REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Showing posts with label SAMSUNG. Show all posts
Showing posts with label SAMSUNG. Show all posts

Friday, 12 March 2021

REPAIRING / SERVICING TV SAMSUNG UE49N5510AU

Technical description and composition of the SAMSUNG UE49N5510AU TV, panel type and modules used. The composition of the modules.

Samsung led.
Model: UE49N5510AU.

Chassis / Version: Kant-S BN41-02575

PANEL: CY-NN049BGLV3H

LED Backlight: LM41-00630A

LED Driver: Integrated INTO PSU

PWM LED DRIVER: BD94062F SO-16

MOSFET LED DRIVER: TO-252

POWER SUPPLY (PSU): BN44-00957A L49E5_NDY

PWM POWER: PFC (SO-8), PWM (SO-16)

MOSFET POWER: TO-252

Mainboard: BN41-02575B BN94-13052Q

IC Mainboard: CPU: SDP1604, EMMC: THGBMDG5D1LBAIT, SPI Flash: 25Q40, EEPROM: 25C512

TUNER: BN40-00331B.

Technical specifications UE49N5510AU.
SAMSUNG UE49N5510AU.
General Recommendations for Repair TV LCD LED
Possible malfunctions

- SAMSUNG UE49N5510AU does not turn on, does not respond to the remote and the control panel buttons, does not shine and does not flash indicators.

Usually with similar manifestations, the defect is caused by faulty elements in the main power module BN44-00957A. It is necessary to measure its output voltages and, if there is no absence, check the health of power keys (TO-252) and rectifiable diodes in converters for a probable breakdown.
In the breakdowns of diodes in secondary circuits, the converter can operate in the emergency short circuit mode without output voltages, and when the PRT in the power elements of the primary circuit, a network fuse and / or current sensor in the key of the key is usually broken.
Power key breakdown (MOSFET) in pulse sources is sometimes caused by the faults of other schema elements, for example, in chains that feed the PWM controller, frequency and damping, as well as in the negative feedback (EOS) stabilization circuits. PFC (SO-8), PWM (SO-16) PWM (SO-8), PWM (SO-16), if you do not have visible damage to the body and a frank KZ between outputs, are usually checked by replacement.

- No images, the sound, is, the remote control reacts. Either immediately after switching on for a second, the image may appear and immediately the abyss.

Usually in such cases there is no illumination of the LED panel (matrix). Often the cause of the malfunction is the lack of current in the circuit of the LEDs, for example, their breakdown or closure, or the disruption of contact connections of the LM41-00630A operating connections.

READ HOW TO REPAIR THE TV LED BACKLIGHT --------------> HERE.

 
To identify a break in the LED line without disassembling the panel, simply multimeter is impossible. The LEDs are connected in series and to open their transitions, a voltage of several dozen volts will be required. Ideally, for such purposes, the current source will fit. You can open the panel and check each LED separately. Usually, Chinese multimeters are slightly flashing one 3-volt LED if you connect the probe to it in the forward direction (red dipstick - to the anode, black to the cathode). At dual 6-volt indicators, the operation of LED-A can serve as a PN-transition of its emergency stabilion. In the event of a malfunction, LED-and its stabilion will either be broken, either breaks through to / s.

- The TV does not go to the operating mode, does not respond to the remote control. The indicator on the front panel shines constantly, or blinks.

Repair or diagnostics of the BN41-02575B motherboard should be started with checking stabilizers and power converters required for nutrition chip and matrix. If necessary, you should update or replace software (software). If there is no possibility of replacing the MB board (SSB), it is necessary to check the help of its elements - CPU: SDP1604, EMMC: THGBMDG5D1LBAIT, SPI Flash: 25Q40, EEPROM: 25C512. Faulty components should be replaced.

If you suspect a malfunction of the BN40-00331B tuner, it is first necessary to make sure that the software corrects are correct, as well as in the presence of the desired levels of supply voltages and data exchange pulses with the processor over the I2C bus on the appropriate tuner outputs.

The owners and users of the Samsung UE49N5510AU TV should be remembered that independent repairs without special knowledge, skills and qualifications may be fraught with negative consequences that can lead to complete irreparability  of the device!

Driver current limit. BN44-00957A, BD94062F. general information

PWM-control driver chip - BD94062F, current sensor - Resistor R9873 1.4 OHM.
To reduce the backlight current, you can increase the value of the R9873 current sensor, for example, from 1.4 to 2 OHM.

The document PDF for  ----------> BD94062F.

READ HOW TO REPAIR THE TV LED BACKLIGHT --------------> HERE.

 
Additionally on repair Mainboard

The appearance of the Mainboard BN41-02575B is shown in the figure below:






BN41-02575B.

Appearance Power Supply

The main features of the Samsung UE49N5510AU device:

The matrix (LED panel) is installed CY-NN049BGLV3H.
To power the backlight LEDs, a transducer combined with a power supply is applied, controlled by the BD94062F SO-16 PWM controller. The keys of the T-252 type are used as the LED-driver strengths.

The formation of the required feed voltages for all SAMSUNG UE49N5510AU TV nodes is carried out by the BN44-00957A power supply module, or its analogues using PFC microcircuits (SO-8), PWM (SO-16) and T-252 strength keys.
Mainboard is the main board (motherboard) is the BN41-02575B module, using CPU chip: SDP1604, EMMC: THGBMDG5D1LBAIT, SPI Flash: 25Q40, EEPROM: 25C512 and others.
The BN40-00331B tuner provides reception of television programs and settings to the channels.


Instructions and updates

For the UE49N5510Auxru model, the manufacturer has files for download:

Latest firmware updates:
File Type File Name Version Date Size
Update file (USB) T-KTSNDEUC.zip 1310.4 02.11.2020 1006.11 MB
Upgrading instructions 2018_tv_firmware_upgrade_instruction_t-ktsndeuc.pdf 1.0 23.06.2020 0.49 MB
Update file (USB) T-KTSNDEUC_1310.4.exe 1310.4 02.11.2020 1005.9 MB
Update file (USB) t-ktsndeuc_1310.4_ru.exe 1310.4 02.11.2020 1005.9 MB

Instructions and manuals for users (User Manuals):
File Type File Name Version Date Size
Instructions PDF ENG_KSFDVBEUN-1.0.2_180525.3.pdf - 06/29/2018 6.6 MB
Instructions PDF RUS_KSFDVBEUN-1.0.2_180525.3.pdf - 06/29/2018 7.04 MB

You can download files on the manufacturer's website for the ue49n5510auxua.


Samsung UE49N5510AU TV with CY-NN049BGLV3H LCD display, diagonal size 48.5 "(123 cm) of a 16: 9 format. In this model, a panel with an end location of the LED backlit is used - Edge LED.
CY-NN049BGLV3H matrix and Mainboard BN41-02575A mainboard software software provide for viewing gears and films in high quality HD with a resolution of 1920x1080 pixels in graphic decomposition according to 1080p (Full HD). Image processing is made according to modern High Dynamic Range (HDR) technology with an advanced brightness gradation range.
The UE49N5510AU TV is equipped with SMART software, embedded applications and the ability to work on the Internet. Connection to the network can be carried out by wireless Wi-Fi. Supported Multimedia File Formats: MP3, WMA, MPEG4, DivX, MKV, JPEG.
The power of the speaker system of the sound 20 W (2x10 W) provide two speakers. The NICAM sound stereon processing system is used and the Sound Surround voluminous sound function.
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, Miracast. Digital tuner is able to receive television channels in DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed in the network mode is 128 W. Power supply BN44-00957A.

Overall dimensions: with Stand 1105x721x297 mm, without a stand 1105x644x64 mm.

TV mass: with stand: 14.6 kg, without stand: 13 kg.

Attention! SAMSUNG UE49N5510AU LED TV CY-NN049BGLV3H panel is expensive and unreliable it element.
Do not allow any shocks on the glass and pressure on the screen surface to avoid damage to the LED panel!
Also unsafe hitting the fluid on the screen. Sometimes one drop is enough if it shocks down the glass on the plumes so that the TV becomes unrepairable. 

