Technical description and composition of the SAMSUNG LE32C650L1W TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE32C650L1W LE32C650
Chassis / Version: N84A
Panel: LTF320HF01
T-CON: S120APM4C4LV0.4
Inverter (backlight): SSI320_4UH01
PWM Inverter: SSI091ASN
MOSFET Inverter: AOD4186
Power Supply (PSU): BN44-00339B P3237F1_AHS
PWM Power: FSFR1700US (PWM resonant), FAN7530 (PFC), STR-A6052 (Standby)
MOSFET Power: SD10N60
MainBoard: BN41-01443C BN94-03772X
IC MainBoard: DRAM: K4T511630I-HCE7, EEPROM: Atmel 24C256
Tuner: BN40-00180A
Control: IR: EBA818-C3 A13226B BN41-01381A
Specifications LE32C650
SAMSUNG LE32C650L1W
General repair guidelines for TV LCD
Possible malfunctions
- The SAMSUNG LE32C650L1W 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 such manifestations, a malfunction is most likely to be detected in the BN44-00339B power supply module. It is necessary to measure its output voltages and, if they are absent, check the serviceability of power switches (SD10N60) and rectifier diodes in the converters for possible breakdown.
In case of any breakdowns 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 more often breaks.
The breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency-setting or damper ones, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM) FSFR1700US (PWM resonant), FAN7530 (PFC), STR-A6052 (Standby), if they do not have visible damage to the case and open fault between the terminals, are usually checked by replacement.
- 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
These manifestations can be triggered by a power supply module, or by inverter defects, as well as distortion of the currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, it is necessary to ring in its converter the power switches for breakdown and the secondary windings of the transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- 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 BN41-01443C 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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - DRAM: K4T511630I-HCE7, EEPROM: Atmel 24C256 and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
Before replacing the BN40-00180A tuner, if there is no tuning to the channels, first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
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.
SCHEMATICS ---> Chassis N84A.
FOR MODELS: : LE32C63*, LE37C63*, LE40C63*, LE46C63*, LE32C65*, LE37C65*, LE40C65*, LE46C65*, LE55C65*, LE32C67*, LE37C67*, LE40C67*, LE46C67*, LE55C67*
PSU SCHEMATICS: Samsung BN44-00339B Power supply.
The appearance of the MainBoard BN41-01443C is shown in the figure below:BN41-01443C
BN41-01443C can be used in TVs:
SAMSUNG LE40C650L1W (Panel LTF400HF15 CHINA), SAMSUNG LE32C650L1W LE32C650 (Panel LTF320HF01), SAMSUNG LE46C650 LE46C650L1W (Panel T460HW03 VK).
The appearance of the power supply
Main features of the SAMSUNG LE32C650L1W device:
Installed matrix (LCD panel) LTF320HF01.
The matrix control uses the Timing Controller (T-CON) S120APM4C4LV0.4.
The SSI320_4UH01 inverter is used to power the backlight, controlled by the SSI091ASN PWM controller. As power elements of the inverter, keys of the AOD4186 type are used.
The necessary supply voltages for all nodes of the SAMSUNG LE32C650L1W TV are generated by the BN44-00339B power supply module or its analogs using the FSFR1700US (PWM resonant), FAN7530 (PFC), STR-A6052 (Standby) microcircuits and SD10N60 power switches.
MainBoard - the main board (motherboard) is a BN41-01443C module using DRAM chips: K4T511630I-HCE7, EEPROM: Atmel 24C256 and others.
The tuner BN40-00180A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF320HF01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 5.5%), Hard coating (2H)
Brightness: 500 cd / m²
Contrast Ratio: 6000: 1
Display Colors: 1.07B (8-bit + Dithering), CIE1931 72%
Frequency: 120Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 82 pins
Voltage: 12.0V
