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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Tuesday 21 January 2020

REPAIR / SERVICING TV SAMSUNG UE50MU6100

Technical description and composition of the SAMSUNG UE50MU6100 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE50MU6100
Chassis / Version: DA01
Panel: CY-GK050HGNVHV
LED backlight: LM41-00253A, LM41-00254A, BN41-02377A
LED driver (backlight): integrated into PSU
PWM LED driver: SLC3011N
Power Supply (PSU): BN44-00807A L55S6_FHS
PWM Power: SPC7011F, FA6A20
MainBoard: BN41-02568B BN94-12432F
IC MainBoard: SDP1601, KLM4G1FEPD, 24512FD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M
Tuner: BN40-00331A DT0S24EH7A
Control: IR: KU6000 BN41-02324C A39955A, Wi-Fi: WCM730Q BN59-01264A
Technical Specifications UE50MU6100U
SAMSUNG UE50MU6100
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE50MU6100 does not turn on, does not respond to buttons and remote control, indicators on the front panel do not light and do not blink.
With such manifestations, in some cases, the BN44-00807A power module is faulty. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches of the converters and rectifier diodes for the probability of a 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 SPC7011F, FA6A20, in the absence of visible damage or obvious short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and all the other functions of the TV work. The image sometimes for a second appears immediately after turning on and disappears.
The most likely in these cases is a malfunction of the LED backlight. The reason may be a break in the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the strings
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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN41-02568B motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements SDP1601, KLM4G1FEPD, 24512FD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M. BGA chip malfunctions are usually easy to detect by warming up.
If there is no reception of television channels, but the TV works properly from external devices, first of all you need to check the voltage of the tuner BN40-00331A DT0S24EH7A and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Attention to users! Self-repair of a SAMSUNG UE50MU6100 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!

Backlight S_KU6K_50_FL30_L7_REV1.1_160215_LM41-00253A, S_KU6K_50_FL30_R6_REV1.1_160215_LM41-00254A, BN41-02377A (BN96-34709A)

The appearance of the MainBoard BN41-02568B is shown in the figure below:
BN41-02568B
The appearance of the power supply
Main features of the SAMSUNG UE50MU6100 device:
Installed matrix (LED-panel) CY-GK050HGNVHV.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SLC3011N PWM controller.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE50MU6100 TV is carried out by the BN44-00807A power module, or its analogs using SPC7011F, FA6A20 microcircuits.
MainBoard - the main board (motherboard) is a BN41-02568B module, using microchips SDP1601, KLM4G1FEPD, 24512FD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M and others.
The tuner BN40-00331A DT0S24EH7A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 08:21
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