REPAIRING / SERVICING TV SAMSUNG UE49MU6103U

Technical description and composition of the Samsung UE49MU6103U television, panel type and modules used. The composition of the modules.

Samsung led.
Model: UE49MU6103U.

Chassis / Version: Fa01

PANEL: CY-GM049HGLV1V

LED Backlight: LM41-00334A, LM41-00335A, BN96-40782A

LED Driver: Integrated INTO PSU

PWM LED DRIVER: SLC3011M SO-14 STEPUP

MOSFET LED DRIVER: TO-220F

POWER SUPPLY (PSU): BN44-00807F L55S6R_MHS

PWM POWER: PFC, PWM

MOSFET POWER: TO-220F

Mainboard: BN41-02568B BN94-12644E

IC Mainboard: SDP1601, KLM4G1Fepd, 25Q40CLSIP, 25Q80DVSIG, TAS5749M

TUNER: BN40-00331A.

Control: IR: Y18 VNB V2.0 (CT180703) 45912A, WiFi: WIDT30Q BN59-01174D

Specifications UE49MU6103U.
SAMSUNG UE49MU6103U.
General Recommendations for Repair TV LCD LED
Possible malfunctions

- Samsung UE49MU6103U TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators are not lit and not blink.

Often, in such cases, the BN44-00807F power supply module is faulty. It is necessary to measure its output voltages, and in the case of their absence (complete or partial), it is necessary to check the serviceability of the power keys (TO-220F) of transducers and rectifier diodes for the presence of a possible KZ.
With any breakdowns of semiconductors in secondary circuits, the converter usually can normally work in a short circuit emergency mode. There are no output voltages. And when CZ in the power elements of the primary chain, as a rule, a network fuse is broken and the current sensor in the source of the key.
The mos-fet key breaks used in pulse sources is often caused by the faults of other elements, for example, in the power supply circuit of the PWM regulator, in frequency and damping chains, as well as in the negative feedback of stabilization. PWM (PWM) PFC chips, PWM is usually checked by replacing new or obviously good.

- The image is absent, but there is sound and reaction to the remote control. Either for a second, the image may appear immediately after switching on.

As a rule, in this case, the LED panel light is faulty. Often the reason for the malfunction is the lack of current in the chain of the LEDs, for example, their breakdown or closure, or a violation of the contact connections of the LM41-00334A plank connections, LM41-00335A, BN96-40782A.
It should be remembered that to determine the opening in the LED rules, without disassembling the panel, using the tester or the multimeter is not possible without an additional device, for example, the current source. To open all PN transitions immediately, connected in series may require a voltage of several dozen volts. Then it is necessary to open the panel and check each LED multimeter separately. If the capabilities of your multimeter do not allow you to open LED in the forward direction or dual LEDs are used, then the PN-transition of emergency stabilion can serve as an indicator of health. In the event of a malfunction, the LED-A PN-transition of Stabilon will either be broken or breaking through in k / s.


If Samsung UE49MU6103U has no image, but there is sound, often the CY-GM049HGLV1V display illumination does not work. Moreover, the LEDs usually fail within the panel, less often a LED driver.
In such cases, you can see the barely noticeable image with successful appearance of external lighting on the screen.

To replace LEDs, the CY-GM049HGLV1V LCD panel disassembly is required - a process requiring experience and qualifications from the Wizard. We do not recommend producing such works on your own owners of televisions and masters that do not have the experience of repairing LCD panels,


READ HOW TO REPAIR THE TV LED BACKLIGHT --------------> HERE.

 
If there is no image, and the backlight works - the screen when turned on it becomes a little lighter, and in the open TV it is visible light through the holes in the panel housing.
In this case, the panel may also be a faulty - damage to slats, loops, for example, as a consequence of moisture from hitting the screen after unsuccessful screening of the screen, the T-CON board (timing controller) may be faulty. But it is often faulty and the main board of MainBoard BN41-02568B is also possible, and the software failure is also possible.
Then, first of all, it is necessary to check the supply voltage of the panel, the fuses on the T-CON board, as well as the supply and reference voltages of column and lowercase drivers - VGH, VGL, VCOM.
If these measurements within the normal range, the oscilloscope is necessary to track the passage of LVDS signals from Mainboard BN41-02568B, as well as synchronizing signals to the strober with drivers.

Spilled or unsuccessfully floated screens of LED-TVs have the opportunity to restore, about half of the cases, usually, if there are no significant damage in loops and panel strobes.

- The indicator on the front panel blinks, the TV is not turned on in the operating mode, the remote control does not respond.

Repair or diagnostics of the BN41-02568B motherboard should be started with checking stabilizers and power converters needed to power the chip and matrix. If necessary, you should update or replace software (software). Repair of board and replacing the SDP1601 chip, KLM4G1Fepd, 25Q40CLSIP, 25Q80DVSIG, TAS5749M are made in the presence of the necessary equipment, and the corresponding element base. Malfunctions associated with the use of BGA processor soldering technologies can be localized by the warm-up method.

Before replacing the BN40-00331A tuner, if there is no setting to the channels, before you need to check the software and supply voltage at its outputs. It is also necessary to make sure that the data exchange of the tuner and the processor over the I2C bus

Attention to the owners of televisions! SAMSUNG UE49MU6103U independent repair attempts are not recommended by the manufacturer and can lead to serious negative consequences!

Additionally on repair Mainboard

The appearance of Mainboard BN41-02568B is shown in the figure below:






BN41-02568B.

Appearance Power Supply

The main features of the Samsung UE49MU6103U device:

The matrix (LED panel) is installed CY-GM049HGLV1V.
To power the backlight LEDs, a transducer combined with a power supply is applied, controlled by the SLC3011M SO-14 STEPUP switch controller. The keys of the T-220F type are used as the LED driver power elements.
The formation of the required supply voltages for all SAMSUNG UE49MU6103U TV nodes is performed by the BN44-00807F power supply module, or its analogues using PFC, PWM microcircuits and T-220F power keys.
Mainboard is the main board (motherboard) is the BN41-02568B module, using the SDP1601, KLM4G1FepD, 25Q40CLSIP, 25Q80DVSIG chip, 25Q80DVSIG, TAS5749M and others.
The BN40-00331A tuner provides receiving television programs and settings to the channels.

Instructions and updates

For the UN49MU6103PXPA model from the manufacturer there are download files:

Latest firmware updates:
File Type File Name Version Date Size
Update file (USB) t-ktmdeuc.zip 1280.5 14.11.2019 1281.95 MB
Updating Guide 2017_TV_Firmware_Upgrade_instruction_1.0_t-ktmdeuc.pdf 1.0 11/28/2018 0.28 MB
File with update (USB) T-KTMDEUC_1280.5.exe 1280.5 14.11.2019 1281.65 MB


Instructions and manuals for users (User Manuals):
File Type File Name Version Date Size
UMU6100N_RU_BN68-07237B-00_L04_170704.0.pdf 00 09.09.2017 2.44 MB
Installation Guide QSG_UMU6100N_CIS_BN68-08410Z-02_170719.0.pdf 02 09/19/2017 0.18 MB
Instructions PDF ENG_KTMDVBEUL-3.0.7_180111.1.pdf 3.0.7 01/23/2018 13.11 MB
Instruction PDF RUS_KTMDVBEUL-3.0.7_180111.1.pdf 3.0.7 01/23/2018 10.8 MB

You can download files on the manufacturer's website for the UN49MU6103PXPA model.

