Technical description and composition of the SAMSUNG UE46F6800 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE46F6800 UE46F6800AB
Chassis / Version: VER: TH01
Panel: CY-GF460CSLV4V
T-CON: BN41-01939B
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00623B
MainBoard: BN41-01958A BN94-06226K
IC MainBoard: CPU: SEMS30, SPI FLASH: W25Q40, SDRAM: K4B2G1646E
Tuner: BN40-00262A
Technical Specifications UE46F6800
SAMSUNG UE46F6800
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The SAMSUNG UE46F6800 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.
With similar manifestations, in some cases, the BN44-00623B power module is faulty. It is necessary to measure its output voltages and, if they are absent, to check for short-circuit probabilities in the converters, power switches and rectifier diodes.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
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 microcircuits are usually checked by replacement with new ones, or obviously working.
- There is no image, but there is sound and all the other functions of the TV work. The image sometimes for a second appears immediately after turning on and disappears.
As a rule, in such cases there is no display backlight. Often the cause is a malfunction of the LEDs (open circuit, short circuit ...), or the connectors of the strips (strings), less often the LED driver is malfunctioning.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- 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 BN41-01958A 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). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - CPU: SEMS30, SPI FLASH: W25Q40, SDRAM: K4B2G1646E. Defective components should be replaced.
If the TV works normally from external devices, but does not tune into television channels, the tuner BN40-00262A may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Attention to users! Self-repair of a SAMSUNG UE46F6800 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
The appearance of the MainBoard BN41-01958A is shown in the figure below:BN41-01958A
BN41-01958A can be used in TVs:
SAMSUNG UE39F5500 UE39F5500AK (Panel HF390BGM-C1), SAMSUNG UE32F5300AK (Panel HF320BGA-B1), SAMSUNG UE32F6200 UE32F6200AK (Panel CY-HF320BGLV2V), SAMSUNG UE42F5500AK (Panel HF420BGA-B1), SAMSUNG UE32F4500AK (Panel HF32AGH-R1), SAMSUNG UE32F5500AK UE32F5500AW (Panel HF320BGA-B1), SAMSUNG UE40F6400 UE40F6400AK (Panel CY-HF400CSLV2V), SAMSUNG UE42F5300AK (Panel CY-HF420BGAV1V), SAMSUNG UE32F6400AK UE32F6400 (Panel HF320CSA-B1), SAMSUNG UE39F5300AK UE39F5300 (Panel HF390BGM-C1), SAMSUNG UE46F6200AK (Panel CY-HF460BGLV2V), SAMSUNG UE46F6400AK (Panel СY-HF460CSLV2V), SAMSUNG UE46F6540AB (Panel CY-GF460CSLV3V), SAMSUNG UE40F6540AB (Panel CY-GF400CSLV3V), SAMSUNG UE40F6650 UE40F6650AB (Panel CY-GF400CSLV1V), SAMSUNG UE32F6540 (Panel CY-HF320CSLV3V), SAMSUNG UE46F5300 UE46F5300AK (Panel CY-HF460BGLV1V), SAMSUNG UE32F6800 UE32F6800AB (Panel CY-HF320CSLV1V).
The appearance of the power supply
Main features of the SAMSUNG UE46F6800 device:
Installed matrix (LED panel) CY-GF460CSLV4V.
The matrix control uses the Timing Controller (T-CON) BN41-01939B.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE46F6800 TV is carried out by the power module BN44-00623B, or its analogues.
MainBoard - the main board (motherboard) is a BN41-01958A module, using CPU chips: SEMS30, SPI FLASH: W25Q40, SDRAM: K4B2G1646E and others.
The tuner BN40-00262A provides the reception of television programs and tuning to channels.
