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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Saturday 11 January 2020

REPAIR / SERVICING TV SAMSUNG UE40J5500AU

Technical description and composition of the SAMSUNG UE40J5500AU TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40J5500AU
Chassis / Version: Ver: HS04
Panel: CY-GJ040BGSV5V // CY-GJ040BGSV1V
LED backlight: D4GE-400DCA-R2 (14.03.17), D4GE-400DCB-R2 (14.03.17)
T-CON: RUNTK5538TP ZA
LED driver (backlight): integrated into PSU
PWM LED driver: 7014X
Power Supply (PSU): BN44-00703G L48S1_FSM
PWM Power: S3051 (PFC), FA6A20 (PWM resonant)
MOSFET Power: 13N60M2 (PFC), 14NM50N
MainBoard: BN41-02353B BN94-09121K
IC MainBoard: SPI Flash: W25Q40; EEPROM: 24C512
Tuner: BN40-00318B
Control: WiFi: WIDT30Q BN59-01174D
Technical Specifications UE40J5500AU
SAMSUNG UE40J5500AU
General repair guidelines for TV LCD LED
In cases where the SAMSUNG UE40J5500AU TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operability when turning on, the BN44-00703G L48S1_FSM power supply module is most likely to be faulty or there is no standby power. When diagnosing and repairing the power supply, first of all, replace the swollen filter capacitors of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
The breakdown of the power switch of the pulse converter is often triggered by other elements, for example, in the stabilization or control circuits of this switch, as well as by the damper elements in its drain and TPI winding.
If the image appears and immediately disappears when the TV is turned on, or it is initially absent when it is turned on, but the sound has other functions, there is a high probability of a malfunction of the display backlight LEDs or the LED driver (power converter of the backlight unit CY-GJ040BGSV1V).
A malfunction in the backlight circuits often occurs due to a break in the power supply lines of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the soldering of their terminals, as well as the reliability of the connections in the connectors and the soldering of the terminals.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as a health indicator. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
If the motherboard BN41-02353B BN94-09121K is faulty, first of all it is necessary to check all the linear stabilizers and power converters of its chips, and also, if necessary, update the software (software). Sometimes you can check the health of MB only by replacement.
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Check or replace SPI Flash elements: W25Q40; EEPROM: 24C512 requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
If you suspect a malfunction of the tuner BN40-00318B, first of all, you need to verify the correctness of the software, as well as the presence of the necessary voltage levels and impulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
We recommend the owners of the UE40J5500AU TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
SAMSUNG Version UE40J5500AU Ver: HS01; Panel: CY-GJ040BGSLV1V, Main: BN41-02353B BN94-09121K,
T-CON RUNTK 5538TP ZA 52B07, PSU BN44-00703G L48S1_ESM,
Led Backlight: D4GE-400DCA-R2 (14.03.17), D4GE-400DCB-R2 (14.03.17), BN41-02172A (BN96-30417A),
IR: BN41-02437A, Wi-Fi: WIDT30Q BN59-01174D, Bluetooth: BN96-30218F WIBT40A.

 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 UE40J5500AU device:
Installed matrix (LED-panel) CY-GJ040BGSV5V or CY-GJ040BGSV1V.
The matrix control uses the Timing Controller (T-CON) RUNTK5538TP.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a 7014X PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE40J5500AU TV are generated by the BN44-00703G power supply module or its analogs using S3051 (PFC), FA6A20 (PWM resonant) microcircuits and 13N60M2 (PFC), 14NM50N power switches.
MainBoard - the main board (motherboard) is a BN41-02353B module, using SPI Flash chips: W25Q40; EEPROM: 24C512 and others.
The tuner BN40-00318B provides the reception of television programs and tuning to channels.
Posted By: FRANK at 08:24
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