Technical description and composition of the SAMSUNG LE46C650 TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE46C650 LE46C650L1W
Chassis / Version: N84A
Panel: T460HW03 VK
Lamp backlight: 14 Lamp CCFL
T-CON: S120APM4C4LV0.4 BN81-04158A
Inverter (backlight): 4H.V2358.591
Power Supply (PSU): BN44-00341A
PWM Power: FAN7530, FSGM0465R, LX6503A
MOSFET Power: FDPF12N50UT
MainBoard: BN41-01443C BN94-03755R
IC MainBoard: DRAM: K4T511630I-HCE7, EEPROM: 24C256
Tuner: BN40-00173A
Specifications LE46C650
SAMSUNG LE46C650
General repair guidelines for TV LCD
Possible malfunctions
- SAMSUNG LE46C650 does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
With such manifestations, in some cases, the BN44-00341A power module is faulty. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches and rectifier diodes of the converters for the probability of a short circuit.
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 mains 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 circuits STR-W6052 are usually checked by replacing with new ones, or with known good ones.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
These manifestations can be triggered by a power supply module, or by inverter defects, as well as a 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 powering the inverter, you should ring in its converter power keys for breakdown and the secondary windings of 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 enter the operating mode, does not respond to the remote control. The indicator on the front panel lights up constantly or blinks.
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). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements DRAM: K4T511630I-HCE7, EEPROM: 24C256. BGA chip malfunctions are usually easy to detect by warming up.
The malfunction of the tuner BN40-00173A is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Once again, remind users! Attempts to self-repair a SAMSUNG LE46C650 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
Service manual --------------> SAMSUNG LE32C63*, LE37C63*, LE40C63*, LE46C63*, LE32C65*, LE37C65*, LE40C65*, LE46C65*, LE55C65*, LE32C67*, LE37C67*, LE40C67*, LE46C67*, LE55C67* Chassis N84A.
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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 LE46C650 device:
Installed matrix (LCD panel) T460HW03 VK.
The matrix control uses the Timing Controller (T-CON) S120APM4C4LV0.4.
To power the backlight used inverter 4H.V2358.591.
The necessary supply voltages for all nodes of the SAMSUNG LE46C650 TV are generated by the BN44-00341A power module or its analogs using FAN7530, FSGM0465R, LX6503A microcircuits and power switches of the FDPF12N50UT type.
MainBoard - the main board (motherboard) is a BN41-01443C module using DRAM chips: K4T511630I-HCE7, EEPROM: 24C256 and others.
The tuner BN40-00173A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T460HW03 VK
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA3, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Surface: Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 6000: 1
Display Colors: 1.07B (10-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 120Hz
Lamp Type: 14 pcs CCFL Embedded (Balance board)
Signal Interface: LVDS (4 ch, 10-bit), 82 pins
Voltage: 12.0V