SAMSUNG UE49MU6103U TV with CY-GM049HGLV1V LCD, diagonal size 48.5 "(123 cm) of a 16: 9 format. In this model, a panel with an end location of the LED backlight is used - Edge LED.
CY-GM049HGLV1V matrix and MainBoard software BN41-02568B mainboard software are capable of implementing the image as high as possible UHD with a resolution of 3840x2160 pixels in 4K UHD, HDR. Image processing is made according to modern High Dynamic Range (HDR) technology with an advanced brightness gradation range.
The UE49MU6103U TV model has built-in SMART software and the TIZEN operating system installed. Connection to the network can be carried out by wireless Wi-Fi. Supported Multimedia File Formats: MP3, WMA, MPEG4, DivX, MKV, JPEG.
The power of the speaker system of the sound 20 W (2x10 W) provide two speakers. The NICAM sound stereon processing system is used and the Sound Surround voluminous sound function.
Communication with other devices via an external interface is supported by standard input and output connections: antenna input (RF), AV, component, HDMI X3, USB X2, Ethernet (RJ-45), Wi-Fi 802.11n, WIDI, Miracast. The digital tuner is able to receive television channels in DVB-T, DVB-T2, DVB-C, DVB-S2 standards.

The power consumed by the work in the network mode is 155 W. Power supply BN44-00807F.

Overall dimensions: with Stand 1108x707x311 mm, without a stand 1108x648x53 mm.

TV mass: with stand: 13.6 kg, without stand: 12.3 kg.

Attention! The CY-GM049HGLV1V LED-TV panel Samsung UE49MU6103U is expensive and unreliable it element.
Do not allow any shocks on the glass and pressure on the screen surface to avoid damage to the LED panel!
Also unsafe hitting the fluid on the screen. Sometimes one drop is enough if it shocks down the glass on the plumes so that the TV becomes IRREPARABLE.

REPAIRING / SERVICING TV SAMSUNG UE49KU6510U

Technical description and composition of the Samsung UE49KU6510U TV, panel type and modules used. The composition of the modules.

Samsung led.
Model: UE49KU6510U.

Chassis / Version: jazz_l_built_in

PANEL: CY-VK049HGLV6V

LED Backlight: BAX439 39674A, BAW499 39673A

LED Driver: Integrated INTO PSU

PWM LED DRIVER: SO-8

MOSFET LED DRIVER: N-FET TO-220F

POWER SUPPLY (PSU): BN44-00876A L55E6_KHS

PWM POWER: PFC, PWM

MOSFET POWER: N-FET TO-220F

Mainboard: BN41-02528A BN94-11233M

IC Mainboard: SDP1531, K4F8E304HBMGCH, 25Q80DVSIG, 25Q40CLSIP, S24C512C

TUNER: BN40-00323A.

Specifications UE49KU6510U.
SAMSUNG UE49KU6510U.
General Recommendations for Repair TV LCD LED
Possible malfunctions

- Samsung UE49KU6510U does not turn on and does not give any signs of working capacity at all. Not blinking indicators and does not respond to control buttons.

With such manifestations, the BN44-00876A power supply module usually fails. Then it is necessary to measure its output voltages and, in the case of their complete or partial absence, it is necessary to check the health of the power keys (N-FET TO-220F) and rectifiable diodes of transducers for the presence of a possible KZ.
With any breakdowns of semiconductors in secondary circuits, the converter usually can normally work in a short circuit emergency mode. There are no output voltages. And when CZ in the power elements of the primary chain, as a rule, a network fuse is broken and the current sensor in the source of the key.
MOS-FET keys used in pulse power sources usually fail because of the fault of other elements that can output it in key mode, or provoke excess of maximum current or voltage values. These may be chains that feed the PWM controller, damper or frequency chains, or EOS elements (negative feedback) in the stabilization scheme. PFC PWM controllers (PWM) PFC, PWM, in the absence of external damage and short circuit between outputs, are checked by replacement for obviously good.

- No image, screen black, there is a sound, with external screen illumination, you can sometimes see barely noticeable outlines of the image.

In such cases, the LED-panel illumination elements are most likely. The reason for this may be a break in the BAX439 39674a LED circuit, BAW499 39673A, or a problem in stabilizing their power.
To check the LED planks to open all the transitions of the LEDs, you need several dozen volts or more, it is best for such purposes to use the current source. An opening of several PN transitions connected in series, it is impossible to detect using a multimeter or tester. In such cases, you need to open the panel and check each LED. If your multimeter can open the LED-A transitions in direct displacement, sometimes you can detect the presence of a PN transition of the protective stabilion by connecting the probe in the opposite direction. If Stabilitron is broken or pierced in k / s, then LED is defective and requires replacement.

If Samsung UE49KU6510U has no image, but there is sound, often the backlight of the CY-VK049HGLV6V display does not work. Moreover, the LEDs usually fail within the panel, less often a LED driver.
In such cases, you can see the barely noticeable image with successful appearance of external lighting on the screen.

To replace LEDs, the CY-VK049HGLV6V LCD panel disassembly is required - a process requiring experience and qualifications from the Wizard. We do not recommend producing such works on your own owners of televisions and masters that do not have the experience of repairing LCD panels.

READ HOW TO REPAIR THE TV LED BACKLIGHT --------------> HERE.

If there is no image, and the backlight works - the screen when turned on it becomes a little lighter, and in the open TV it is visible light through the holes in the panel housing.
In this case, the panel may also be a faulty - damage to slats, loops, for example, as a consequence of moisture from hitting the screen after unsuccessful screening of the screen, the T-CON board (timing controller) may be faulty. But it is often faulty and the main board of Mainboard BN41-02528A is also possible, the software failure is also possible.
Then, first of all, it is necessary to check the supply voltage of the panel, the fuses on the T-CON board, as well as the supply and reference voltages of column and lowercase drivers - VGH, VGL, VCOM.
If these measurements within the norm, the oscilloscope is necessary to track the passage of LVDS signals from Mainboard BN41-02528A, as well as synchronizing signals to the strobam drivers.

Spilled or unsuccessfully floated screens of LED-TVs have the opportunity to restore, about half of the cases, usually, if there are no significant damage in loops and panel strobs.


- The TV does not go to the operating mode, does not respond to the remote control. The indicator on the front panel shines constantly, or blinks.

Repair or diagnostics of the BN41-02528A motherboard should be started with checking stabilizers and power converters required for the nutrition of chips and matrix. If necessary, you should update or replace software (software). If there is no possibility of replacing the MB board (SSB), it is necessary to check the health of its elements - SDP1531, K4F8E304HBMGCH, 25Q80DVSIG, 25Q40CLSIP, S24C512C. Faulty components should be replaced.

If the TV is working normally from external devices, but not configured to television channels, the BN40-00323A tuner malfunction is possible. In such cases, first of all, it is necessary to make sure that the supply voltages on its respective conclusions. It is also necessary to make sure that the data exchange of the tuner and the processor over the I2C bus. Sometimes the cause of the inoperability of the tuner may be a program failure.

Attention to the owners of televisions! SAMSUNG UE49KU6510U independent repair attempts are not recommended by the manufacturer and can lead to serious negative consequences!

Additionally on repair Mainboard

The appearance of Mainboard BN41-02528A is shown in the figure below:




BN41-02528A.

BN41-02528A can be used in televisions:

SAMSUNG UE43KU6650U (Panel CY-VK043HGAV5V), SAMSUNG UE43KU6000W UE43KU6000 (Panel CY-GK043HGEV1H), SAMSUNG UE55KU6400 UE55KU6400U (Panel CY-KK055HQLV4H), SAMSUNG UE49KU6670 UE49KU6670U (Panel CY-VK049HGLV4V), SAMSUNG UE40KU6000U (Panel LSF400FN05-L03 CY-GK040HGLV4V), SAMSUNG UE40KU6300U (Panel CY-WK040HGLV1V), SAMSUNG UE43KU6500U (Panel CY-VK043HGAV4V T430QVR01.0), SAMSUNG UE40KU6402U (Panel CY-KK040HGNV4H).

Appearance Power Supply

The main features of the Samsung UE49KU6510U device:

Matrix (LED panel) is installed CY-VK049HGLV6V.

To power the backlight LEDs, a transducer combined with a power supply is applied, controlled by the SO-8 PWM controller. The keys of the N-FET T-220F are used as the LED-driver power elements.
The formation of the required supply voltages for all SAMSUNG UE49KU6510U TV nodes performs the BN44-00876A power supply module, or its analogues using PFC, PWM microcircuits, and N-FET T-220F power keys.
Mainboard - the main board (motherboard) is a BN41-02528A module, using SDP1531, K4F8E304HBMGCH chip, 25Q80DVSIG, 25Q40CLSIP, S24C512C and others.
The BN40-00323A tuner provides reception of television programs and settings to the channels.

