Technical description and composition of the SAMSUNG UE46C7000WW TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE46C7000WW UE46C7000
Chassis / Version: N79A
Panel: LTF460HQ02
T-CON: 2010_R240S_MB4_1.0.
LED driver (backlight): integrated into PSU
PWM LED driver: HV9963
MOSFET LED driver: FDPF5N50T
Power Supply (PSU): BN44-00375A PD46CF2 REV1.2
PWM Power: ICE2PCS04G, ICE3BR1765J, UCC25600
MOSFET Power: TK8A50D, STF13NM60
MainBoard: BN41-01367A, BN94-02724B
IC MainBoard: STA369BWS, EM6A9320BIA-4H, K4T1G084QE
Tuner: BN40-00171A DTOS30CYH071A
Control: IR Sensor BN41-01453B C7000 Rev 1.7
Technical Specifications UE46C7000
SAMSUNG UE46C7000WW
General repair guidelines for TV LCD LED
Possible malfunctions
- The SAMSUNG UE46C7000WW TV does not turn on, does not respond to the remote control and buttons on the control panel, does not light up or blink indicators.
In such cases, the power source, the BN44-00375A module, sometimes turns out to be faulty. It is necessary to measure its output supply voltages, and in case of their complete or partial absence, check the operability of power switches (TK8A50D, STF13NM60) of converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
First of all, we recommend checking the operation of the standby power converter ICE3BR1765J, made in the same DIP-8 package with a power switch.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And during short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
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 ICE2PCS04G, ICE3BR1765J, UCC25600, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new, or obviously working.
The performance of the PFC node can be indirectly judged by the presence of an increased voltage (380-400V) on the electrolytic capacitor of the filter of the rectifier network.
- 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
As a rule, in such cases there is no display backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V for them. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED if you connect the probes in the forward direction, the red probe to the anode, and the black to the cathode. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as a health indicator. In the event of a LED malfunction, its 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 operating mode, it does not respond to the remote control.
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, you should update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard board - STA369BWS, EM6A9320BIA-4H, K4T1G084QE. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
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 BN40-00171A DTOS30CYH071A and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
We recommend the owners of the UE46C7000WW 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!
Service manual -----------------> SAMSUNG UE46C7000 Chassis N79A. SAMSUNG UE40C7000, UE46C7000, UE55C7000, UE40C8000, UE46C8000, UE55C8000, UE65C800, UA40C7000, UA46C7000, UA55C7000 UA40C8000, UA46C8000, UA55C8000, UA65C8000.
SCHEMATIC OF PSU ---------------> BN44-00375A
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 UE46C7000WW device:
Installed matrix (LED-panel) LTF460HQ02.
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 a power supply, controlled by the HV9963 PWM controller. As power elements of the LED driver, keys of the FDPF5N50T type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE46C7000WW television are generated by the BN44-00375A power supply module or its analogs using ICE2PCS04G, ICE3BR1765J, UCC25600 microcircuits and power switches of the TK8A50D, STF13NM60 type.
MainBoard - the main board (motherboard) is a module BN41-01367A, using microchips STA369BWS, EM6A9320BIA-4H, K4T1G084QE and others.
The tuner BN40-00171A DTOS30CYH071A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF460HQ02
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Surface: Hard coating (2H), Reflection 1.0%
Brightness: 450 cd / m²
Contrast Ratio: 6000: 1
Display Colors: 16.7M (8-bit), CIE1931 80%
Response Time: 4 (G to G)
Frequency: 120Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (4 ch, 10-bit), 82 pins
Voltage: 12.0V