Technical description and composition of the SAMSUNG UE40ES8007U TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40ES8007U UE40ES8007
Chassis / Version: U81A / Ver: UE03
Panel: LTJ400HL14-L
LED backlight: LED EDGE 7032 6V 180mA
T-CON: BN41-01790 240HZ_TCON; TPS65167, K4B1G1646G-BCH9,
LED driver (backlight): integrated into PSU
PWM LED driver: SLC5012M (MAP3312B)
MOSFET LED driver: KF9N25D
Power Supply (PSU): BN44-00522B PD46B2Q_CDY
PWM Power: UCC25600, SPC7011F (PFC = FA5695N), STR2A153D (Standby = SQD2011K)
MOSFET Power: TK8A50D
MainBoard: BN41-01800B BN94-06124A
IC MainBoard: RTL8201F; TAS5735; Si9587CNUC; SDP1101
Tuner: BN40-00238B DNTD243VH144AA
Control: WIFI: BN96-21431B WIBT30A
Appearance
SAMSUNG UE40ES8007U
General repair guidelines for TV LCD LED
Possible malfunctions
- The SAMSUNG UE40ES8007U 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.
In such cases, the fault should be sought first in the BN44-00522B power supply module. It is necessary to measure its output voltages, and if they are absent, check the operability of the power switches (TK8A50D) of the converters and rectifier diodes for a short circuit probability.
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 mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) UCC25600, SPC7011F (PFC = FA5695N), STR2A153D (Standby = SQD2011K), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- 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
In some of these cases, a malfunction is caused by a lack of display 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 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 BN41-01800B motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update or replace the software (software). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the RTL8201F elements; TAS5735; Si9587CNUC; SDP1101. BGA chip malfunctions are usually easy to detect by warming up.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the tuner BN40-00238B DNTD243VH144AA. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
We recommend the owners of the UE40ES8007U TV for repair only to qualified specialists with the necessary work experience! Attempts to repair it yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
SCHEMATIC MANUAL-----> SAMSUNG UE40ES80**, UE46ES80** UE55ES80** UE65ES80** CHASSIS U81A.
SCHEMATIC OF PSU --------------> Power supply BN44-00522B
The appearance of the MainBoard BN41-01800B is shown in the figure below:BN41-01800B
BN41-01800B can be used in TVs:
SAMSUNG UE40ES8007U UE40ES8007 (Panel LTJ400HL14-L), SAMSUNG UE40ES7507 UE40ES7507U (Panel LTJ400HL14-L), SAMSUNG UE65ES8005 (Panel CY-LE650DSA V1C).
The appearance of the power supply
Main features of the SAMSUNG UE40ES8007U device:
Installed matrix (LED-panel) LTJ400HL14-L.
The matrix control uses the Timing Controller (T-CON) BN41-01790.
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 KF9N25D type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40ES8007U TV are generated by the BN44-00522B power supply module or its analogs using UCC25600, SPC7011F (PFC = FA5695N), STR2A153D (Standby = SQD2011K) microcircuits and TK8A50D type power switches.
MainBoard - the main board (motherboard) is a BN41-01800B module, using RTL8201F chips; TAS5735; Si9587CNUC; SDP1101 and others.
The tuner BN40-00238B DNTD243VH144AA provides the reception of television programs and tuning to channels.
