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 UE46ES8000

Technical description and composition of the SAMSUNG UE46ES8000 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE46ES8000 UE46ES8000S
Chassis / Version: U81A
Panel: LTJ460HQ10-L
LED backlight: Edge LED 46SNB 3D-7032LED-MCPCB-L / R V1LE-460SMA-R3, V1LE-460SMB-R3
T-CON: BN41-01790C 240hz
LED driver (backlight): integrated into PSU
PWM LED driver: SLC5012M
MOSFET LED driver: K8A500D, F9N25
Power Supply (PSU): BN44-00522B
PWM Power: UCC25600, 2A153D (Stb), PC7011F (PFC)
MOSFET Power: K8A50D, MDF11M60 (PFC)
MainBoard: BN41-01800A BN94-05570Y
IC MainBoard: SDP1101, KLM2G1HE3F, RTL8201F, TAS5735, Si9587CNUC
Tuner: BN40-00236B
Control: Remote: AA59-00638A & AA59-00631A, WiFi: WIDT20R BN59-01148C
Technical Specifications UE46ES8000
SAMSUNG UE46ES8000
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE46ES8000 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.
In such cases, the fault should be sought first in the BN44-00522B power supply module. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, check the serviceability of power switches (K8A50D, MDF11M60 (PFC)) and rectifier diodes for possible breakdown (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 keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) UCC25600, 2A153D (Stb), PC7011F (PFC), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
As a rule, in this case, the backlight of the LED panel is faulty. 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.
It is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V for them. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED if you connect the probes in the forward direction, the red probe to the anode, and the 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 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 BN41-01800A 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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - SDP1101, KLM2G1HE3F, RTL8201F, TAS5735, Si9587CNUC and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
If a tuner BN40-00236B 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 voltage levels and impulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
Once again, remind users! Attempts to self-repair a SAMSUNG UE46ES8000 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!


Service manual and schematic diagram ---------------------->  SAMSUNG UE46ES8000 Chassis U81A.



 The appearance of the MainBoard BN41-01800A is shown in the figure below:
BN41-01800A
BN41-01800A can be used in TVs:
SAMSUNG UE40ES7507 UE40ES7507U (Panel LTJ400HL14-L), SAMSUNG UE46ES8007U (Panel LTJ460HQ10-L), SAMSUNG UE55ES8000S UE55ES8000 (Panel LTJ550HQ30-B), SAMSUNG UE40ES8000 UE40ES8000S (Panel LTJ400HL08-B), SAMSUNG UE55ES8005 (Panel LTJ550HQ30-B ).
The appearance of the power supply
Main features of the SAMSUNG UE46ES8000 device:
Installed matrix (LED panel) LTJ460HQ10-L.
The matrix control uses the Timing Controller (T-CON) BN41-01790C.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the SLC5012M PWM controller. As the power elements of the LED driver, keys of the type K8A500D, F9N25 are used.
The formation of the necessary power The appearance of the MainBoard BN41-01800A is shown in the figure below:
BN41-01800A
BN41-01800A can be used in TVs:
SAMSUNG UE40ES7507 UE40ES7507U (Panel LTJ400HL14-L), SAMSUNG UE46ES8007U (Panel LTJ460HQ10-L), SAMSUNG UE55ES8000S UE55ES8000 (Panel LTJ550HQ30-B), SAMSUNG UE40ES8000 UE40ES8000S (Panel LTJ400HL08-B), SAMSUNG UE55ES8005 (Panel LTJ550HQ30-B ).
The appearance of the power supply
Main features of the SAMSUNG UE46ES8000 device:
Installed matrix (LED panel) LTJ460HQ10-L.
The matrix control uses the Timing Controller (T-CON) BN41-01790C.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the SLC5012M PWM controller. As the power elements of the LED driver, keys of the type K8A500D, F9N25 are used.
The necessary supply voltages for all nodes of the SAMSUNG UE46ES8000 television are generated by the BN44-00522B power module or its analogs using UCC25600, 2A153D (Stb), PC7011F (PFC) microcircuits and power switches of the K8A50D, MDF11M60 (PFC) type.
MainBoard - the main board (motherboard) is a BN41-01800A module, using microchips SDP1101, KLM2G1HE3F, RTL8201F, TAS5735, Si9587CNUC and others.
The tuner BN40-00236B provides the reception of television programs and tuning to channels. The voltage for all nodes of the TV SAMSUNG UE46ES8000 is carried out by the power module BN44-00522B, or its analogs using microcircuits UCC25600, 2A153D (Stb), PC7011F (PFC) and power switches of the type K8A50D, MDF11M60 (PFC).
MainBoard - the main board (motherboard) is a BN41-01800A module, using microchips SDP1101, KLM2G1HE3F, RTL8201F, TAS5735, Si9587CNUC and others.
The tuner BN40-00236B provides the reception of television programs and tuning to channels.

Posted By: FRANK at 07:41
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