Technical description and composition of the SAMSUNG UE26C4000PW TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE26C4000PW UE26C4000
Chassis / Version: N92B
Panel: T260HAE1-DB
LED backlight: LMB-2160BM11
T-CON: V206B3-XC06 (V206B03-P06 REV.C2), LVDS: CM1685A; TPS65161 Eeprom: U4 = 24C128 U8 = 24C02
LED driver (backlight): integrated into PSU
PWM LED driver: BB0533GP, A358
Power Supply (PSU): BN44-00349B - PDP32AF0E_ZDY
PWM Power: STR-W6052S, Q0565R
MOSFET Power: 9474GM, AO4498E
MainBoard: BN41-01548A
IC MainBoard: CPU: SEMS18 DNIE 1025B-LF, SUB: WT61P802, Eeprom: 24C256, 24C02, Sound: NTP-7300S
Tuner: DTOS40FVH082A
Technical Specifications UE26C4000
SAMSUNG UE26C4000PW
General repair guidelines for TV LCD LED
Malfunctions of the power module BN44-00349B - PDP32AF0E_ZDY can be expressed in different ways, for example, SAMSUNG UE26C4000PW does not turn on at all and the control lights on its front panel do not light up and do not blink, there are no signs of operability. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself STRW6052S, Q0565R ICM820 = 43A QM820 = 9474GM A18406 QM821 = 4498E DA0F16 may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuit.
If, when you turn on the TV, the image appears and immediately disappears, or is missing initially when you turn on, but the sound has other functions that work, there is a high probability of a malfunction of the display backlight LEDs or the LED driver (power converter for the T260HAE1-DB panel backlight assembly).
In case of breaks in the LED circuit, a complete disassembly of the panel is required, the LEDs are checked for breakage, as well as the reliability of the connections in the connectors and the rations of the terminals.
It is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V for them. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED, if you connect the probes in the forward direction, the red probe to the anode, and the black to the cathode. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as a health indicator. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
On the BN41-01548A motherboard, in case of a malfunction, you should first check the operation of all the stabilizers and power converters of the microcircuits, and also, if necessary, update the software (software).
In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its CPU chips: SEMS18 DNIE 1025B-LF, SUB: WT61P802, Eeprom: 24C256, 24C02, Sound: NTP-7300S and other possible faulty components . Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
The malfunction of the tuner DTOS40FVH082A is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of repair of electronic equipment.
SCHEMATIC ------------> Chassis: N92B; Model: UE19C4000PW, UE22C4000PW, UE26C4000PW.
The appearance of the MainBoard BN41-01548A is shown in the figure below:BN41-01548A
BN41-01548A can be used in TVs:
SAMSUNG UE22C4000PW UE22C4000 (Panel T216HAE1-DB), SAMSUNG UE26C4000PW UE26C4000 (Panel T260HAE1-DB).
The appearance of the power supply
Main features of the SAMSUNG UE26C4000PW device:
The matrix (LED panel) T260HAE1-DB is installed.
The matrix control uses the Timing Controller (T-CON) V206B3-XC06.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by a PWM controller BB0533GP, A358.
The necessary supply voltages for all nodes of the SAMSUNG UE26C4000PW television are generated by the BN44-00349B power supply module or its analogs using STR-W6052S, Q0565R microcircuits and 9474GM, AO4498E type power switches.
MainBoard - the main board (motherboard) is a BN41-01548A module using CPU chips: SEMS18 DNIE 1025B-LF, SUB: WT61P802, Eeprom: 24C256, 24C02, Sound: NTP-7300S and others.
Tuner DTOS40FVH082A provides the reception of television programs and tuning to channels.