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 UE49MU6100

Technical description and composition of the SAMSUNG UE49MU6100 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE49MU6100 UE49MU6100U
Chassis / Version: FA01
Panel: CY-GM049HGLV1V
LED backlight: LM41-00335A & BN96-40782A S_KU6.3K_49_FL30
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00807F L55S6R_MHS
MainBoard: BN41-02568B BN94-12439F
IC MainBoard: SDP1601, KLM4G1FEPD, 24512FD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M
Tuner: BN40-00331A
Control: IR: KU6000 BN41-02324C A39955A, Wi-Fi: WCM730Q BN59-01264A
Technical Specifications UE49MU6100U
SAMSUNG UE49MU6100
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE49MU6100 does not turn on, does not respond to buttons and remote control, indicators on the front panel do not light up and do not blink.
With such manifestations, in some cases, the BN44-00807F 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 of semiconductors in secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits are usually checked by replacement 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.
Usually in such cases there is no backlight LED-panel (matrix). The reason can sometimes be in the power of the LEDs, but more often in their malfunction (breakdown or break), sometimes in the violation of the contact connections of the LED strips.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can test each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN transition is indirectly indicative of a LED-a
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
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). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - SDP1601, KLM4G1FEPD, 24512FD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
If a tuner BN40-00331A is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary supply voltage levels and data exchange pulses with the processor via the I2C bus on the corresponding tuner pins.
Once again, remind users! Attempts to self-repair a SAMSUNG UE49MU6100 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!

Remote: RMCSPM1AP1 BN59-01274A.

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 UE49MU6100 device:
Installed matrix (LED panel) CY-GM049HGLV1V.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE49MU6100 TV is carried out by the BN44-00807F power module, or its analogues.
MainBoard - the main board (motherboard) is a BN41-02568B module, using microchips SDP1601, KLM4G1FEPD, 24512FD, 25Q40CLSIP, 25Q80DVSIG, TAS5749M and others.
The tuner BN40-00331A provides the reception of television programs and tuning to channels.


Posted By: FRANK at 07:19
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