Technical description and composition of the SAMSUNG LE32C454 TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE32C454 LE32C454E3W
Panel: LTF320AP08
Inverter (backlight): SS1320-4UH01
PWM Inverter: SSI091ASN (24pin)
MOSFET Inverter: AOD4186
Power Supply (PSU): BN44-00338D
PWM Power: FSFR1700US, FAN7530 (PFC), STR-A6052M (Standby)
MOSFET Power: 13N60N, MDS1653
MainBoard: BN41-01536A
IC MainBoard: WT61P802, SEMS18 1027B-LF, K4T1G1640F-BCF8, KFG1G16U2D, ATMLH032 2ECL, NTP-7300S
Tuner: DT0S40FVL082A BN40-00197A // BN40-00202A
Control: IR: BN96-13046D (BN41-01366A)
Technical specifications LE32C454
SAMSUNG LE32C454
General repair guidelines for TV LCD
An external examination of the external and internal elements should be carried out in a timely manner before the start of dismantling operations. Visible damage to the elements can sometimes indicate the direction of the search for the defect even before the start of the necessary measurements. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
If the power supply module BN44-00338D is faulty, the external manifestations may be different, for example, SAMSUNG LE32C454 does not turn on at all and there is no indication of the indicator lights on the front panel. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power key (s) of the converter 13N60N, MDS1653 The complete inoperability of the power supply unit can be caused by a short circuit of the power elements in the primary circuit, followed by an open fuse, or a short circuit in the loads.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM FSFR1700US, FAN7530 (PFC), STR-A6052M (Standby) chips from the manufacturer.
If SAMSUNG LE32C454 does not have an image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working. It must be borne in mind that in cases of inverter protection shutdown (for diagnostic purposes), there is a risk of failure of the power elements of the inverter and special care should be taken. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Repair or diagnostics of the BN41-01536A motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Verification or replacement of elements WT61P802, SEMS18 1027B-LF, K4T1G1640F-BCF8, KFG1G16U2D, ATMLH032 2ECL, NTP-7300S requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
Before changing the tuner DT0S40FVL082A BN40-00197A // BN40-00202A, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Attention to users! Self-repair of a SAMSUNG LE32C454 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATICS ---> Samsung Chassis N82A.
FOR MODELS: Samsung LE32C53***, LE37C53***, LE40C53***, LE46C53***, LE32C57***, LE37C57***, LE40C57***, LE46C57***, LE32C55***, LE37C55***, LE40C55***, LE46C55***, LE26C45***, LE32C45***
BN41-01536A
BN41-01536A can be used in TVs:
SAMSUNG LE37C530F1W (Panel T370HW03 VG xxxxG), SAMSUNG LE37C550J1W (Panel T730HW03), SAMSUNG LE32C454 LE32C454E3W (Panel LTF320AP08), SAMSUNG LE26C454 LE26C454E36004 Panel.
The appearance of the power supply
Main features of the SAMSUNG LE32C454 device:
Installed matrix (LCD panel) LTF320AP08.
The SS1320-4UH01 inverter is used to power the backlight, controlled by the SSI091ASN (24pin) 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 LE32C454 TV are generated by the BN44-00338D power module or its analogs using the FSFR1700US, FAN7530 (PFC), STR-A6052M (Standby) microcircuits and 13N60N, MDS1653 power switches.
MainBoard - the main board (motherboard) is a module BN41-01536A, using microchips WT61P802, SEMS18 1027B-LF, K4T1G1640F-BCF8, KFG1G16U2D, ATMLH032 2ECL, NTP-7300S and others.
Tuner DT0S40FVL082A BN40-00197A // BN40-00202A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF320AP08
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm