Technical description and composition of the SAMSUNG UE40EH5307K TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40EH5307K
Chassis / Version: U71A
Panel: LTJ400HM08-L
LED backlight: D1GE-400SCB-R3 (12.04.09) 40-3535 LED-60EA-L / R
T-CON: BN41-01797A LSJ400HM0-S
LED driver (backlight): integrated into PSU; SHORT 260mA, OPEN 289mA
PWM LED driver: SLC2012M
Power Supply (PSU): PSLF930C04A BN44-00490A
PWM Power: SQD2011K (Standby), SPC7011F (PFC), FSFR1700XS
MainBoard: BN41-01812A BN94-05731D
IC MainBoard: CPU: SEMS27; NAND FLASH KLM2G1HE3F-B001; EEPROM: 24C256; SDRAM K4B2G1646C-HCK0
Tuner: DNTS403EL144AA BN40-00239B
Control: Remote: AA59-00582A, IR: BN41-01840B
Appearance
SAMSUNG UE40EH5307K
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular SAMSUNG UE40EH5307K, it is advisable to start with a careful external examination of internal and external elements. A visible physical change in some components can sometimes suggest a further troubleshooting direction. If ring cracks are detected in the soldering of the terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of the already known typical malfunction.
In cases where the SAMSUNG UE40EH5307K TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds or any signs of operability when turning on, the PSLF930C04A BN44-00490A power supply module is most likely to be faulty or there is no standby power. In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is checked by replacing it with a known good one.
If the SAMSUNG UE40EH5307K does not have an image, but there is sound, the LTJ400HM08-L panel backlight LEDs or their power converter may malfunction.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
Repair of the motherboard BN41-01812 A BN94-05731D must begin with the diagnosis and verification of all linear stabilizers and power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: SEMS27; NAND FLASH KLM2G1HE3F-B001; EEPROM: 24C256; SDRAM K4B2G1646C-HCK0 requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
The malfunction of the tuner DNTS403EL144AA BN40-00239B is established after checking the software and all the supply voltages at its terminals.
Attention to users! Self-repair of a SAMSUNG UE40EH5307K TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC MANUAL ----------------> Samsung Chassis: U71A, U71B Model: UE32EH5****, UE22ES5****, UE37EH5****, UE19ES4****, UE40EH5****, UE46EH5****, UE26EH4****, UE32EH4****.
VARIANT SAMSUNG UE40EH5307K Ver: HS02; Panel: CY-DE400BGSV1L; T-con: CPWBX RUNTK DUNTK 5246TP ZZ;
PSU: BN44-00498A PD46AV1_CSM PSLF930C04A;
Led Backlight: 40-3535LED-60EA-R D1GE-400SCB--R3(12,04,09) и 40-3535LED-60EA-L D1GE-400SCA--R3(12,04,09), BN96-21486a (BN41-01824a);
OR
Led Backlight: SAMSUNG 2012SVS40 3228 RIGHT06 REV1.5 120412, SAMSUNG 2012SVS40 3228 LEFT06 REV1.5 120412, BN41-01824a BN96-21486A;
IR: BN96-22413J (BN41-01840B); Remote: AA59-00582A.
TYPE Model: UE40EH5307R, Panel: LE400BGSV1L-B2, T-CON: SHARP 5246TP ZZ, Main: BN41-01812A, Power: BN44-00502A.
The appearance of the MainBoard BN41-01812A is shown in the figure below:BN41-01812A
BN41-01812A can be used in TVs:
SAMSUNG UE32EH5300P (Panel DE320BGM-C1 ), SAMSUNG UE40ES6307U (Panel LTJ400HV05-L), SAMSUNG UE40ES5537K (Panel CY-LE400BGSV1L), SAMSUNG UE32ES5557K (Panel LE320BGM-C1), SAMSUNG UE40EH5307K (Panel LTJ400HM08-L), SAMSUNG UE37ES6307U (Panel LE370CSA-C1), SAMSUNG UE32ES5500 UE32ES5500W (Panel LE320BGM-C1), SAMSUNG UE32ES5530W UE32ES5530 (Panel LE320BGM-C1), SAMSUNG UE32ES5507K UE32ES5507V (Panel LE320BGM-C1), SAMSUNG UE32ES5537K (Panel LE320BGM-C1), SAMSUNG UE40ES5530W UE40ES5530 (Panel CY-LE400BGSV1L), SAMSUNG UE40ES6100W (Panel LTJ400HV05-L), SAMSUNG UE32EH5300W UE32EH5300 (Panel DE320BGM-C1), SAMSUNG UE32EH5307K UE32EH5307 (Panel DE320BGM-C1), SAMSUNG UE55ES6100W (Panel LTJ550HW08-L), SAMSUNG UE46ES6307U (Panel LTJ460HW05-L), SAMSUNG UE40EH5300W (Panel LTJ-400HM08-L), SAMSUNG UE46ES6100W UE46ES6100 (Panel LTJ460HW05-L), SAMSUNG UE37ES6100W (Panel LE370CSA-C1), SAMSUNG UE50ES5700 UE50ES5700SXZG (Panel LE500BGA-B2), SAMSUNG UE40ES5507K UE40ES5507 (Panel LE400BGA-B1), SAMSUNG UE46EH5300 UE46EH5300W (Panel LTJ460HN05-L), SAMSUNG UE32ES6307 UE32ES6307U (Panel LE320CSM-C1), SAMSUNG UE50ES5507K UE50ES5507 (Panel LE500BGA-B2), SAMSUNG UE40ES5557K UE40ES5557 (Panel LE400BGA-B1), SAMSUNG UE46ES6200 (Panel LTJ460HW05-C), SAMSUNG UE32ES6100 UE32ES6100W (Panel LE320CSM-C1), SAMSUNG UE40ES5500 UE40ES5500W (Panel LTJ400HM09-L), SAMSUNG UE32ES5550 UE32ES5550W (Panel LE320BGM-C1).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the PSLF930C04A module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the SPC7011F 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 UE40EH5307K device:
Installed matrix (LED-panel) LTJ400HM08-L.
The matrix control uses the Timing Controller (T-CON) BN41-01797A.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the SLC2012M PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE40EH5307K TV are generated by the PSLF930C04A power supply module or its analogs using SQD2011K (Standby), SPC7011F (PFC), FSFR1700XS microcircuits.
MainBoard - the main board (motherboard) is a BN41-01812A module, using CPU chips: SEMS27; NAND FLASH KLM2G1HE3F-B001; EEPROM: 24C256; SDRAM K4B2G1646C-HCK0 and others.
The tuner DNTS403EL144AA BN40-00239B provides the reception of television programs and tuning to channels.
Information from an alternative source:
SAMSUNG UE40EH5307K
Panel Type (Matrix): LTJ400HM08-L
Motherboard: BN94-05731D BN41-01812A, Tuner: DNTS403EL144AA BN40-00239B
T-con: BN41-01797A LSJ400HM0-S, IR: BN41-01840B BN96-22413J
PSU: PSLF930C04A BN44-00490A
Remote control: AA59-00582A