Technical description and composition of the SAMSUNG UE40FH5007K TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40FH5007K
Chassis / Version: TD01
Panel: CY-DF400BGLV1V
LED backlight: LUMENS D3GE-400SMB-R2 (13.07.10), D3GE-400SMA-R2 (13.07.10)
T-CON: LSF400HM02 BN41-01938B; EEprom: 24C64WP
LED driver (backlight): integrated into PSU; 135V 425mA
PWM LED driver: MAP3511
Power Supply (PSU): BN44-00666A
PWM Power: 3S111 (PWM Flyback)
MainBoard: BN41-01795A
IC MainBoard: WT61P805, EEprom: 24C256C4VCX, SPI Flash: 25Q40BVSIP
Tuner: BN40-00231A
Control: IR: BN96-22413B (BN41-01840C),
Technical Specifications UE40FH5007K
SAMSUNG UE40FH5007K
General repair guidelines for TV LCD LED
In cases when the SAMSUNG UE40FH5007K TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink and there are no sounds and no signs of operability at all, the BN44-00666A power supply module is most likely faulty or missing standby power. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the filters of the secondary rectifiers (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is checked by replacing it with a known good one.
Sometimes the SAMSUNG UE40FH5007K TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a possibility of a malfunction of the LED driver - the power converter of the backlight LEDs of the CY-DF400BGLV1V panel, or an open circuit in the LED circuit is possible. In such cases, first of all, it is necessary to verify the operability of the electrolytic capacitors of the filter by the power of the backlight unit.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source. By opening the panel, each LED can be checked separately. Usually, Chinese multimeters light up a single 3-volt LED, if you connect probes in the forward direction to it. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as a health indicator. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
On the BN41-01795A motherboard, in case of a malfunction, you should first check the performance of all the stabilizers and power converters of the microcircuits, and also, if necessary, update the software (software).
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 - WT61P805, EEprom: 24C256C4VCX, SPI Flash: 25Q40BVSIP 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 BN40-00231A is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Attention to users! Self-repair of a SAMSUNG UE40FH5007K TV without the appropriate qualifications and experience can lead to its complete non-repairability!
The appearance of the MainBoard BN41-01795A is shown in the figure below:BN41-01795A
BN41-01795A can be used in TVs:
SAMSUNG UE32EH4000 UE32EH4000W (Panel LTJ320AP03-L), SAMSUNG UE32EH5000W (Panel DE320BGM-C1), SAMSUNG UE26EH4000W (Panel T260XVN01.1), SAMSUNG UE32EH5007K UE32EH5007 (Panel LTJ320HN07-L), SAMSUNG UE32EH5047K UE32EH5047 (Panel DE320BGA-B1), SAMSUNG UE40EH5007K (Panel CY-DE400BGSV1L), SAMSUNG UE32EH5057K (Panel DE320BGA-B1), SAMSUNG UE40FH5007K (Panel CY-DF400BGLV1V), SAMSUNG UE40EH5047K (Panel LTJ400HM08-L), SAMSUNG UE40EH5057K UE40EH5057 (Panel CY-DE400BGSV1L), SAMSUNG UE40EH5050W UE40EH5050 (Panel CY-DE400BGSV1L), SAMSUNG UE40EH5000 UE40EH5000W (Panel LTJ400HM801-V), SAMSUNG UE32EH5000K UE32EH5000 (Panel LTJ320HN07-L), SAMSUNG UE32EH5000W UE32EH5000 (Panel DE320BGM-C1), SAMSUNG LE32E420E2W LE32E420 (Panel LTF320AP13), SAMSUNG UE32EH4030 UE32EH4030W (Panel DE320AGH-C2), SAMSUNG UE46EH5057K UE46EH5057 (Panel LTJ460HN05-L), SAMSUNG UE40EH5040 UE40EH5040W (Panel CY-DE400BGSV1L).
The appearance of the power supply
Main features of the SAMSUNG UE40FH5007K device:
Installed matrix (LED-panel) CY-DF400BGLV1V.
The matrix control uses the Timing Controller (T-CON) LSF400HM02.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the MAP3511 PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE40FH5007K TV are generated by the BN44-00666A power supply module or its analogs using 3S111 (PWM Flyback) microcircuits.
MainBoard - the main board (motherboard) is a BN41-01795A module, using WT61P805 chips, EEprom: 24C256C4VCX, SPI Flash: 25Q40BVSIP and others.
The tuner BN40-00231A provides the reception of television programs and tuning to channels.