Instructions and updates

For the manufacturer's UE49KU6510UXZG model there are download files:

Latest firmware updates:
File Type File Name Version Date Size
Upgrading instructions 2016_tv_firmware_upgrade_instruction_1.0_t-jzmdeuc.pdf 1.0 27.11.2018 0.35 MB
Update file (USB) t-jzmdeuc.zip 1242.0 18.02.2020 1285.72 MB
File with update (USB) T-JZMDEUC_1242.0.exe 1242.0 02/18/2020 1285.43 MB
Update file (USB) T-JZMDEUC_1242.0_ru.exe 1242.0 02/18/2020 1285.43 MB

Instructions and manuals for users (User Manuals):
File Type File Name Version Date Size
KU6510_RU_BN68-07872K-01_L04_160627.0.PDF 01 02.11.2016 21.14 MB
Installation Guide KU6510_CIS_QSG_BN68-07874L-00_160531.0.pdf 00 08.11.2016 2.58 MB
Instructions PDF ENG-JZDVBEUK-1.1.3.PDF 1.1.3 09.12.2016 27.45 MB
Instructions PDF RUS-JZDVBEUK-1.1.3.pdf 1.1.3 09.12.2016 24.23 MB

You can download files on the manufacturer's website for the UE49KU6510UXZG


SAMSUNG UE49KU6510U TV with CY-VK049HGLV6V LCD, diagonal size 49 "(124 cm) of a 16: 9 format. In the display technology of this model, LED LED lights are implemented.
CY-VK049HGLV6V matrix and Mainboard BN41-02528A mainboard software software are capable of implementing the image as high as possible UHD with a resolution of 3840x2160 pixels in the 4K UHD standard, HDR. Image processing is made according to modern High Dynamic Range (HDR) technology with an advanced brightness gradation range.
The UE49KU6510U TV is equipped with SMART software, embedded applications and the ability to work on the Internet. Connection to the network can be carried out by wireless Wi-Fi. Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
The power of the speaker system of the sound 20 W (2x10 W) provide two speakers. The NICAM sound stereon processing system is used and the Sound Surround voluminous sound function.
Communication with other devices through an external interface is supported by standard input and output connectors: antenna entry (RF), AV, component, HDMI X3, USB X2, Ethernet (RJ-45), Bluetooth, Wi-Fi. The digital tuner is able to receive television channels in DVB-T, DVB-T2, DVB-C, DVB-S2 standards.

The power consumed by the work in the network mode is 155 W. Power supply BN44-00876A.

Overall dimensions: with Stand 1096x707x213 mm, without a stand 1096x634x110 mm.

TV mass: with stand: 14.7 kg, without stand: 14.4 kg.

Attention! The CY-VK049HGLV6V LED TV panel Samsung UE49KU6510U is expensive and unreliable it element.
Do not allow any shocks on the glass and pressure on the screen surface to avoid damage to the LED panel!
Also unsafe hitting the fluid on the screen. Sometimes one drop is enough if it shocks down the glass on the plumes so that the TV becomes unrepretentious. 

Monday, 22 February 2021

REPAIRING / SERVICING TV SAMSUNG UE55MU6300U

Technical description and composition of the SAMSUNG UE55MU6300U TV, panel type and modules used. The composition of the modules.

SAMSUNG LED
Model: UE55MU6300U

Chassis / Version: AA01

Panel: CY-WM055HGAV1V

LED backlight: LM41-00135A, LM41-00136A

LED driver (backlight): integrated into PSU

PWM LED driver: SLC3011N

MOSFET LED driver: TO-220F

Power Supply (PSU): BN44-00807A L55S6_FHS

PWM Power: SPC7011F, FA6A20

MOSFET Power: N-FET TO-220F

MainBoard: BN41-02568B BN94-12426F

IC MainBoard: SDP1601, KLM4G1FEPD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M

Tuner: BN40-00331A

Control: IR: KU6000 BN41-02324C, Wi-Fi: WCM730Q BN59-01264A

UE55MU6300U Specifications
SAMSUNG UE55MU6300U
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions

- TV SAMSUNG UE55MU6300U does not turn on and does not show any signs of operability at all. No response to the remote control and front panel control buttons.

A fault in such cases should be started to look for in the circuits of the BN44-00807A power supply. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (N-FET TO-220F) and rectifier diodes in the converters for a short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency mode of a short circuit, and with a short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key is often cut 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 regulator, in frequency-setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) SPC7011F, FA6A20 are usually checked by replacing them with new ones, or known to be working properly.

- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately

As a rule, in this case, the backlight of the LED panel is faulty. Usually, the cause of the malfunction is in the breakage of the LEDs, or in the connectors of the LED strips LM41-00135A, LM41-00136A, but sometimes the LED driver is also faulty.
It is impossible to check the line of series-connected LEDs without a special current source, and it is unsafe for them to use any voltage sources above 12V for this purpose. Then all that remains is to open the panel and check each LED separately. Usually, Chinese multimeters with 9V power supply lightly light up one 3-volt LED, if you connect the probes to it in the forward direction, the red probe to the anode, and the black one to the cathode. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or pierced in the K / Z.

If SAMSUNG UE55MU6300U has no picture, but there is sound, often the display backlight CY-WK055HGLV1V 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 with a successful hit of external light on the screen.

Replacing the LEDs requires disassembling the LCD panel CY-WK055HGLV1V - a process that requires experience and qualifications from the master. We do not recommend doing such work on your own to owners of TVs and craftsmen who do not have experience in repairing LCD panels.

READ HOW TO REPAIR THE TV LED BACKLIGHT --------------> HERE.

If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV, light is visible 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, 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 the normal range, it is necessary to use an oscilloscope to trace the passage of LVDS signals from the MainBoard BN41-02568B, 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.

- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.

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). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - SDP1601, KLM4G1FEPD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M with new or known good ones. In cases where BGA technologies are used, defects are usually localized by heating.

In cases where there is no tuning to terrestrial or cable TV channels, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the BN40-00331A tuner. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.

Attention to users! Self-repair of the SAMSUNG UE55MU6300U TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!

Additional MainBoard Repair

The appearance of the MainBoard BN41-02568B is shown in the figure below:






BN41-02568B

External view of the power supply

BN44-00807A:



Main features of the SAMSUNG UE55MU6300U device:

Installed matrix (LED panel) CY-WM055HGAV1V.
A converter combined with a power supply is used to power the backlight LEDs and is controlled by the SLC3011N PWM controller. TO-220F switches are used as power elements of the LED driver.

The formation of the necessary supply voltages for all nodes of the SAMSUNG UE55MU6300U TV is carried out by the BN44-00807A power module, or its analogs using SPC7011F, FA6A20 microcircuits and N-FET TO-220F power switches.
MainBoard - the main board (motherboard) is a BN41-02568B module, using SDP1601, KLM4G1FEPD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M and others.
The BN40-00331A tuner provides reception of television programs and tuning to channels.

Instructions and updates

There are files to download for the UE55MU6300UXCE  model from the manufacturer:

Latest software updates, firmware (latest firmwares):
File type File name Version Date Size
Update file (USB) T-KTMDEUC.zip 1280.5 11/14/2019 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 11/14/2019 1281.65 Mb
Update file (USB) T-KTMDEUC_1280.5_RU.exe 1280.5 14.11.2019 1281.65 Mb

User Manuals and Instructions:
File type File name Version Date Size
User manual UMU6300P_EN_BN68-08445G-01_L04_170329.1.pdf 01 08.08.2017 19.35 Mb
Installation Guide QSG_UMU6300P_CIS_BN68-08410Y-01_170719.0.pdf 01 08.08.2017 0.21 Mb
Instruction PDF ENG_KTMDVBEUL-3.0.7_180111.1.pdf 3.0.7 23.01.2018 13.11 Mb
Instruction PDF RUS_KTMDVBEUL-3.0.7_180111.1.pdf 3.0.7 23.01.2018 10.8 Mb

Files can be downloaded from the manufacturer's website for the UE55MU6300UXCE model.


