Technical description and composition of the SAMSUNG LE40C530F1W TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE40C530F1W
Chassis / Version: SQ01
Panel: LTF400HM01
T-CON: F60MB4C2LV0.6, LAU4041X1A-Q, MAX9591, MAX17122, MAX17121E, 24C64WP
Inverter (backlight): SSB400_12V01 REV0.3
PWM Inverter: LX6503
Power Supply (PSU): BN44-00340B
PWM Power: STR-W6052S, LX6503AID, FAN7530 (PFC)
MainBoard: BN41-01331B // BN41-01536B
IC MainBoard: CPU: SEMS12; Scaler: SII92287BCNU; DRAM: 4T1G164QE-H; NAND Flash: KFG1G16U2C; EEPROM: ATMLH004 2EB1; SOUND: NTP-7300S;
Tuner: DTOS40CVL081A BN40-00173A // BN40-00202A
Control: Remote: BN59-01005A, IR: BN96-13022B (BN41-01382A)
Specifications LE40C530
SAMSUNG LE40C530F1W
General repair guidelines for TV LCD
Any repair of electronic equipment begins with a careful external inspection of the device and troubleshooting. In this case, you should carefully examine all the elements of the SAMSUNG LE40C530F1W TV, both internal and external. Often, based on certain external signs, it is possible to draw some conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
If the LE40C530F1W does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, most likely in this case the l40F1 1.2 power module is faulty. If the mains fuse is broken in the power supply, in most cases a breakdown of the power switch is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason to be looked for by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip STRW6052S can also cause a breakdown of the power switch of the converter.
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
If the SAMSUNG LE40C530F1W TV does not have an image, but there is sound, the malfunction should be sought in the backlight lamp power converter (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply) for an overstated ESR.
Repairing the inverter is difficult because in case of any malfunction or emergency, even with uneven wear of the lamps, a protection is triggered, which turns it off for fire safety. Diagnostics become impossible and protection needs to be disabled.
It should be remembered that in such cases there is a risk of failure of the power elements of the inverter and to take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Repair of the DTOS40CVL081A motherboard must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
It should be remembered! Attempts to repair the SAMSUNG LE40C530F1W TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
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DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> PSU SCHEMATICS ---------> BN44-00340B Power Supply schematic diagram.
The appearance of the MainBoard BN41-01331B is shown in the figure below:BN41-01331B
BN41-01331B can be used in TVs:
SAMSUNG LA32C450 (Panel LFT320AP08), SAMSUNG LA32C450E1D (Panel LTF320AP08 A10), SAMSUNG LE26C450E1WXRU (Panel LTF260AP04), SAMSUNG LE32C530F1 LE32C53051F5W5405L Panel, LTF320HMF150, SAML5505F150, Panel LTF320HMF150
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the BN44-00340B module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the FAN7530 PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the mains capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the SAMSUNG LE40C530F1W device:
Installed matrix (LCD panel) LTF400HM01.
The matrix control uses the Timing Controller (T-CON) F60MB4C2LV0.6.
The SSB400_12V01 inverter is used to power the backlight, controlled by the LX6503 PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG LE40C530F1W TV are generated by the BN44-00340B power module or its analogs using the STR-W6052S, LX6503AID, FAN7530 (PFC) microcircuits.
MainBoard - the main board (motherboard) is a BN41-01331B module, using CPU chips: SEMS12; Scaler: SII92287BCNU; DRAM: 4T1G164QE-H; NAND Flash: KFG1G16U2C; EEPROM: ATMLH004 2EB1; SOUND: NTP-7300S; and others.
Tuner DTOS40CVL081A BN40-00173A // BN40-00202A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF400HM01
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Frequency: 60Hz
