Wednesday 8 January 2020

REPAIR / SERVICING TV SAMSUNG UE40D6100SWXRU

Technical description and composition of the SAMSUNG UE40D6100SWXRU TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40D6100SWXRU
Chassis / Version: Ver: H308
Panel: LTJ400HV06-L
LED backlight: 124 led, 3V
T-CON: SH120PMB4SV0.3 BN41-01743B; LPF10A1, RT9979, i7959, I7814HS, 4128BWP
LED driver (backlight): with integrated PSU
PWM LED driver: SLC3011M
Power Supply (PSU): BN44-00482B PD46G1_BH
PWM Power: STR-A6152A, SPC7011F (PFC = FA5695N)
MainBoard: BN94-05368B BN41-01604C
IC MainBoard: SDP1001, SDP94, SiI9489ACTUC, WT61P805, 24C512, KFG1GN6W2D, SDIN5D2-2G, K4B1G16646G-BCH9, RTL8201E, TAS5725
Tuner: BN40-00211A DTOS403VH083A
Technical Specifications UE40D6100
SAMSUNG UE40D6100SWXRU
General repair guidelines for TV LCD LED
In cases where the SAMSUNG UE40D6100SWXRU 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 BN44-00482B PD46G1_BH power supply module is most likely faulty or there is no standby power. After checking the mains fuse and power elements of the primary power supply circuit, you should also check for the presence of a short circuit in the loads of the secondary rectifiers.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. 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 PFC SPC7011F PWM controller microcircuit may also cause a breakdown of the power switches of the converter.
In cases where the SAMSUNG UE40D6100SWXRU TV has lost an image, and the sound is there and all the other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the LTJ400HV06-L panel backlight LEDs). When you turn on the TV, the image may appear briefly and disappear. It must be borne in mind that with such manifestations the LEDs themselves also fail.
A malfunction in the backlight circuits often occurs due to a break in the power supply lines of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the soldering of their terminals, as well as the reliability of the connections in the connectors and the soldering of the terminals.
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. By opening the panel, each LED can be checked separately. Usually, Chinese multimeters light up a single 3-volt LED, if you connect probes in the forward direction to it.
In cases of attempts to repair the BN94-05368B motherboard, it is first necessary to check the operability of the linear stabilizers and power converters of its microcircuits and update the software (software).

Main BN94-05368B:
BN94-05368B
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements SDP1001, SDP94, SiI9489ACTUC, WT61P805, 24C512, KFG1GN6W2D, SDIN5D2-2G, K4B1G16646G-BCH9, RTL8201E, TAS5725 requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
If there is no reception of television channels, but the TV is working properly from external devices, first of all, check the voltage of the tuner BN40-00211A DTOS403VH083A and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Owners and users of the SAMSUNG UE40D6100SWXRU television must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!


SCHEMATIC MANUAL -------------> Samsung Chassis: U68A Model: UE**D600*T*, UE**D61**S*, UE**D620*T*, UE**D63**S*

FIRMWARE -----------> SAMSUNG UE40D6100SWXRU Ver: H308, Main: BN94-05368B BN41-01604C, Panel: LTJ400HV06-L


 The appearance of the MainBoard BN94-05368B is shown in the figure below:
BN94-05368B
BN94-05368B can be used in TVs:
SAMSUNG UE40D6100SW (Panel LTJ400HV03-L), SAMSUNG UE40D6100SWXRU (Panel LTJ400HV06-L).
The appearance of the power supply
Main features of the SAMSUNG UE40D6100SWXRU device:
Installed matrix (LED-panel) LTJ400HV06-L.
The matrix control uses the Timing Controller (T-CON) SH120PMB4SV0.3.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SLC3011M PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE40D6100SWXRU TV are generated by the power module BN44-00482B, or its analogs using microcircuits STR-A6152A, SPC7011F (PFC = FA5695N).
MainBoard - the main board (motherboard) is a BN94-05368B module, using SDP1001, SDP94, SiI9489ACTUC, WT61P805, 24C512, KFG1GN6W2D, SDIN5D2-2G, K4B1G16646G-BCH9, RTL8201E, and other TAS chips.
The tuner BN40-00211A DTOS403VH083A provides the reception of television programs and tuning to channels.