TV SAMSUNG UE55MU6300U with LCD CY-WK055HGLV1V, 55 "(140 cm) 16: 9 format diagonally. This model uses a panel with edge LED backlighting - Edge LED.
CY-WK055HGLV1V 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.
TV model UE55MU6300U has built-in SMART software and Tizen operating system installed. The connection to the network can be carried out via Wi-Fi wireless connection. The input analog video signal is decoded in PAL, SECAM, NTSC systems. Graphic processing of a digital signal is performed in the 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards. Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), DivX, MKV, JPEG.
Speaker 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), 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 television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed when operating from the network is 210 W. Power supply BN44-00807A.

Dimensions: with stand 1242x779x311 mm, without stand 1242x719x112 mm.

TV weight: with stand: 17.9 kg, without stand: 16.7 kg.

Attention! Panel CY-WK055HGLV1V of SAMSUNG UE55MU6300U LED TV 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.

REPAIRING / SERVICING TV SAMSUNG UE55NU7100U

 Technical description and composition of the SAMSUNG UE55NU7100U TV, panel type and modules used. The composition of the modules.

SAMSUNG LED
Model: UE55NU7100U

Chassis / Version: KANT-M2E

Panel: CY-NN055HGLV2V

LED backlight: EDGE LED 55NU

LED driver (backlight): integrated into PSU

PWM LED driver: SLM4283A SOP-20 StepDown

MOSFET LED driver: N-FET TO-220F

Power Supply (PSU): BN44-00932B L55E6_NSM

PWM Power: PFC, PWM

MOSFET Power: N-FET TO-220F

MainBoard: BN41-02635B BN94-13275E

IC MainBoard: CPU, eMMC: KLM4G1FEPD, SPI 25Q40, EEPROM: 24C512, DRAM, AUDIO: TAS5749M

Tuner: BN40-00331A

UE55NU7100U Specifications
SAMSUNG UE55NU7100U
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions

- SAMSUNG UE55NU7100U TV does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.

Most likely in this case, the main switching power supply (SMPS) BN44-00932B is faulty. It is necessary to measure its output voltages, and in case of their absence (full or partial), the serviceability of the power switches (N-FET TO-220F) of the converters and rectifier diodes should be checked for a possible short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency mode of a short circuit, and with a short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key is often cut off.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM) PFC, PWM, if they do not have visible damage to the case and an outright short circuit between the pins, are usually checked by replacement.

- No picture, sound, all other TV functions are working. When turned on, the image may sometimes appear for a second.

The backlight of the matrix (LED panel) is usually faulty in these cases. The reason may be found in the malfunction of the LEDs, in the violation of the contact connections of the EDGE LED 55NU LED strips, or in the provision of their power supply (LED driver).
It is impossible to check the line of series-connected LEDs without a special current source, and it is unsafe for them to use any voltage sources above 12V for this purpose. Then all that remains is to open the panel and check each LED separately. Usually, Chinese multimeters with 9V power supply lightly light up one 3-volt LED, if you connect the probes to it in the forward direction, the red probe to the anode, and the black one to the cathode. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or pierced in the K / Z.

If SAMSUNG UE55NU7100U has no picture, but there is sound, often the display backlight CY-NN055HGLV2V 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 with a successful hit of external light on the screen.

Replacing the LEDs requires disassembling the LCD panel CY-NN055HGLV2V - 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 often the main board MainBoard BN41-02635B turns out to be faulty, a software failure is also possible.
Then, first of all, you need to check the panel 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, it is necessary with an oscilloscope to track the passage of LVDS signals from the MainBoard BN41-02635B, 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.

- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.

Repair or diagnostics of the BN41-02635B 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). In some cases, to repair the MB (SSB) board, it may be necessary to replace chips - CPU, eMMC: KLM4G1FEPD, SPI 25Q40, EEPROM: 24C512, DRAM, AUDIO: TAS5749M with new or known good ones. In cases where BGA technologies are used, defects are usually localized by heating.

If the TV operates normally from external devices, but does not tune to TV channels, the BN40-00331A tuner may be faulty. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the reason for the inoperability of the tuner may be a software failure.

Once again, we remind TV users: do not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repairs to professionals with sufficient experience in the field of electronic repair.

Additional MainBoard Repair

The appearance of the MainBoard BN41-02635B is shown in the figure below:




BN41-02635B

External view of the power supply

Main features of the SAMSUNG UE55NU7100U device:

The matrix (LED-panel) CY-NN055HGLV2V is installed.
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the SLM4283A SOP-20 StepDown PWM controller. N-FET TO-220F switches are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE55NU7100U TV is carried out by the BN44-00932B power module, or its analogs using PFC, PWM microcircuits and N-FET TO-220F power switches.

MainBoard - the main board (motherboard) is a BN41-02635B module, using CPU chips, eMMC: KLM4G1FEPD, SPI 25Q40, EEPROM: 24C512, DRAM, AUDIO: TAS5749M and others.
The BN40-00331A tuner provides reception of television programs and tuning to channels.

Instructions and updates

There are files to download for the UE55NU7100U  model from the manufacturer:

Latest firmware updates (latest firmwares):
File type File name Version Date Size
Update instruction 2018_TV_Firmware_Upgrade_Instruction_T-KTM2LDEUC.pdf 1.0 23.06.2020 0.5 Mb
Update file (USB) T-KTM2LDEUC.zip 1310.4 02.11.2020 1117.74 Mb
Update file (USB) T-KTM2LDEUC_1310.4.exe 1310.4 02.11.2020 1117.49 Mb
Update file (USB) T-KTM2LDEUC_1310.4_RU.exe 1310.4 02.11.2020 1117.49 Mb

User Manuals and Instructions:
File type File name Version Date Size
User manual BN68-08987G-02_UNU7100X_EN_L02_180710.1.pdf 02 13.07.2018 1.22 Mb
Brief instructions BN68-08995L-01_QSG_UNU7100X_CIS_180314.0.pdf 01 23.05.2018 0.3 Mb
Instruction PDF ENG_KM2DVBEUN-3.0.2_181205.0.pdf 3.0.2 02.01.2019 11.33 Mb
Instruction PDF RUS_KM2DVBEUN-3.0.2_181205.0.pdf 3.0.2 02.01.2019 11.42 Mb

Files can be downloaded from the manufacturer's website for the UE55NU7100  model.

 

 

SAMSUNG UE55NU7100U TV with LCD CY-NN055HGLV2V, diagonal 54.6 "(139 cm) in 16: 9 format. This model uses a panel with edge LED backlighting - Edge LED.
CY-NN055HGLV2V sensor and MainBoard BN41-02635B software are capable of realizing images in the highest UHD quality at 3840x2160 resolution in 4K UHD, HDR standard. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
TV model UE55NU7100U has built-in software (software) SMART and installed Tizen Operating System. The connection to the network can be carried out via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), 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 802.11ac, Miracast. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed when operating from the network is 150 W. BN44-00932B power supply.

Dimensions: with stand 1239x793x261 mm, without stand 1239x714x59 mm.

TV weight: with stand: 17.7 kg, without stand: 17.3 kg.

Attention! Panel CY-NN055HGLV2V LED TV SAMSUNG UE55NU7100U 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.

Monday, 1 February 2021

REPAIRING / SERVICING TV SAMSUNG UE55RU7120

Technical description and composition of the SAMSUNG UE55RU7120 TV, panel type and modules used. The composition of the modules.

