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 UE46D6100

Technical description and composition of the SAMSUNG UE46D6100 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE46D6100 UE46D6100SW
Chassis / Version: HQ03
Panel: LTJ460HW03-V
LED backlight: BN64-01644A - 2011SVS46-FHD-5K6K-LEFT / RIGHT JVG4-460SMB-R1 (10,11,09)
T-CON: SH120PMB4SV0.3 BN95-00542A; LPF10A1
LED driver (backlight): integrated into PSU; 280V 308mA
PWM LED driver: SEM5025
MOSFET LED driver: MDD5N40
Power Supply (PSU): BN44-00458A - PD46A1D_BSM - PSLF151A03D
PWM Power: D2011K (Standby DIP-8), PC7011F (PFC), FSFR1700XS (PWM)
MOSFET Power: 10NM60N (PFC)
MainBoard: BN41-01604C BN94-05367X
IC MainBoard: SDP1001, SDP94, S4LJ103X
Tuner: BN40-00211A
Control: AA59-00507A; IR: A16729S (BN41-01600a), D550-12C; Bluetooth: WIBT20, BN96-17107B
Technical Specifications UE46D6100
SAMSUNG UE46D6100
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular SAMSUNG UE46D6100SW, it is advisable to start with a careful external examination of internal and external elements. Many visible changes in the state of the elements make it possible to determine the future direction of the troubleshooting. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element outputs, swollen rectifier filter capacitors, charred resistors and other circuit elements.
If the power supply module BN44-00458A - PD46A1D_BSM - PSLF151A03D malfunctions, the external manifestations may be different, for example, SAMSUNG UE46D6100 does not turn on at all and there is no indication of the indicator lights on the front panel. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is checked by replacing it with a known good one.
Sometimes the SAMSUNG UE46D6100 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a possibility of a malfunction of the LED driver - the power converter of the backlight LEDs of the LTJ460HW03-V panel, or an open circuit in the LED circuit is possible. In such cases, first of all, it is necessary to verify the operability of the electrolytic capacitors of the filter by supplying the backlight unit.
The lack of backlight often occurs due to an open circuit in the LED circuit. There is a need for disassembling the panel and checking the LEDs themselves, as well as the same contact connections in the connectors and rations of the terminals.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
Repair or diagnostics of the BN41-01604C BN94-05367X motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update the software (software).
When repairing an MB board, you must check its components SDP1001, SDP94, S4LJ103X. Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating.
In the absence of tuning to local television channels, you should make sure that the software is correct, as well as the presence of supply voltages at the terminals of the tuner BN40-00211A.
Once again, remind users! Attempts to self-repair a SAMSUNG UE46D6100 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
UE46D6100SW. Ver - HQ03, Panel: LTJ460HW03-L
Main: BN41-01604C BN94-05367X
T-con SH120PMB4SV0.3 LSJ460HW01-S BN41-01743A
PSU: BN44-00458A PD46A1D_BSM PSLF151A03D
Leds: BN64-01644A = 2011SVS46-FHD-5K6K-RIGHT / LEFT JVG4-460SMB-R1 (10,11,09)

The appearance of the MainBoard BN41-01604C is shown in the figure below:
BN41-01604C
BN41-01604C can be used in TVs:
SAMSUNG UE40D6100SW (Panel LTJ400HV03-L ), SAMSUNG UE37D6100 SW (Panel LD370CGB-C2), SAMSUNG UE46D6100 UE46D6100SW (Panel LTJ460HW03-V), SAMSUNG UE32D6100SW (Panel LD320CGC-C2), SAMSUNG UE40D6100SWXRU (Panel LTJ400HV06-L).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the BN44-00458A module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the PC7011F PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the mains capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the SAMSUNG UE46D6100 device:
Installed matrix (LED-panel) LTJ460HW03-V.
The matrix control uses the Timing Controller (T-CON) SH120PMB4SV0.3.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the SEM5025 PWM controller. As power elements of the LED driver, keys of the MDD5N40 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE46D6100 TV are generated by the BN44-00458A power supply module or its analogs using D2011K (Standby DIP-8), PC7011F (PFC), FSFR1700XS (PWM) microcircuits, and 10NM60N (PFC) type power switches.
MainBoard - the main board (motherboard) is a module BN41-01604C, using microchips SDP1001, SDP94, S4LJ103X and others.
The tuner BN40-00211A provides the reception of television programs and tuning to channels.