Technical description and composition of the SAMSUNG UE46EH6037 TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE46EH6037 K
Panel: LTJ460HW10-L
T-CON: LSJ460HW05-S
LED driver (backlight): integrated into PSU; 265V 289mA
PWM LED driver: SLC3011M, SLC9012M
MOSFET LED driver: 13NM60N, MDD5N40
Power Supply (PSU): BN44-00552A PSLF930C04D PD46CV1_CSM
PWM Power: FSFR1700XS, SPC7011F (PFC = FA5695N), SQD2011K (Standby)
MOSFET Power: 13NM60N (PFC)
MainBoard: BN41-01894A BN94-06876A
IC MainBoard: SPI: 25Q40BV, EEPROM: 24C256
Tuner: BN40-00225A
Technical Specifications UE46EH6037
SAMSUNG UE46EH6037
General repair guidelines for TV LCD LED
Repair of the SAMSUNG UE46EH6037 K XRU TV should begin with a fault diagnosis, which involves a careful inspection of the external and internal elements of the device. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. Electrolytic capacitors of filters with a swollen body, as well as ring cracks or a layer of coal on burned-out resistors formed in the soldered terminals of the heating elements, sometimes tell the repairman the causes of the malfunction and possible consequences.
In the absence of any signs of operability, when the SAMSUNG UE46EH6037 does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV's BN44-00552A power module. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
If the power keys of the pulse converter are not equal, you should pay attention to other elements in their bundling, which may be the result or cause of their breakdown.
Sometimes the SAMSUNG UE46EH6037 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the LTJ460HW10-L panel backlight LEDs converter, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the operability of the electrolytic capacitors of the filter by supplying the LED driver itself, including the PSU.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the lines and connectors.
When trying to identify a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
When repairing an MB board, you need to check its components SPI: 25Q40BV, EEPROM: 24C256. Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating.
The malfunction of the tuner BN40-00225A is established after checking the software and all the supply voltages at its terminals.
Once again, remind users! Attempts to self-repair a SAMSUNG UE46EH6037 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
PSU SCHEMATIC -------------------> Power Supply BN44-00473A.
PSU SCHEMATIC -------------------> Samsung BN44-00520C Power supply
The appearance of the MainBoard BN41-01894A is shown in the figure below:BN41-01894A
BN41-01894A can be used in TVs:
SAMSUNG UE32EH6037K (Panel LTJ320HW10-L), SAMSUNG UE46EH6037 K (Panel LTJ460HW10-L), SAMSUNG UE40EH6037 (Panel LTJ400HV11-L), SAMSUNG UE46EH6030 (Panel LTJ460HW10-V).
PSU Advanced
The power module BN44-00552A is made using the Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced into the power supply by the device. The PFC node is a Step-Up Converter based on a PWM controller SPC7011F = FA5695N, which evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of the increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the SAMSUNG UE46EH6037 device:
Installed matrix (LED panel) LTJ460HW10-L.
The matrix control uses the Timing Controller (T-CON) LSJ460HW05-S.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by a PWM controller SLC3011M, SLC9012M. As power elements of the LED driver, keys of the type 13NM60N, MDD5N40 are used.
The necessary supply voltages for all nodes of the SAMSUNG UE46EH6037 TV are generated by the BN44-00552A power module or its analogs using the FSFR1700XS, SPC7011F (PFC = FA5695N), SQD2011K (Standby) microcircuits, and 13NM60N (PFC) type power switches.
MainBoard - the main board (motherboard) is a BN41-01894A module, using microchips SPI: 25Q40BV, EEPROM: 24C256 and others.
The tuner BN40-00225A provides the reception of television programs and tuning to channels.