SAMSUNG LED
Model: UE55RU7120 UE55RU7120U

Chassis / Version: FA04

Panel: CY-NN055HGLV2H

LED backlight: AOT_55_NU7100_2X40_3030C

T-CON: PFC (so-8), PWM (so-16)

LED driver (backlight): integrated into PSU

PWM LED driver: SO-16 Step-Down

MOSFET LED driver: TO-252

Power Supply (PSU): BN44-00932Q L55E7_RHS

PWM Power: PFC SO-8, PWM SO-16

MOSFET Power: TO-252, TO-220F

MainBoard: BN41-02703A BN94-14197L

IC MainBoard: CPU, eMMC, DRAM, AUDIO, DC / DC

Tuner: BN40-00331B

Specifications UE55RU7120U
SAMSUNG UE55RU7120
General recommendations for TV LCD LED repair
Possible malfunctions

- TV SAMSUNG UE55RU7120 does not turn on and does not show any signs of turning on, does not respond to control buttons and to the remote control.

In some of these cases, the main switching power supply, the BN44-00932Q module, is faulty. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, the serviceability of the power switches (TO-252, TO-220F) and rectifying diodes should be checked for a possible breakdown (short circuit).
In case of breakdowns in the secondary circuits, the converter, as a rule, can operate in an emergency in the short-circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse 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) PFC SO-8, PWM SO-16 are usually checked by replacing them with new ones, or knowingly working.

- There is no picture, but there is sound and all other functions work. Sometimes when you turn it on, the image appears and disappears for a second.

Usually, in such cases, there is no backlighting of the LED panel (matrix). The reason may be in the breakage of the backlight LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the AOT_55_NU7100_2X40_3030C strings connectors.
To identify an open circuit in the LED lines without disassembling the panel, a current source is required. It is impossible to open the junctions connected in series with a simple multimeter; a voltage of several tens of volts is required.

- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.

Repair or diagnostics of the BN41-02703A 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). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - CPU, eMMC, DRAM, AUDIO, DC / DC which may need to be replaced with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its pins with the board (detected by warming up).

Before changing the tuner BN40-00331B, if it is not possible to tune to television channels, you should make sure that there are supply voltages, which must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of data exchange between the tuner and the processor can be monitored with an oscilloscope

Once again, I remind TV users: do not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair to professionals with sufficient experience in the field of electronic repair.

Additional MainBoard Repair

The appearance of the MainBoard BN41-02703A is shown in the figure below:







BN41-02703A

External view of the power supply

Main features of the SAMSUNG UE55RU7120 device:

Installed matrix (LED panel) CY-NN055HGLV2H.
Matrix control uses the PFC Timing Controller (T-CON).
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the SO-16 Step-Down PWM controller. TO-252 switches are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE55RU7120 TV is carried out by the BN44-00932Q power module, or its analogs using PFC SO-8, PWM SO-16 microcircuits and TO-252, TO-220F power switches.

MainBoard - the main board (motherboard) is a BN41-02703A module, using CPU, eMMC, DRAM, AUDIO, DC / DC chips and others.
The BN40-00331B tuner provides reception of television programs and tuning to channels.

Instructions and updates

There are files to download for the UE55RU7120UXRU model from the manufacturer:

Latest firmware updates (latest firmwares):
File type File name Version Date Size
Update file (USB) T-MSLDEUC.zip 1371.0 10/16/2020 1284.07 Mb
Update instruction 2019_TV_Firmware_Upgrade_Instruction_T-MSLDEUC.pdf 1.0 16.06.2020 0.49 Mb
Update file (USB) T-MSLDEUC_1371.0.exe 1371.0 16.10.2020 1283.78 Mb
Update file (USB) T-MSLDEUC_1371.0_RU.exe 1371.0 10.16.2020 1283.78 Mb

User Manuals and Instructions:
File type File name Version Date Size
User manual BN68-09495D-00_URU7100H_EN_L02_190215.1.pdf 00 03/13/2019 0.86 Mb
Brief instructions BN68-09510A-00_QSG_URU7100H_CIS_190208.0.pdf 00 03/13/2019 0.45 Mb
Instruction PDF MUSDVBEUR-3.0.5_EM_MUSE_EU_ENG_201026.0.pdf 3.0.0 29.11.2020 22.13 Mb
PDF instruction MUSDVBEUR-3.0.5_EM_MUSE_EU_RUS_201026.0.pdf 3.0.0 11/29/2020 22.11 Mb

Files can be downloaded on the manufacturer's website for the UE55RU7120UXRU model


SAMSUNG UE55RU7120U TV with LCD CY-NN055HGLV2H, diagonal size 54.6 "(139 cm) 16: 9 format. The display technology of this model is implemented with LED backlighting.
CY-NN055HGLV2H sensor and MainBoard BN41-02703A software are capable of realizing images in the highest UHD quality at 3840x2160 resolution in 4K UHD, HDR standard. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
The UE55RU7120U TV is equipped with SMART software, built-in applications and the ability to work on the Internet. The connection to the network can be carried out via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), 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), Bluetooth, Wi-Fi, Miracast. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed when operating from the mains is 145 W. BN44-00932Q power supply.

Dimensions: with stand 1239x793x261 mm, without stand 1239x714x59 mm.

TV weight: with stand: 17.7 kg, without stand: 17.3 kg.

Attention! Panel CY-NN055HGLV2H of SAMSUNG UE55RU7120U LED TV 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. (SO YOU'RE BETTER, WITH YOUR COLA, FAR AWAY FROM YOUR GARBAGE TV !!)

Friday, 29 January 2021

REPAIRING / SERVICING TV SAMSUNG UE40K6500

Technical description and composition of the SAMSUNG UE40K6500 TV, panel type and modules used. The composition of the modules.

SAMSUNG LED
Model: UE40K6500 UE40K6500AU

Chassis / Version: FA01

Panel: CY-VK040BGLV1V

T-CON: BN41-02481A LS400HN02 SK98BN950

LED driver (backlight): integrated into PSU

PWM LED driver: SLC7015R02

Power Supply (PSU): BN44-00871A L40E1_KDY

PWM Power: FA1A50N, FA6A21N

MOSFET Power: 60R580P

MainBoard: BN41-02534B BN94-10994T

IC MainBoard: CPU: SDP1415, SPI Flash 25Q41, EEPPOM: 24C512, eMMC: THGBMBG

Tuner: BN40-00318A

Control: IR: BN41-02515A, WiFi: WCK720Q

UE40K6500AU Specifications
SAMSUNG UE40K6500
General recommendations for TV LCD LED repair
Possible manifestations of defects

- TV SAMSUNG UE40K6500 does not turn on and does not show any signs of operability at all. No response to the remote control and front panel control buttons.

With such manifestations, the power module BN44-00871A usually fails. It is necessary to make sure that its output voltages are present and, if they are completely absent, check the power switches (60R580P) and rectifier diodes for a possible short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in short-circuit mode, and in case of short-circuit in the elements of the primary circuit, the mains fuse is usually cut off.
Breakdown of Mos-Fet keys 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) FA1A50N, FA6A21N are usually checked by replacing them with new ones, or known to be working properly.

- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately

Usually, in such cases, a malfunction is detected in the LED panel backlight nodes. The reason can sometimes be in the power supply of the LEDs, but more often in their malfunction (breakdown or open circuit), sometimes in the violation of the contact connections of the LED strips.
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the 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, you can check each LED separately. Typically, Chinese multimeters will lightly light one 3-volt LED if you connect the probes to it in the forward direction. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its 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.

Repair or diagnostics of the BN41-02534B 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). Sometimes it is necessary to check or replace (if necessary) elements of the MainBoard - CPU: SDP1415, SPI Flash 25Q41, EEPPOM: 24C512, eMMC: THGBMBG. In cases where a BGA processor is used, its malfunction is usually detected by the local warm-up method.

If the TV operates normally from external devices, but does not tune to TV channels, the BN40-00318A tuner may be faulty. In such cases, first of all, you should make sure that the supply voltage is present at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the reason for the inoperability of the tuner may be a software failure.

If SAMSUNG UE40K6500AU has no picture, but there is sound, often the display backlight CY-VK040BGLV6V 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 with a successful hit of external light on the screen.

