Technical description and composition of the SAMSUNG UE75MU6100U TV, type of panel and modules used. Module composition.
SAMSUNG LED
Model: UE75MU6100U
Chassis/Version: 01
Panel: CY-GM075FGLV1H
LED backlight: LM41-00121K LM41-00121L LM41-00121J
T-CON: BN41-02573A BN95-04324A LSF750FF03
LED driver (backlight): integrated into MainBoard
PWM LED driver: SO-16
MOSFET LED driver: TO-220F
Power Supply (PSU): BN44-00809A L75S6TN_FDY
PWM Power: PFC, PWM
MOSFET Power: N-FET TO-220F
MainBoard: BN41-02568B BN94-12435C/B
IC MainBoard: SDP1601, KLM4G1FEPD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M
Specifications: BN40-00331A
Specifications UE75MU6100U
SAMSUNG UE75MU6100U
General recommendations for LCD LED TV repair
Possible trouble spots
- SAMSUNG UE75MU6100U TV does not turn on, does not respond to the remote and the control panel buttons, LEDs are not lit and does not flash.
Usually with such manifestations defect is caused by faulty elements in the main power module BN44-00809A. You should measure its output voltages and in case they are not present check the power switches (N-FET TO-220F) and the rectifier diodes for possible short circuits in the converters.
If there is a breakdown in the secondary circuits of the inverter, it can usually be short-circuited, and if there is a short circuit in the primary circuit power elements, the mains fuse or the current sensor at the source of the key is most likely to blow.
Mos-Fet switches used in switching power supplies usually fail due to the failure of other elements, which can take it out of key mode, or cause it to exceed the maximum current or voltage. These may be the circuits feeding the PWM controller, the damping or frequency-retaining circuits, or the negative feedback elements in the stabilization circuit. PWM controllers (PFC) PFC, PWM, if there is no external damage and short circuit between the pins, are checked by replacing with known good ones.
- No picture, but there is sound and all other functions work. Sometimes the image appears for a second and then disappears.
In these cases it is most probable that the backlight of the LED panel is faulty. Sometimes the reason may be in the power supply of LEDs, but more often it is in their failure (breakage or breakage), sometimes in the violation of the contact connections of LED panels LM41-00121K LM41-00121L LM41-00121J.
When trying to identify breaks in the LED strips you should keep in mind that it is difficult to do without disassembling the panel. For example, a current source is needed to open the PN-junctions connected in series.
- The LED on the front panel is blinking, the TV set does not turn on, and the remote control is unresponsive.
Repair or diagnosis of the motherboard BN41-02568B should begin with checking the stabilizers and power converters needed to power the chips and matrix. If necessary, software (software) should be updated or replaced. Complex repair of MB (SSB) is possible only in the conditions of the service center with the necessary equipment. Checking or replacing elements SDP1601, KLM4G1FEPD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M requires necessary training and professional skills to repair modules at component level. Problems associated with the use of BGA soldering technology can sometimes be diagnosed by the heating method.
If you suspect the BN40-00331A tuner malfunction, the first thing to do is to make sure the software is correct, and also that the correct supply voltages and I2C pulses are present at the respective pins of the tuner.
For advanced masters:
If the SAMSUNG UE75MU6100U has no picture, but there is sound, often the CY-GM075FGLV1H display backlight simply does not work. Moreover, in LED TVs usually fail LEDs inside the panel, less often the LED-driver.
In such cases you can see a faintly visible image when external light hits the screen.
To replace the LEDs requires disassembly of the LCD panel CY-GM075FGLV1H - a process which requires a master of experience and expertise. We do not recommend to perform such works by yourself to owners of TV sets and masters who have no experience in LCD panel repair
If there is no image, but backlighting works - the screen becomes slightly lighter when the TV is turned on, and in the open TV you can see the light through the holes in the body of the panel.
In this case the panel may be defective - damage to the strips, cables, for example, as a consequence of moisture after an unsuccessful washing of the screen, the T-CON board (Timing Controller) may be defective. But quite often the MainBoard BN41-02568A is defective and so is the software.
Then first it is necessary to check the panel power supply voltage, 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, you need to trace with an oscilloscope the LVDS signals from MainBoard BN41-02568A, as well as synchronizing signals to the driver stubs.
