REPAIRING AND NOT THROWING AWAY

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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Sunday, 12 January 2020

REPAIR / SERVICING TV SAMSUNG UE40J6200AU

Technical description and composition of the SAMSUNG UE40J6200AU TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40J6200AU UE40J6200
Panel: CY-GH040CSLV8V
T-CON: BN41-02110A LSF400HF04
LED driver (backlight): integrated into PSU
PWM LED driver: 7014X
MOSFET LED driver: KF3N40W, 5N40
Power Supply (PSU): BN44-00703G L48S1_FSM PSLF121S07A
PWM Power: S3051 (PFC), FA6A20
MOSFET Power: 14NM50N, 13N60M2
MainBoard: BN41-02353B BN94-09093P
IC MainBoard: CPU: SDP1415, EMMC: THGBMBG5D1KBAIT, RAM: K4B4G16460-BCMA
Tuner: BN40-00318A (DNTS243H5A)
Control: IR: BN41-02149A, Wi-Fi Module: BN59-01174D
Technical Specifications UE40J6200AU
SAMSUNG UE40J6200AU
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE40J6200AU TV does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
In such cases, the BN44-00703G power supply is usually faulty. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches (14NM50N, 13N60M2) and rectifier diodes for a probable short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible key parameters. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers S3051 (PFC), FA6A20, in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
In such cases, the most likely malfunction of the backlight elements of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights up constantly or blinks.
Repair or diagnostics of the BN41-02353B motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update or replace the software (software). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the CPU elements: SDP1415, EMMC: THGBMBG5D1KBAIT, RAM: K4B4G16460-BCMA. BGA chip malfunctions are usually easy to detect by warming up.
If the TV works normally from external devices, but does not tune into television channels, the tuner BN40-00318A (DNTS243H5A) may be malfunctioning. 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 cause of the inoperability of the tuner may be a software failure.
Attention! For users and owners of UE40J6200AU TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.



The appearance of the MainBoard BN41-02353B is shown in the figure below:
BN41-02353B
BN41-02353B can be used in TVs:
SAMSUNG UE40J6390 (Panel CY-GH040CSLV1V), SAMSUNG UE40J5530AU UE40J5530 (Panel CY-GJ040BGSV5V), SAMSUNG UE40J5500AU (Panel CY-GJ040BGSV5V), SAMSUNG UE40J5550 UE40J5550AU (Panel CY-GJ040BGSV1V), SAMSUNG UE40J6330AU (Panel CY-GH040CSLVFV), SAMSUNG UE32J6300 UE32J6300AU (Panel CY-GH032CSLV5V), SAMSUNG UE48J6200AU (Panel CY-GH048CSLVAV), SAMSUNG UE48J5510AU (Panel CY-GJ048BGLV3V), SAMSUNG UE32J6500AU UE32J6500 (Panel CY-WJ032CGLV2V), SAMSUNG UE40J5520AU UE40J5520 (Panel CY-GJ040BGSV5V), SAMSUNG UE43J5500 UE43J5500AU (Panel T430HVF01.0), SAMSUNG UE40J6200AU UE40J6200 (Panel CY-GH040CSLV8V), SAMSUNG UE32J5550AU UE32J5550 (Panel CY-GJ032BGAB3V), SAMSUNG UE32J5500AU (Panel T320HVF05.5), SAMSUNG UE40J6590 UE40J6590AU (Panel CY-WJ040CGLV1V), SAMSUNG UE40J5510AU (Panel CY-GJ040BGSV3V).
The appearance of the power supply
Main features of the SAMSUNG UE40J6200AU device:
Installed matrix (LED panel) CY-GH040CSLV8V.
The matrix control uses the Timing Controller (T-CON) BN41-02110A.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a 7014X PWM controller. As the power elements of the LED driver, keys of the type KF3N40W, 5N40 are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40J6200AU TV are generated by the BN44-00703G power supply module or its analogs using S3051 (PFC), FA6A20 microchips and power switches of the 14NM50N, 13N60M2 type.
MainBoard - the main board (motherboard) is a BN41-02353B module, using CPU chips: SDP1415, EMMC: THGBMBG5D1KBAIT, RAM: K4B4G16460-BCMA and others.
The tuner BN40-00318A (DNTS243H5A) provides the reception of television programs and tuning to channels.
Posted By: FRANK at 06:38
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