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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Wednesday 22 January 2020

REPAIR / SERVICING TV SAMSUNG UE65ES8005

Technical description and composition of the SAMSUNG UE65ES8005 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE65ES8005
Chassis / Version: U81A
Panel: CY-LE650DSA V1C
T-CON: BN41-01790C
LED driver (backlight): integrated into PSU; 210V 203mA
Power Supply (PSU): BN44-00539A PD65B2Q_CHS
MainBoard: BN41-01800B BN94-05584R
IC MainBoard: RTL8201F; TAS5735; Si9587CNUC; SDP1101
Tuner: BN40-00238B
Technical Specifications UE65ES8005
SAMSUNG UE65ES8005
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE65ES8005 does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
With such manifestations, the BN44-00539A power module usually fails. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of the power switches of the converters and rectifier diodes for the presence of a possible short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key 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), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
As a rule, in such cases there is no display backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN41-01800B 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 cases of attempts to repair the MB board (SSB), it is necessary to check the serviceability of its elements - RTL8201F; TAS5735; Si9587CNUC; SDP1101 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
If a tuner BN40-00238B 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.
Attention TV owners! Self-repair attempts by SAMSUNG UE65ES8005 are not recommended by the manufacturer and can lead to serious negative consequences!


SCHEMATIC MANUAL ------->  SAMSUNG UE40ES80**, UE46ES80** UE55ES80** UE65ES80** CHASSIS U81A


 The appearance of the MainBoard BN41-01800B is shown in the figure below:
BN41-01800B
BN41-01800B can be used in TVs:
SAMSUNG UE40ES8007U UE40ES8007 (Panel LTJ400HL14-L), SAMSUNG UE40ES7507 UE40ES7507U (Panel LTJ400HL14-L), SAMSUNG UE65ES8005 (Panel CY-LE650DSA V1C).
The appearance of the power supply
Main features of the SAMSUNG UE65ES8005 device:
Installed matrix (LED panel) CY-LE650DSA V1C.
The matrix control uses the Timing Controller (T-CON) BN41-01790C.
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 UE65ES8005 TV is carried out by the power module BN44-00539A, or its analogs.
MainBoard - the main board (motherboard) is a BN41-01800B module, using RTL8201F chips; TAS5735; Si9587CNUC; SDP1101 and others.
The tuner BN40-00238B provides the reception of television programs and tuning to channels.