The screens of LED TVs that are flooded or poorly washed can be repaired in about half of the cases, usually if there is no significant damage to the cables and panel bars.
Owners and users of TV SAMSUNG UE75MU6100U should remember that self-repair without special knowledge and skills, can be fraught with negative consequences, which may lead to the complete irrepairable device!
More on MainBoard Repair
An exterior view of the MainBoard BN41-02568B is shown in the illustration below:
BN41-02568B
MainBoard Appearance
The main features of the SAMSUNG UE75MU6100U:
A matrix (LED panel) CY-GM075FGLV1H is installed.
The matrix is controlled by the Timing Controller (T-CON) BN41-02573A.
To power the LED backlight using a converter, combined with the main board BN41-02568B, is controlled by a PWM controller SO-16. As the power elements of the LED-driver are used TO-220F-type switches.
Forming the necessary supply voltages for all nodes of SAMSUNG UE75MU6100U TV is performed by the power supply module BN44-00809A, or its analogues using PFC, PWM and power switches of N-FET type TO-220F.
MainBoard - the main board (motherboard) is a module BN41-02568B, using SDP1601, KLM4G1FEPD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M and others.
The BN40-00331A tuner provides TV program reception and channel tuning.
Instructions and updates
There are download files for UE75MU6100UXCE from the manufacturer:
Latest software updates, firmwares (latest firmwares):
File type File name Version date Size
Update file (USB) T-KTMDEUC.zip 1280.5 14.11.2019 1281.95 Mb
Manual update 2017_TV_Firmware_Upgrade_Instruction_1.0_T-KTMDEUC.pdf 1.0 28.11.2018 0.28 Mb
Update file (USB) T-KTMDEUC_1280.5.exe 1280.5 14.11.2019 1281.65 Mb
Instructions and user manuals (User Manuals):
File Type File Name Version Date Size
Installation Guide QSG_UMU6100N_CIS_BN68-08410Z-02_170719.0.pdf 02 26.07.2017 0.18 Mb
Installation Guide QSG_UMU6100N_75inch_CIS_BN68-08410T-01_170719.0.pdf 01 19.09.2017 0.18 Mb
UMU6100N_RU_BN68-08446X-01_L04_170627.0.pdf 01 19.09.2017 2.45 Mb
Instruction PDF ENG_KTMDVBEUL-3.0.7_180111.1.pdf 3.0.7 23.01.2018 13.11 Mb
You can download the files on the manufacturer's website for the model UE75MU6100UXCE
Technical description
SAMSUNG UE75MU6100U TV with LCD CY-GM075FGLV1H, size diagonal 75 " (191 cm) in 16:9 aspect ratio. This model uses a panel with an end arrangement of LEDs in the backlighting of the display - Edge LED.
Matrix CY-GM075FGLV1H and MainBoard software BN41-02568A able to realize the image in the highest quality UHD at 3840x2160 pixels in 4K UHD, HDR. Image processing is made by modern technology High Dynamic Range (HDR) with an extended range of brightness gradation.
The TV model UE75MU6100U has built-in software (software) SMART and installed the operating system Tizen. Connection to the network can be made via wireless Wi-Fi. Input analog video signal is decoded in PAL, SECAM, NTSC systems. Graphic processing of a digital signal is done in 480i, 480p, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), DivX, MKV, JPEG.
The sound system capacity of 20 W (2x10 W) is provided by two speakers. NICAM stereo sound processing system and Sound Surround 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), Bluetooth, Wi-Fi 802.11n, Miracast. A VGA (D-Sub 15) connector is provided to connect a computer or laptop to this TV model. This interface supports standard resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080. The digital tuner is capable of receiving DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 TV channels.
The power consumed by the worker in mains mode is 365 W. Power supply BN44-00809A.
Overall dimensions: with stand 1689x1053x385 mm, without stand 1689x971x66 mm.
TV weight: with stand: 38.8 kg, without stand: 35.2 kg.
Warning. The panel CY-GM075FGLV1H of the LED-TV SAMSUNG UE75MU6100U is an expensive and unreliable part of it.
Do not allow any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also not safe to get liquid on the screen. Sometimes one drop is enough if it drips down the glass onto the cables and the TV becomes unrepairable.
