Technical description and composition of the SAMSUNG UE32C6700 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE32C6700 UE32C6700US
Chassis / Version: N96A
Panel: LTF320HF02 (BN07-00858A)
LED backlight: LJ64-02409A LJ64-02408A 109-031-51 EDGE LED
T-CON: S120APM4C4LV0.4
LED driver (backlight): integrated into PSU
PWM LED driver: SELC2010
Power Supply (PSU): BN44-00355A PD37AF1E_ZSM
PWM Power: ICE3BR1765J, UCC25600
MOSFET Power: FQPF9N50CF
MainBoard: BN41-01444B BN94-03406S
IC MainBoard: WT61P802, 24C02, 24C256, KFG8GH6U4M
Tuner: BN40-00187A // BN40-00175A
Technical Specifications UE32C6700
SAMSUNG UE32C6700
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE32C6700 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.
Most often, with such manifestations, the main power module BN44-00355A is found to be faulty. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, check the serviceability of the power switches (FQPF9N50CF) and rectifier diodes for possible breakdown (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 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) ICE3BR1765J, UCC25600, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
Failure in most such cases is detected in the nodes and backlight elements of the LED panel. 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 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 an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-01444B 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). Board repair and replacement of WT61P802, 24C02, 24C256, KFG8GH6U4M microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Before changing the tuner BN40-00187A // BN40-00175A, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Once again, remind users! Attempts to self-repair a SAMSUNG UE32C6700 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
Service manual -------------> SAMSUNG UE32C6700 Chassis N96A (Model: UE**C600*R*, UE**C650*U*, UE**C6700US).
FIRMWARE FOR WT61P802 -------------> SAMSUNG LE32C630 Weltrend WT61P802
The appearance of the MainBoard BN41-01444B is shown in the figure below:BN41-01444B
BN41-01444B can be used in TVs:
SAMSUNG UE32C6000RW UE32C6000 (Panel LTF320HF02); SAMSUNG UE32C6700 UE32C6700US (Panel LTF320HF02 (BN07-00858A))
The appearance of the power supply
Main features of the SAMSUNG UE32C6700 device:
Installed matrix (LED panel) LTF320HF02 (BN07-00858A).
The matrix control uses the Timing Controller (T-CON) S120APM4C4LV0.4.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SELC2010 PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE32C6700 TV are generated by the BN44-00355A power supply module or its analogs using ICE3BR1765J, UCC25600 microchips and power switches of the FQPF9N50CF type.
MainBoard - the main board (motherboard) is a BN41-01444B module, using microchips WT61P802, 24C02, 24C256, KFG8GH6U4M and others.
The tuner BN40-00187A // BN40-00175A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF320HF02
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Display Colors: 16.7M (8-bit)
Frequency: 120Hz
Lamp Type: WLED