Replacing the LEDs requires disassembling the LCD panel CY-VK040BGLV6V - 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, light is visible 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 BN41-02534B often turns out to be faulty, a software failure is also possible.
Then, first of all, you need to check the panel 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 the normal range, it is necessary to trace the passage of LVDS signals from the MainBoard BN41-02534B 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.

Users and owners of TVs should remember that attempts to self-repair a SAMSUNG UE40K6500 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences! Do not attempt self-repair without the relevant knowledge, experience and necessary qualifications!

Additional MainBoard Repair

The appearance of the MainBoard BN41-02534B is shown in the figure below:

BN41-02534B

BN41-02534B can be used in TVs:

SAMSUNG UE40K5500 (Panel CY-KK040BGLV1V), SAMSUNG UE32K5500 UE32K5500AW (Panel CY-KK032BGAV1V), SAMSUNG UE49K5500 UE49K5500BU (Panel CY-KK049BGLV1V).


External view of the power supply

Main features of SAMSUNG UE40K6500 device:

Installed matrix (LED-panel) CY-VK040BGLV1V.
Matrix control uses the BN41-02481A Timing Controller (T-CON).
To power the backlight LEDs, a converter combined with a power supply is used, controlled by the SLC7015R02 PWM controller.

The formation of the necessary supply voltages for all nodes of the SAMSUNG UE40K6500 TV is carried out by the BN44-00871A power module, or its analogs using FA1A50N, FA6A21N microcircuits and power switches of the 60R580P type.
MainBoard - the main board (motherboard) is a BN41-02534B module, using CPU chips: SDP1415, SPI Flash 25Q41, EEPPOM: 24C512, eMMC: THGBMBG and others.
Tuner BN40-00318A provides reception of television programs and tuning to channels.



Instructions and updates

There are files to download for the UE40K6500AUXTK  model from the manufacturer:

Latest firmware updates (latest firmwares):
File type File name Version Date Size
Update instruction 2016_TV_Firmware_Upgrade_Instruction_1.0_T-HKMFKDEUC.pdf 1.0 27.11.2018 0.35 Mb
Update file (USB) T-HKMFKDEUC.zip 1242.0 02/18/2020 991.11 Mb
Update file (USB) T-HKMFKDEUC_1242.0.exe 1242.0 02/18/2020 990.9 Mb
Update file (USB) T-HKMFKDEUC_1242.0_RU.exe 1242.0 18.02.2020 990.9 Mb

User Manuals and Instructions:
File type File name Version Date Size
User manual K6300_EN_BN68-07871H-00_2016.05.16.pdf 00 09.11.2016 20.99 Mb
Installation Guide K6300_CIS_QSG_BN68-07991R_01_160603.0.pdf 01 09.11.2016 3.58 Mb
Instruction PDF ENG-HMFDVBEUK-1.0.8.pdf 1.0.8 16.12.2016 21.56 Mb
Instruction PDF RUS-HMFDVBEUK-1.0.8.pdf 1.0.8 16.12.2016 21.71 Mb

Files can be downloaded from the manufacturer's website for the UE40K6500AUXTK  model.


SAMSUNG UE40K6500AU TV with LCD CY-VK040BGLV6V, diagonal size 40 "(102 cm) 16: 9 format. The display technology of this model is implemented with LED backlighting.
The CY-VK040BGLV6V matrix and the software of the MainBoard BN41-02534B provide viewing of broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphics decomposition at 1080p (Full HD).
The UE40K6500AU TV is equipped with SMART software, built-in applications and the ability to work on the Internet. The connection to the network can be carried out via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker 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), Bluetooth, Wi-Fi. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S2 standards.

The power consumed when operating from the network is 95 W. BN44-00871A power supply.

Dimensions: with stand 916x607x251 mm, without stand 916x541x89 mm.

TV weight: with stand: 10.1 kg, without stand: 9 kg.

Attention! Panel CY-VK040BGLV6V of LED TV SAMSUNG UE40K6500AU is an expensive and unreliable element.
Avoid any impacts 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.

REPAIRING / SERVICING TV SAMSUNG UE43J5202

Technical description and composition of SAMSUNG UE43J5202 TV, type of panel and modules used. Module composition.

SAMSUNG LED
Model: UE43J5202 UE43J5202AU

Chassis/Version: BZ01

Panel: BOEI430WU1

LED backlight: GC43D08-ZC22AG-15 303GC430043

T-CON: HV430FHB-N1A 47-6021139 HV430FHBN1A

LED driver (backlight): integrated into PSU

PWM LED driver: SLC7015R

MOSFET LED driver: TO-252

Power Supply (PSU): BN44-00852A L48MSF_FDY

PWM Power: FA6A20N

MOSFET Power: TO-220, TO252

MainBoard: BN41-02482A BN94-12496G

MainBoard IC: CPU, eMMC, SPI Flash, DRAM, AUDIO, DC/DC

MainBoard: BN40-00318A DNTS243H5A

Control: Wi-Fi: WDF710Q BN59-01196C, IR: J5000_5200 BN41-02477A A38694D

Specifications UE43J5202AU
SAMSUNG UE43J5202
General recommendations for LCD LED TV repair
Possible defects

- SAMSUNG UE43J5202 does not turn on and does not show any signs of performance at all. Does not blink on the indicators and does not respond to the control buttons.

Often in such cases the power module BN44-00852A is defective. Then we recommend to measure its output voltages and in case of their absence you should check the functionality of the power switches (TO-220, TO252) and the inverter rectifier diodes for probable short circuit.
If the semiconductors in the secondary circuits breakdown, the inverter can usually be short-circuited, and the mains fuse is often blown when the power elements in the primary circuit are shorted.
Breakdown of power switches (MosFet) in pulsed sources, sometimes caused by faults in other circuit elements, such as PWM controller supply, frequency-retaining or damping circuits, as well as in negative feedback stabilization circuits (NFSR). PWM regulators FA6A20N, if they do not have visible housing damage and outright short circuits between pins, are usually checked by replacement.

- No picture, but sound is present, remote control responds. Or the image appears at power on and immediately disappears.

Failure in most of these cases is detected in the nodes and elements of LED panel backlight. The cause may be in the breakage of the backlight LEDs, in their power supply stabilization, or in the violation of the contact connections of the GC43D08-ZC22AG-15 303GC430043 string connectors.
When trying to detect breaks in the LED strings, 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 TV doesn't turn on, the remote control doesn't respond. Indicator blinks or signals standby mode.

Repair or diagnostic of the motherboard BN41-02482A should begin with checking the stabilizers and power converters necessary to power the chips and matrix. If necessary, software (software) should be updated or replaced. If there is no possibility to replace the MB board (SSB), it is necessary to check the functionality of its components - CPU, eMMC, SPI Flash, DRAM, AUDIO, DC/DC. Defective components should be replaced.

The BN40-00318A DNTS243H5A tuner is faulty after checking the software and all the supply voltages at the terminals. The data exchange between the tuner and the processor via I2C can be checked with an oscilloscope.

Users and owners of TVs need to remember that trying to repair the SAMSUNG UE43J5202 TV without the appropriate qualification and the necessary experience, can lead to serious negative consequences!

More on MainBoard repair

The exterior of the MainBoard BN41-02482A is shown in the figure below:



N41-02482A

MainBoard Appearance

The main features of the SAMSUNG UE43J5202:

A matrix (LED panel) BOEI430WU1 is installed.
Timing Controller (T-CON) HV430FHB-N1A is used to control the matrix.
A converter combined with a power supply is used to power the backlight LEDs and is controlled by the SLC7015R PWM controller. As the power elements of LED-driver are used switches of TO-252 type.
The power supply module BN44-00852A or its analogues with the use of FA6A20N chips and TO-220, TO-252 power switches form the necessary supply voltages for all the nodes of SAMSUNG UE43J5202 TV.


Instructions and updates

There are downloadable files for un43j5200ahxpa model from the manufacturer:

User Manuals and Instructions (User Manuals):
File Type File Name Version Date Size
ENG-NMDVBEU-1.110 user manual 1.110 11.11.2015 4.57 Mb

You can download the files from the manufacturer's website for the model un43j5200ahxpa.

