Technical description and composition of the SAMSUNG LE40C630 TV, type of panel and applicable modules. The composition of the modules.SAMSUNG
Model: LE40C630 LE40C630K1W
Chassis / Version: SQ01
Panel: LTF400HF16
T-CON: S120APM4C4LV0.4
Inverter (backlight): SSB400_12V01
PWM Inverter: LX6503, LM393F
MOSFET Inverter: 780N09C6S
Power Supply (PSU): BN44-00340A I40F1-ASM
PWM Power: FAN7530 (PFC), STR-W6052S
MainBoard: BN41-01443A BN94-02747E
IC MainBoard: SDP92, WT61P802, K4T1G084QE, K4T51163QG, KFG8GH6U4M, sil9287BCNU
Tuner: BN40-00173A DTOS40CVL081A
Specifications LE40C630
SAMSUNG LE40C630
General repair guidelines for TV LCD
Possible malfunctions
- SAMSUNG LE40C630 TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
Usually with such manifestations, the defect is caused by faulty elements in the main power module BN44-00340A. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for a possible partial or complete breakdown.
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.
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) FAN7530 (PFC), STR-W6052S, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- 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 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 indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the BN41-01443A 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 - SDP92, WT61P802, K4T1G084QE, K4T51163QG, KFG8GH6U4M, sil9287BCNU. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
Before replacing the BN40-00173A DTOS40CVL081A tuner, if there is no tuning for the channels, you must 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
Attention! Users and owners of LE40C630 TVs who do not have the appropriate qualifications, knowledge and experience are strongly advised against self-repair attempts in order to avoid negative consequences that could lead to complete non-repairability of the device.
SCHEMATICS ----------> Chassis N84A.
FOR MODELS:.------------->: LE32C63*, LE37C63*, LE40C63*, LE46C63*, LE32C65*, LE37C65*, LE40C65*, LE46C65*, LE55C65*, LE32C67*, LE37C67*, LE40C67*, LE46C67*, LE55C67*.
The appearance of the MainBoard BN41-01443A is shown in the figure below:BN41-01443A
BN41-01443A can be used in TVs:
SAMSUNG LE40C630 LE40C630K1W (Panel LTF400HF16), SAMSUNG LE37C650L1W LE37C650 (Panel T370HW03 VH), SAMSUNG LE55C650 LE55C650L1W (Panel T546HW01 V.0).
The appearance of the power supply
Main features of the SAMSUNG LE40C630 device:
Installed matrix (LCD-panel) LTF400HF16.
The matrix control uses the Timing Controller (T-CON) S120APM4C4LV0.4.
To power the backlight, an inverter SSB400_12V01 is used, it is controlled by the PWM controller LX6503, LM393F. As power elements of the inverter, keys of the type 780N09C6S are used.
The formation of the necessary supply voltages for all nodes of the SAMSUNG LE40C630 TV is carried out by the BN44-00340A power module, or its analogs using FAN7530 (PFC) microcircuits, STR-W6052S.
MainBoard - the main board (motherboard) is a BN41-01443A module, using microchips SDP92, WT61P802, K4T1G084QE, K4T51163QG, KFG8GH6U4M, sil9287BCNU and others.
The tuner BN40-00173A DTOS40CVL081A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF400HF16-A00
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 885.6x498.15 mm
Surface: Antiglare (Haze 5.5%), Hard coating (2H)
Brightness: 500 cd / m²
Contrast Ratio: 6000: 1
Display Colors: 1.07B (10-bit), CIE1931 72%
Response Time: 15/6 (Tr / Td); 6 (G to G); 8 (MPRT)
Frequency: 120Hz
Lamp Type: 12 pcs CCFL Embedded (Balance board)
Signal Interface: LVDS (4 ch, 10-bit), 82 pins
Voltage: 12.0V