Technical description and composition of the SAMSUNG UE55ES8005 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE55ES8005
Chassis / Version: U81A
Panel: LTJ550HQ30-B
T-CON: BN95-00712A (BN41-01790C)
LED driver (backlight): integrated into PSU
PWM LED driver: SLC5012M (MAP3312B), SLC9012M (MAP9101)
MOSFET LED driver: KF9N25D
Power Supply (PSU): BN44-00523B PD55B2Q_CDY
PWM Power: SPC7011F (FA5695N), STR2A153D, UCC25600
MOSFET Power: MDF11N60
MainBoard: BN41-01800A BN94-05570X
IC MainBoard: SDP1101, KLM2G1HE3F, RTL8201F; TAS5735; Si9587CNUC
Tuner: BN40-00238A
Technical Specifications UE55ES8005
SAMSUNG UE55ES8005
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE55ES8005 does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
With similar manifestations, in some cases, the BN44-00523B power module is faulty. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of power switches (MDF11N60) of converters and rectifier diodes 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 mains fuse usually breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode, or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers SPC7011F (FA5695N), STR2A153D, UCC25600, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
Often in such cases, there is no LED backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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 turn on, the indicator indicates standby or operating mode, 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). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements SDP1101, KLM2G1HE3F, RTL8201F; TAS5735; Si9587CNUC. 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 voltages at the terminals of the tuner BN40-00238A. 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.
TV users and owners need to remember that attempts to independently repair a SAMSUNG UE55ES8005 TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
SCHEMATIC MANUAL --------------------> SAMSUNG UE40ES80**, UE46ES80** UE55ES80** UE65ES80** CHASSIS U81A.
PSU SCHEMATIC ---------------------------> BN44-00523B
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 UE55ES8005 device:
Installed matrix (LED panel) LTJ550HQ30-B.
The matrix control uses the Timing Controller (T-CON) BN95-00712A.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by a PWM controller SLC5012M (MAP3312B), SLC9012M (MAP9101). 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 UE55ES8005 television are generated by the BN44-00523B power supply module or its analogs using microchips SPC7011F (FA5695N), STR2A153D, UCC25600 and power switches of the MDF11N60 type.
MainBoard - the main board (motherboard) is a BN41-01800A module, using microchips SDP1101, KLM2G1HE3F, RTL8201F; TAS5735; Si9587CNUC and others.
The tuner BN40-00238A provides the reception of television programs and tuning to channels.
