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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Thursday, 16 January 2020

REPAIR / SERVICING TV SAMSUNG UE43J5500

Technical description and composition of the SAMSUNG UE43J5500 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE43J5500 UE43J5500AU
Chassis / Version: GJ043BGA-B1
Panel: T430HVF01.0
LED backlight: S_5J55_43_FL_L7_REV1.2_150827_LM41-00117X, S_5J55_43_FL_R4_REV1.2_150827_LM41-00117W
T-CON: T430HVN01.6 Ctrl BD
LED driver (backlight): integrated into PSU
PWM LED driver: 7014X
MOSFET LED driver: KF3N40W, 5N40
Power Supply (PSU): BN44-00703G L48S1_FSM REV1.3
PWM Power: S3051 (PFC), FA6A20
MOSFET Power: 14NM50N, 13N60M2
MainBoard: BN41-02353B BN94-09121P
IC MainBoard: CPU: SDP1415, EMMC: THGBMBG5D1KBAIT, RAM: K4B4G16460-BCMA
Tuner: BN40-00318B
Control: IR: BN41-02347A WIFI: WIDT30Q BN59-01174D
Technical Specifications UE43J5500AW
SAMSUNG UE43J5500
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE43J5500 TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
With similar manifestations, in some cases, the BN44-00703G power module is 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, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM chips S3051 (PFC), FA6A20 are usually checked by replacing with new, or obviously working.
- There is no image, there is sound, there is a reaction to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
Failure in most such cases is detected in the nodes and 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 strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - CPU: SDP1415, EMMC: THGBMBG5D1KBAIT, RAM: K4B4G16460-BCMA and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
If the TV works normally from external devices, but does not tune into television channels, the tuner BN40-00318B 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.
We recommend the owners of the UE43J5500 TV for repair only to qualified specialists with the necessary work experience! Attempts to repair it yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!

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 UE43J5500 device:
Installed matrix (LED panel) T430HVF01.0.
The matrix control uses the Timing Controller (T-CON) T430HVN01.6.
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 UE43J5500 TV are generated by the BN44-00703G power supply module or its analogs using S3051 (PFC), FA6A20 microchips and 14NM50N, 13N60M2 type power switches.
MainBoard - the main board (motherboard) is a BN41-02353B module, using CPU chips: SDP1415, EMMC: THGBMBG5D1KBAIT, RAM: K4B4G16460-BCMA and others.
The tuner BN40-00318B provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:42
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