Technical description and composition of the SAMSUNG LE46C530F1W TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE46C530F1W LE46C530
Chassis / Version: N82A
Panel: LFT400HM01
Inverter (backlight): SSB400_12V01
PWM Inverter: LX6503
Power Supply (PSU): BN44-00340B
PWM Power: FAN7530, LX6503AID, STR-W6052S
MOSFET Power: K8A50D, R5009FNX, F10UP60S
MainBoard: BN41-01331A BN94-03391K
IC MainBoard: WT61P802, SETD-70, K4T1G164QE-HCF8, KFG1G16U20K, NTP-7300S
Tuner: BN40-00173A
Specifications LE46C530
SAMSUNG LE46C530F1W
General repair guidelines for TV LCD
Possible manifestations of defects
- The SAMSUNG LE46C530F1W TV does not turn on and does not show any signs of operability at all. There is no reaction to the remote control and control buttons from the front panel.
With similar manifestations, in some cases, the BN44-00340B power module is faulty. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches (K8A50D, R5009FNX, F10UP60S) and rectifier diodes of the converters for possible 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 chips FAN7530, LX6503AID, STR-W6052S are usually checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, 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. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are in good working condition, then you need to check the converter keys and the secondary windings of the transformers.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during operations, and after their completion, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN41-01331A 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 cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - WT61P802, SETD-70, K4T1G164QE-HCF8, KFG1G16U20K, NTP-7300S which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before changing the tuner BN40-00173A, if it is not possible to tune to television channels, make sure that there are supply voltages, which must be measured at the corresponding terminals of the tuner and checked for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
We recommend LE46C530F1W TV owners to be repaired only by qualified specialists with the necessary work experience! Attempts to repair it yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
SCHEMATIC -------->< Samsung Chassis N82A.
FOR MODELS -------->> Samsung LE32C53***, LE37C53***, LE40C53***, LE46C53***, LE32C57***, LE37C57***, LE40C57***, LE46C57***, LE32C55***, LE37C55***, LE40C55***, LE46C55***, LE26C45***, LE32C45***
The appearance of the MainBoard BN41-01331A is shown in the figure below:BN41-01331A
BN41-01331A can be used in TVs:
SAMSUNG LE32C550J1W LE32C550 (Panel LTF320HM01), SAMSUNG LE46C530F1W LE46C530 (Panel LFT400HM01).
The appearance of the power supply
Main features of the SAMSUNG LE46C530F1W device:
Installed matrix (LCD panel) LFT400HM01.
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 LE46C530F1W TV are generated by the BN44-00340B power supply module or its analogs using FAN7530, LX6503AID, STR-W6052S microchips and power switches of the K8A50D, R5009FNX, F10UP60S type.
MainBoard - the main board (motherboard) is a BN41-01331A module, using microchips WT61P802, SETD-70, K4T1G164QE-HCF8, KFG1G16U20K, NTP-7300S and others.
The tuner BN40-00173A provides the reception of television programs and tuning to channels.
