Technical description and composition of the SAMSUNG UE40MU6103U TV, panel type and modules used. The composition of the modules.SAMSUNG LED
Model: UE40MU6103U
Chassis / Version: FA01
Panel: CY-GK040HGLV4V
LED backlight: LM41-00120S, LM41-00120R
LED driver (backlight): integrated into PSU
PWM LED driver: SM1251
Power Supply (PSU): BN44-00806A L40S6_FDY REV1.1
PWM Power: FA6A20N, SPC7011F
MOSFET Power: K8A50D
MainBoard: BN41-02568B BN94-12695L
IC MainBoard: SDP1601, KLM4G1FEPD, 24512FD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M
Tuner: BN40-00331A
Control: WI-FI: WIDT30Q
Specifications UE40MU6103U
SAMSUNG UE40MU6103U
General recommendations for TV LCD LED repair
Possible manifestations of defects
- TV SAMSUNG UE40MU6103U does not turn on, does not respond to the remote control and control panel buttons, does not light or blink indicators.
Most likely in this case, the main switching power supply (SMPS) BN44-00806A is faulty. Its output voltages should be measured and, in their absence, the power switches (K8A50D) and rectifier diodes should be checked for the probability of a short circuit in the converters.
In the event of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) FA6A20N, SPC7011F are usually checked by replacing them with new ones, or known to be working properly.
- There is no image, there is sound, it reacts to the remote control Or the image may appear for a second when turned on and disappear immediately.
The malfunction in most of these cases is found in the nodes and elements of the LED panel backlight. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
It should be remembered that it is not possible to determine an open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then you need to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow opening the LED in the forward direction or dual LEds are used, then the PN transition of the emergency zener diode can indirectly serve as an indicator of serviceability. In the event of a malfunction of the LED-a, the PN-junction of the Zener diode will either be cut off, or broken through in the SC.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
If SAMSUNG UE40MU6103U has no picture, but there is sound, often the display backlight CY-GK040HGLV4V simply does not work. Moreover, in LED TVs, the LEDs inside the panel usually fail, less often the LED driver.
In such cases, you can see a barely noticeable image when the external light hits the screen.
Replacing the LEDs requires disassembling the LCD panel CY-GK040HGLV4V - a process that requires experience and qualifications from the master. We do not recommend doing such work on your own to the owners of TVs and craftsmen who do not have experience in repairing LCD panels
If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV you can see light through the holes in the panel case.
In this case, the panel may also be faulty - damage to strips, loops, for example, as a result of moisture ingress after unsuccessful washing of the screen, the T-CON (Timing Controller) board may be faulty. But the main board MainBoard BN41-02568B often turns out to be faulty, a software failure is also possible.
Then, first of all, you need to check the panel supply voltage, the fuses on the T-CON board, as well as the supply and reference voltages of the column and line drivers - VGH, VGL, Vcom.
If these measurements are within normal limits, it is necessary to trace the passage of LVDS signals from the MainBoard BN41-02568B with an oscilloscope, as well as synchronization signals to the loops with drivers.
Flooded or unsuccessfully washed screens of LED TVs can be restored, in about half of the cases, usually if significant damage has not formed in the loops and panel strips.
Repair or diagnostics of the BN41-02568B motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). When repairing an MB board, you need to check its components SDP1601, KLM4G1FEPD, 24512FD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M. Defective elements should be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.
If you suspect a malfunction of the BN40-00331A tuner, first of all, you need to make sure that the software is correct, as well as the presence of the necessary levels of supply voltages and pulses of data exchange with the processor via the I2C bus on the corresponding terminals of the tuner.
Remember! Attempts to self-repair the SAMSUNG UE40MU6103U TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
The appearance of the MainBoard BN41-02568B is shown in the figure below:
BN41-02568B
External view of the power supply
Main features of the device SAMSUNG UE40MU6103U:
Installed matrix (LED panel) CY-GK040HGLV4V.
A converter combined with a power supply is used to power the backlight LEDs and is controlled by the SM1251 PWM controller.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE40MU6103U TV is carried out by the BN44-00806A power module, or its analogs using FA6A20N, SPC7011F microcircuits and K8A50D power switches.
MainBoard - the main board (motherboard) is a BN41-02568B module, using SDP1601, KLM4G1FEPD, 24512FD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M and others.
Tuner BN40-00331A provides reception of television programs and tuning to channels.
SAMSUNG UE40MU6103U TV with LCD CY-GK040HGLV4V, diagonal size 40 "(102 cm) 16: 9 format. The LCD panel of this model implements the principle of direct backlight display with rear LEDs - Direct LED.
CY-GK040HGLV4V sensor and MainBoard BN41-02568B software are capable of realizing images in the highest UHD quality at 3840x2160 pixels in 4K UHD, HDR standard. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
The TV model UE40MU6103U has built-in SMART software and Tizen Operating System installed. The connection to the network can be carried out via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, DivX, MKV, JPEG.
Speaker sound system power 20 W (2x10 W) is provided by two speakers. The NICAM stereo audio processing system and the Sound Surround function are used.
Communication with other devices via an external interface is supported by standard input and output connectors: antenna input (RF), AV, component, HDMI x3, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n, WiDi, Miracast.
The digital tuner can receive TV channels in the DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2 standards.
The power consumed when operating from the mains is 130 W. Power supply BN44-00806A.
Dimensions: with stand 918x597x288 mm, without stand 918x536x63 mm.
TV weight: with stand: 8.7 kg, without stand: 7.7 kg.
Attention! Panel CY-GK040HGLV4V LED TV SAMSUNG UE40MU6103U is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.