Technical description and composition of the SAMSUNG UE40H7000 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40H7000 UE40H7000AK
Panel: CY-GH040CSLV5V
LED backlight: D4GE-400DCA-R2 [14,03,17], D4GE-400DCB-R2 [14,03,17]
T-CON: LSF400HF04 BN41-02110A
LED driver (backlight): integrated into PSU
PWM LED driver: 7014X
Power Supply (PSU): BN44-00709A L48X1T_ESM PSLF141X06A
PWM Power: S3051 (PFC), FA6A01N (FA5760N)
MainBoard: BN41-02156A BN94-07343S
IC MainBoard: CPU: SEMS-31, SPI-FLASH: 25Q40, EEPROM: 24C512
Tuner: BN40-00288A
Control: WIFI: WIDT30Q BN59-01174A, BLUETOOTH: WIBT40A BN96-30218B
Technical Specifications UE40H7000
SAMSUNG UE40H7000
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE40H7000 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
With such manifestations, a malfunction is most likely to be detected in the BN44-00709A power supply module. Then it is necessary to measure its output voltage and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches and rectifier diodes of converters for the presence of a possible short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the main fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM chips S3051 (PFC), FA6A01N (FA5760N) are usually checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN41-02156A motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard - CPU: SEMS-31, SPI-FLASH: 25Q40, EEPROM: 24C512. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
The malfunction of the tuner BN40-00288A 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 TV owners! Attempts to self-repair SAMSUNG UE40H7000 are not recommended by the manufacturer and can lead to serious negative consequences!
Service manual -----------------> SAMSUNG UE40H7000 Chassis
The rear view of the MainBoard BN41-02156A is shown in the figure below:BN41-02156A
BN41-02156A can be used in TVs:
SAMSUNG UE40H6200 UE40H6200AK (Panel CY-GH040CSLV1V), SAMSUNG UE32H5500 UE32H5500AK (Panel GH032BGA-B2), SAMSUNG UE40H5500 UE40H5500AK (Panel CY-GH040BGLV2V), SAMSUNG UE32H6200AK (Panel CY-GH032CSLV1V), SAMSUNG UE40H6350 (Panel CY-GH040CSLV2V), SAMSUNG UE32H6410AU UE32H6410 (Panel CY-GH032CSLV4V), SAMSUNG UE40H6400AK UE40H6400 (Panel CY-SH040CSL V2H), SAMSUNG UE48H6200 UE48H6200AK (Panel CY-GH048CSLV1V), SAMSUNG UE48H6230AK UE48H6230 (Panel CY-GH048CSLV1V), SAMSUNG UE48H6400AK UE48H6400 (Panel CY-GH048CSLV2V), SAMSUNG UE48H6410AU UE48H6410 (Panel CY-GH048CSLV4V), SAMSUNG UE48H6240AK UE48H6240 (Panel CY-GH048CSLV1V), SAMSUNG UE32H4500AK UE32H4500 (Panel CY-HH032AGLV2V), SAMSUNG UE40H6410 UE40H6410AU (Panel CY-GH040CSLV4V), SAMSUNG UE40H6500 UE40H6500AT (Panel CY-GH040CSLV1V), SAMSUNG UE32H6230 UE32H6230AK (Panel T320HVF05.2), SAMSUNG UE32H4510 UE32H4510AK (Panel HH032AGH-R3 BN96-31086F), SAMSUNG UE32H6350 UE32H6350AK (Panel CY-GH032CSLV2V), SAMSUNG UE40H6230 UE40H6230AK (Panel CY-GH048CSLV1V).
The appearance of the power supply
Main features of the SAMSUNG UE40H7000 device:
Installed matrix (LED panel) CY-GH040CSLV5V.
The matrix control uses the Timing Controller (T-CON) LSF400HF04.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a 7014X PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE40H7000 TV are generated by the BN44-00709A power module, or its analogs using S3051 (PFC), FA6A01N (FA5760N) microcircuits.
MainBoard - the main board (motherboard) is a BN41-02156A module, using CPU chips: SEMS-31, SPI-FLASH: 25Q40, EEPROM: 24C512 and others.
The tuner BN40-00288A provides the reception of television programs and tuning to channels.
