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 17 January 2020

REPAIR / SERVICING TV SAMSUNG UE46F6100AK

Technical description and composition of the SAMSUNG UE46F6100AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE46F6100AK UE46F6100
Chassis / Version: U88A
Panel: CY-HF460CSLV1V
T-CON: BN41-01939C LSF460HJ02
LED driver (backlight): integrated into MainBoard
PWM LED driver: SLC2013M
MOSFET LED driver: KF9N25D
Power Supply (PSU): BN44-00623B L46X1Q_DHS
PWM Power: D2011K (Standby), SPC7011 (PFC), FSFR1800HSL
MOSFET Power: STF13NM60
MainBoard: BN41-01954B BN94-07077L
IC MainBoard: CPU: SENK13; EEPROM: 24C256, SPI FLASH: 25Q40, SOUND: NTP-7412S
Tuner: GT2CX-3S / K3S BN40-00262B
Control: AA59-00786A, AA59-00775A
Technical Specifications UE46F6100
SAMSUNG UE46F6100AK
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE46F6100AK 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.
Failure in such cases should begin to be sought in the power supply circuits BN44-00623B. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches (STF13NM60) and rectifier diodes of converters for possible 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.
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 parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers D2011K (Standby), SPC7011 (PFC), FSFR1800HSL, in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new, or obviously working.
- 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.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. 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.
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. Usually, 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.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the BN41-01954B 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). Board repair and replacement of CPU chips: SENK13; EEPROM: 24C256, SPI FLASH: 25Q40, SOUND: NTP-7412S are manufactured with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If there is no reception of television channels, but the TV is working properly from external devices, first of all you need to check the voltage of the tuner GT2CX-3S / K3S BN40-00262B and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Attention to users! Self-repair of a SAMSUNG UE46F6100AK TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!

Service manual and schematic diagram -------> SAMSUNG UE32F6100AW, UE40F6100AW, UE46F6100AW, UE55F6100AW Chassis U88A.



 The appearance of the MainBoard BN41-01954B is shown in the figure below:
BN41-01954B
BN41-01954B can be used in TVs:
SAMSUNG UE32F6100 UE32F6100AK (Panel HF320CSA-B1), SAMSUNG UE46F6100AK UE46F6100 (Panel CY-HF460CSLV1V).
The appearance of the power supply
Main features of the SAMSUNG UE46F6100AK device:
Installed matrix (LED panel) CY-HF460CSLV1V.
The matrix control uses the Timing Controller (T-CON) BN41-01939C.
To power the backlight LEDs, a converter is used, combined with the main board BN41-01954B, is 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 UE46F6100AK TV are generated by the BN44-00623B power module or its analogs using D2011K (Standby), SPC7011 (PFC), FSFR1800HSL microchips and power switches of the STF13NM60 type.
MainBoard - the main board (motherboard) is a BN41-01954B module, using CPU chips: SENK13; EEPROM: 24C256, SPI FLASH: 25Q40, SOUND: NTP-7412S and others.
The tuner GT2CX-3S / K3S BN40-00262B provides the reception of television programs and tuning to channels.


Posted By: FRANK at 08:03
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