SAMSUNG LED
Model: UE40ES6727 UE40ES6727U
Chassis / Version: TE02
Panel: LTJ400HV08-L
LED backlight: BN96-21711A, BN96-21712A - D-7032LED-MCPCB-L / R
T-CON: BN41-01789A LSJ400HV05-S 12_40F120PSL4LV1.1, 12_40F120PSR4LV1.1
LED driver (backlight): integrated into PSU
PWM LED driver: SLC5012M
MOSFET LED driver: KF9N25D
Power Supply (PSU): BN44-00520C PD46B1QE_CDY
PWM Power: SQD2011K (Stb), SPC7011F (PFC), UCC25600
MOSFET Power: TK8A50D
MainBoard: BN41-01807A BN94-05857K
IC MainBoard: WT61P805, KLM2G1HE3F-B001, K4B2G1646C-HCK0, NTP7412S
Tuner: BN40-00236A
Control: WIFI: WIDT20R, BLUETOOTH: BN96-21431C WIBT30A
Technical Specifications UE40ES6727
SAMSUNG UE40ES6727
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE40ES6727 TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
In some of these cases, a fault is detected in the BN44-00520C power module. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (TK8A50D) and rectifier diodes in the converters for a short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key 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 SQD2011K (Stb), SPC7011F (PFC), UCC25600 are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn on and immediately disappears
Often in such cases, there is no LED backlight. 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 lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN-junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the BN41-01807A 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). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - WT61P805, KLM2G1HE3F-B001, K4B2G1646C-HCK0, NTP7412S which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before replacing the tuner BN40-00236A, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Attention to users! Self-repair of a SAMSUNG UE40ES6727 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
SCHEMATIC MANUAL -------------> SAMSUNG UE40ES6727U Chassis U78A/U79A Model: UE**ES61***, UE**ES63***, UE**ES65***, UE**ES67***, UE**ES68***.
The appearance of the MainBoard BN41-01807A is shown in the figure below:BN41-01807A
BN41-01807A can be used in TVs:
SAMSUNG UE40ES6550S (Panel LTJ400HV05-V), SAMSUNG UE46ES6547U UE46ES6547 (Panel LTJ460HW06-L), SAMSUNG UE40ES7207U (Panel LTJ400HL10-L), SAMSUNG UE46ES6540 UE46ES6540U (Panel LTJ460HW06-L), SAMSUNG UE40ES6750 MXRU (Panel LTJ400HV08-L), SAMSUNG UE32ES6727U UE32ES6727 (Panel LTJ320HW06-L), SAMSUNG UE40ES6757 UE40ES6757M (Panel LTJ400HV08-L), SAMSUNG UE32ES6550 UE32ES6550S (Panel LE320CSM-C1), SAMSUNG UE40ES6540S (Panel LTJ400HV07-L), SAMSUNG UE55ES6760 UE55ES6760SXZG (Panel LTJ550HW10-B), SAMSUNG UE32ES6540 UE32ES6540S (Panel LE320CSM-C1), SAMSUNG UE40ES6727 UE40ES6727U (Panel LTJ400HV08-L), SAMSUNG UE32ES6757M (Panel LE320CSM-C2).
The appearance of the power supply
Main features of the SAMSUNG UE40ES6727 device:
Installed matrix (LED panel) LTJ400HV08-L.
The matrix control uses the Timing Controller (T-CON) BN41-01789A.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the SLC5012M PWM controller. As the power elements of the LED driver, keys of the KF9N25D type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40ES6727 TV are generated by the BN44-00520C power module or its analogs using SQD2011K (Stb), SPC7011F (PFC), UCC25600 microcircuits and TK8A50D type power switches.
MainBoard - the main board (motherboard) is a BN41-01807A module, using microchips WT61P805, KLM2G1HE3F-B001, K4B2G1646C-HCK0, NTP7412S and others.
The tuner BN40-00236A provides the reception of television programs and tuning to channels.
