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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Friday 12 March 2021

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.