed using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the S3050 PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected to the network directly through open diodes, when the reactance (about 15-30 ohms at a frequency of 50 Hz) determines the charge current. As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the SAMSUNG UE39F5020AK device:
Installed matrix (LED panel) CY-HF390BGMV1V.
The matrix control uses the Timing Controller (T-CON) V390HJ4-CE1 ;.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the Z1948AI PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE39F5020AK TV are generated by the BN44-00609F power module or its analogs using S3050 (PFC), ADP3110A, D2011K (Standby) microcircuits.
MainBoard - the main board (motherboard) is a BN41-01955B module, using microchips SEMS29, K4B1G1646G-BCK0, F59L1G81A-25TI, 24C256, 24C02, 25Q40CLSIP and others.
Tuner BN40-00262A DNTS403EH105A provides the reception of television programs and tuning to channels.
Information from an alternative source:
SAMSUNG UE39F5020AK
Panel Type (Matrix): CY-HF390BGMV1V
Motherboard: BN94-06996P BN41-01955, SEMS29, K4B1G1646G-BCK0 x2, F59L1G81A-25TI, 24C256, 24C02, 25Q40CLSIP, Tuner: DNTS403EH105A BN40-00262A
T-con: V390HJ4-CE1, 25X40BVNIG
PSU: L42SFV_DSM BN44-00609F, S3050, ADP3110A, D2011K, Z1948AI
Remote control: AA59-00741A