 
MainBoard - the main board (motherboard) is a module BN41-02482A, using CPU, eMMC, SPI Flash, DRAM, AUDIO, DC/DC and other chips.
The BN40-00318A DNTS243H5A tuner provides TV program reception and channel tuning.


SAMSUNG UE43J5202AU TV with BOEI430WU1 LCD display, measuring 42.5" (108 cm) diagonally in 16:9 aspect ratio. The 1000000:1 dynamic contrast ratio is achieved by special control of the LEDs depending on the brightness of the scene. This model uses a panel with an end arrangement of LEDs in the display backlight - Edge LED.
Matrix BOEI430WU1 and MainBoard software BN41-02482A provide for viewing shows and movies in high quality HD at a resolution of 1920x1080 pixels in 1080p (Full HD).
The model of TV UE43J5202AU has built-in software (software) SMART and installed the operating system Tizen. Connection to the network can be made via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, DivX, MKV, JPEG.
The speaker system has a sound power of 20 W (2x10 W) provided by the two speakers. It uses NICAM stereo sound processing and Sound Surround surround function.
Communication with other devices via an external interface is supported by standard input and output connectors: antenna input (RF), AV, component, HDMI x2, USB, Ethernet (RJ-45), Wi-Fi 802.11n, WiDi, Miracast. The digital tuner is capable of receiving DVB-T, DVB-T2, DVB-C TV channels.

The power consumed by the worker in mains mode is 84 W. The power supply BN44-00852A.

Overall dimensions: with stand 986x632x288 mm, without stand 986x575x72 mm.

TV weight: with stand: 8.5 kg, without stand: 7.5 kg.

Warning. The BOEI430WU1 panel of the SAMSUNG UE43J5202AU LED TV 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.

REPAIRING / SERVICING TV SAMSUNG UE40NU7100U

Technical description and composition of the SAMSUNG UE40NU7100U TV, type of panel and modules used. Module composition.

SAMSUNG LED
Model: UE40NU7100U

Chassis/Version: FA01

Panel: CY-NN040HGLV2V

LED backlight: LM41-00550A, BN61-15481X

LED driver (backlight): integrated into PSU

PWM LED driver: BD94062F

MOSFET LED driver: TO-252

Power Supply (PSU): BN44-00947A L40E6_NDY

PWM Power: PFC, PWM

MOSFET Power: N-FET TO-220F

MainBoard: BN41-02635B BN94-13264E

IC MainBoard: CPU, eMMC: KLM4G1FEPD, SPI 25Q40, EEPROM: 24C512, DRAM, AUDIO: TAS5749M

Tag: BN40-00331A

Specifications UE40NU7100U
SAMSUNG UE40NU7100U
General recommendations for LCD LED TV repair
Possible defects

- SAMSUNG UE40NU7100U does not turn on, the indicators on the front panel are not lit or blinking. TV does not respond to the control buttons and remote control.

In such cases the problem should be looked for in the circuits of the power supply BN44-00947A. It is necessary to measure the output voltages in its secondary circuits, and in case of their complete absence check the serviceability of the power switches (N-FET TO-220F) and the rectifier diodes for possible breakdown (short circuit).
At breakdown of semiconductors in the secondary circuits of any converter, as a rule, it can operate in the short-circuit emergency mode without output voltages, and at short circuit in the elements of the primary circuit most often the line fuse and more rarely the current sensor at the source of the switch break down at once.
Mos-Fet switches used in switched-mode 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, the screen is black, there is sound, with the external screen light you can sometimes see faintly visible outlines of the image.

Often in such cases there is no backlight of LED panel. Often the reason is a failure of LEDs (breakage, short circuit...), or connectors of LM41-00550A, BN61-15481X, less often faulty is the LED-driver.
To detect breakage in the LED strips without disassembling the panel you will need a power source. Open transitions connected in series can not be done with a simple multimeter, you need a voltage of several tens of volts.

- Indicator is blinking or glowing all the time, TV set doesn't turn on, remote control doesn't respond.

Repair or diagnosis of the motherboard BN41-02635B should begin with checking the stabilizers and power converters needed to power the chips and matrix. If necessary, the software (software) should be updated or replaced. When repairing the MB board, you must check its components CPU, eMMC: KLM4G1FEPD, SPI 25Q40, EEPROM: 24C512, DRAM, AUDIO: TAS5749M. Defective elements should be replaced. If the chips with BGA soldering technology are used, the problem in its implementation is detected by the method of local heating of the chip.

If you suspect the BN40-00331A tuner malfunction, first of all make sure that the software is correct, as well as that the required supply voltages and pulses of data exchange with the CPU via the I2C bus are present at the respective pins of the tuner.

It is necessary to remember! Attempts to repair TV SAMSUNG UE40NU7100U by yourself, in the absence of the necessary skills and experience, is strongly not recommended and is fraught with negative consequences, up to the complete unrepairable device!

More on MainBoard Repair

The exterior of the MainBoard BN41-02635B is shown in the illustration below:

BN41-02635B

MainBoard Appearance

The main features of the SAMSUNG UE40NU7100U:

A matrix (LED panel) CY-NN040HGLV2V is installed.
To power the LED backlight the converter is used, combined with the power supply, controlled by the PWM controller BD94062F. As the power elements of LED-driver are used switches of TO-252 type.
The power supply module BN44-00947A or its analogues with the use of PFC, PWM chips and N-FET TO-220F type power keys form the necessary supply voltages for all the SAMSUNG UE40NU7100U TV assemblies.


MainBoard - the main board (motherboard) is a module BN41-02635B, using CPU chips, eMMC: KLM4G1FEPD, SPI 25Q40, EEPROM: 24C512, DRAM, AUDIO: TAS5749M and others.
The BN40-00331A tuner provides TV program reception and channel tuning.


Instructions and updates


There are download files for UN40NU7100FXZC from the manufacturer:

Latest software updates, firmwares (latest firmwares):
File type File name Version Date Size
Update instructions 2018_TV_Firmware_Upgrade_Instruction_T-KTM2LDEUC.pdf 1.0 23.06.2020 0.5 Mb
Update file (USB) T-KTM2LDEUC.zip 1310.4 02.11.2020 1117.74 Mb
Update file (USB) T-KTM2LDEUC_1310.4.exe 1310.4 02.11.2020 1117.49 Mb

Instruction manuals and User Manuals:
File Type File Name Version Date Size
User manual BN68-08987G-02_UNU7100X_RU_L02_180710.1.pdf 02 13.07.2018 1.22 Mb
BN68-08995L-01_QSG_UNU7100X_CIS_180314.0.pdf 01 23.05.2018 0.3 Mb
Instruction PDF ENG_KM2DVBEUN-3.0.2_181205.0.0.pdf 3.0.2 02.01.2019 11.33 Mb

You can download the files from the manufacturer's website for the model UN40NU7100FXZC


SAMSUNG UE40NU7100U LCD TV CY-NN040HGLV2V, 40" (102 cm) diagonal 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-NN040HGLV2V and MainBoard software BN41-02635B 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 UE40NU7100U has built-in SMART software and Tizen Operating System. Connection to the network can be made via Wi-Fi wireless connection. Supported formats of multimedia files: MP3, WMA, MPEG4, HEVC (H.265), DivX, MKV, JPEG.
The sound speaker system has a capacity of 20 W (2x10 W) and is equipped with two loudspeakers. NICAM stereo sound processing system and Sound Surround surround function are used.
Communication with other devices via an external interface is supported by standard inputs and outputs: antenna input (RF), AV, component, HDMI x3, USB x2, Ethernet (RJ-45), Wi-Fi 802.11ac, Miracast. The digital tuner is capable of receiving DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 TV channels.

The power consumption in mains mode is 105 W. Power supply BN44-00947A.

Overall dimensions: with stand 914x604x210 mm, without stand 914x532x59 mm.

TV weight: with stand: 8.8 kg, without stand: 8.6 kg.

Warning. The panel CY-NN040HGLV2V of the SAMSUNG UE40NU7100U LED TV 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!
Also it is 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.