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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Friday 10 January 2020

REPAIR / SERVICING TV SAMSUNG UE40F6130AK

Technical description and composition of the SAMSUNG UE40F6130AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40F6130AK UE40F6130
Chassis / Version: UH02
Panel: CY-HF400CSLV2V
LED backlight: D2GE-400SCB-R3 [12,12,28]; D2GE-400SCA-R3 [12,12,28] LED 3535 = A127CECEBUP8
T-CON: CY-HF400CSLV2V
LED driver (backlight): integrated into PSU
PWM LED driver: SLC2013M
MOSFET LED driver: KF9N25D
Power Supply (PSU): BN44-00622B
PWM Power: FSFR1800HS, SPC7011F (PFC = FA5695N), SQD3011K (STR3A161HD)
MOSFET Power: STF13NM60
MainBoard: BN41-01954A BN94-07063C
IC MainBoard: CPU: SENK13; EEPROM: 24C256, SPI FLASH: 25Q40, SOUND: NTP-7412S
Tuner: BN40-00262B
Technical Specifications UE40F6130
SAMSUNG UE40F6130AK
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE40F6130AK does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
With such manifestations, a malfunction is most likely to be detected in the BN44-00622B power module. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is first necessary to check the power switches (STF13NM60) and rectifier diodes for a possible partial or complete breakdown.
In case of breakdowns in the secondary circuits, the converter can emergencyly operate 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, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip FSFR1800HS, SPC7011F (PFC = FA5695N), SQD3011K (STR3A161HD) can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
In most cases, a malfunction is caused by a lack of display backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
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 BN41-01954A 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). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its CPU chips: SENK13; EEPROM: 24C256, SPI FLASH: 25Q40, SOUND: NTP-7412S and other possible defective components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before replacing the tuner BN40-00262B, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and necessary qualifications! Trust the repair to professionals with sufficient experience in the repair of electronic equipment.



The appearance of the MainBoard BN41-01954A is shown in the figure below:
BN41-01954A
BN41-01954A can be used in TVs:
SAMSUNG UE40F6100AK (Panel CY-HF400CSLV2V), SAMSUNG UE32F6100 UE32F6100AK (Panel HF320CSA-B1), SAMSUNG UE50F6130 UE50F6130AK (Panel HF500CSA-B2), SAMSUNG UE40F6130AK UE40F6130 (Panel CY-HF400CSLV2V).
The appearance of the power supply
Main features of the SAMSUNG UE40F6130AK device:
Installed matrix (LED panel) CY-HF400CSLV2V.
The matrix control uses the Timing Controller (T-CON) CY-HF400CSLV2V.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the SLC2013M PWM controller. As the power elements of the LED driver, keys of the KF9N25D type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40F6130AK TV are generated by the BN44-00622B power module or its analogs using the FSFR1800HS, SPC7011F (PFC = FA5695N), SQD3011K (STR3A161HD) microcircuits, and STF13NM60 type power switches.
MainBoard - the main board (motherboard) is a BN41-01954A module, using CPU chips: SENK13; EEPROM: 24C256, SPI FLASH: 25Q40, SOUND: NTP-7412S and others.
The tuner BN40-00262B provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:05
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