Thursday 2 January 2020

REPAIR / SERVICING TV SAMSUNG UE32C6000RW

Technical description and composition of the SAMSUNG UE32C6000RW TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32C6000RW UE32C6000
Chassis / Version: N96A / SQ01
Panel: LTF320HF02
LED backlight: LJ64-02408A / B SLED 2010SVS32_F120HZ_38
T-CON: S120APM4C4LV0.4
LED driver (backlight): integrated into PSU
PWM LED driver: SELC2010
Power Supply (PSU): BN44-00355A PD37AF1E_ZSM
PWM Power: ICE3BR1765J (Standby), UCC25600
MOSFET Power: FQPF9N50CF
MainBoard: BN41-01444B BN94-03364S
IC MainBoard: WT61P802, 24C02, 24C256
Tuner: BN40-00187A
Control: IR: BN96-13047F BN41-01390a
Technical Specifications UE32C6000
SAMSUNG UE32C6000RW
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32C6000RW does not turn on at all and does not show any signs of operability. Does not blink indicators and does not respond to control buttons.
With such manifestations, in most cases, the BN44-00355A power module is faulty. It is necessary to measure its output supply voltages, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
The standby power converter assembled on the ICE3BR1765J (Standby) PWM controller should be checked first.
In case of breakdowns of the diodes in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the 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, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback.
PWM chips ICE3BR1765J, UCC25600, in the absence of external damage and short circuit between the terminals, are checked by replacement.
- 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.
In such cases, the most likely malfunction of the 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 indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
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, you should update or replace the software (software).
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 voltage at the terminals of the tuner BN40-00187A. 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.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair to professionals with sufficient experience in the repair of electronic equipment.

Service manual -----------> SAMSUNG UE32C6000RW Chassis N96A

FIRMWARE FOR  WT61P802 -----------> SAMSUNG LE32C630 Weltrend WT61P802.

FIRMWARE FOR  WT61P802 -----------> SAMSUNG UE32C6000 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 UE32C6000RW device:
Installed matrix (LED-panel) LTF320HF02.
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 UE32C6000RW television are generated by the BN44-00355A power supply module or its analogs using ICE3BR1765J (Standby), UCC25600 microcircuits and FQPF9N50CF type power switches.
MainBoard - the main board (motherboard) is a BN41-01444B module, using WT61P802, 24C02, 24C256 microcircuits, and others.
The tuner BN40-00187A 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