Technical description and composition of the SAMSUNG UE40ES8000 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40ES8000 UE40ES8000S
Chassis / Version: U81A
Panel: LTJ400HL08-B // LTJ400HL08-L
LED backlight: Edge LED
T-CON: E88441
LED driver (backlight): integrated into PSU
PWM LED driver: SLC5012M (MAP3312B)
MOSFET LED driver: K8A500D, F9N25
Power Supply (PSU): BN44-00522B
PWM Power: UCC25600, 2A153D (Standby), PC7011F (PFC = FA5695N)
MOSFET Power: MDF11M60 (PFC), K8A50D
MainBoard: BN41-01800A
IC MainBoard: SDP1101, KLM2G1HE3F, RTL8201F; TAS5735; Si9587CNUC
Tuner: BN40-00238B DNTD243VH144AA
Technical Specifications UE40ES8000
SAMSUNG UE40ES8000
General repair guidelines for TV LCD LED
Possible malfunctions
- The SAMSUNG UE40ES8000 TV does not turn on and does not show any signs of turning on, it does not respond to the control buttons or the remote control.
Most likely in this case, the main switching power supply (IIP) BN44-00522B is faulty. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches (MDF11M60 (PFC), K8A50D) and rectifier diodes of the converters for possible 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 circuits UCC25600, 2A153D (Standby), PC7011F (PFC = FA5695N) are usually checked by replacing with new ones, or obviously working.
- There is no image, there is sound, there is a reaction to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can test each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN junction indirectly indicates a LED-a
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights up constantly or blinks.
Repair or diagnostics of the BN41-01800A 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). 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 - SDP1101, KLM2G1HE3F, RTL8201F; TAS5735; Si9587CNUC and failed chips should be replaced 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.
If there is no reception of television channels, but the TV works properly from external devices, first of all, check the voltage of the tuner BN40-00238B DNTD243VH144AA and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Attention to users! Self-repair of a SAMSUNG UE40ES8000 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
SCHEMATIC MANUAL ---------------> SAMSUNG UE40ES80**, UE46ES80** UE55ES80** UE65ES80** CHASSIS U81A.
PSU SHCEMATIC -------------> Power supply BN44-00522B
The appearance of the MainBoard BN41-01800A is shown in the figure below:BN41-01800A
BN41-01800A can be used in TVs:
SAMSUNG UE40ES7507 UE40ES7507U (Panel LTJ400HL14-L), SAMSUNG UE46ES8007U (Panel LTJ460HQ10-L), SAMSUNG UE55ES8000S UE55ES8000 (Panel LTJ550HQ30-B), SAMSUNG UE40ES8000 UE40ES8000S (Panel LTJ400HL08-B), SAMSUNG UE55ES8005 (Panel LTJ550HQ30-B ).
The appearance of the power supply
Main features of the SAMSUNG UE40ES8000 device:
Installed matrix (LED-panel) LTJ400HL08-B or LTJ400HL08-L.
The matrix control uses the Timing Controller (T-CON) E88441.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SLC5012M PWM controller (MAP3312B). As the power elements of the LED driver, keys of the type K8A500D, F9N25 are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40ES8000 television are generated by the BN44-00522B power supply module or its analogs using UCC25600, 2A153D (Standby), PC7011F (PFC = FA5695N) microcircuits and MDF11M60 (PFC), K8A50D type power switches.
MainBoard - the main board (motherboard) is a BN41-01800A module, using microchips SDP1101, KLM2G1HE3F, RTL8201F; TAS5735; Si9587CNUC and others.
The tuner BN40-00238B DNTD243VH144AA provides the reception of television programs and tuning to channels.
