Technical description and composition of the SAMSUNG UE55C8000 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE55C8000 UE55C8000XW
Chassis / Version: BN41-01367A
Panel: LTF550HQ03
LED backlight: SLED 2010SVS55 120 / 240HZ_80 ID V1.0
T-CON: 2010_R240S_MB4_1.0
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): BN44-00363A PD55AF2_ZSM PSLF311B02A
PWM Power: PFC, PWM
MOSFET Power: TO-220F
MainBoard: BN41-01367A BN94-02755Z
IC MainBoard: STA369BWS, EM6A9320BIA-4H, K4T1G084QE
Tuner: BN40-00171A
Technical Specifications UE55C8000
SAMSUNG UE55C8000
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE55C8000 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 such cases, the BN44-00363A power supply is usually faulty. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches (TO-220F) and rectifier diodes for a probable 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, PWM, PWM microchips are usually checked by replacing with new ones, or obviously working.
- There is no image, there is sound, all other functions of the TV work. When turned on, the image may sometimes appear for a second.
Often in such cases, there is no LED backlight. The reason may be a break in the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the strings
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, sometimes you can 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 TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the BN41-01367A 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 board (SSB), it is necessary to check the health of its elements - STA369BWS, EM6A9320BIA-4H, K4T1G084QE which may require replacement with new ones. If a 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).
The malfunction of the tuner BN40-00171A 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! For users and owners of UE55C8000 TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
The appearance of the MainBoard BN41-01367A is shown in the figure below:BN41-01367A
BN41-01367A can be used in TVs:
SAMSUNG UE46C7000WW UE46C7000 (Panel LTF460HQ02), SAMSUNG UE40C7000WW UE40C7000 (Panel LTF400HQ02).
The appearance of the power supply
Main features of the SAMSUNG UE55C8000 device:
Installed matrix (LED-panel) LTF550HQ03.
The matrix control uses the Timing Controller (T-CON) 2010_R240S_MB4_1.0.
To power the backlight LEDs, a converter is used, combined with the main board BN41-01367A.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE55C8000 TV is carried out by the BN44-00363A power module, or its analogs using PFC, PWM chips and TO-220F type power switches.
MainBoard - the main board (motherboard) is a BN41-01367A module, using microchips STA369BWS, EM6A9320BIA-4H, K4T1G084QE and others.
The tuner BN40-00171A provides the reception of television programs and tuning to channels.
