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 31 December 2019

REPAIR / SERVICING TV SAMSUNG UE32J4710AK

Technical description and composition of the SAMSUNG UE32J4710AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32J4710AK
Chassis / Version: CA01
Panel: CY-JJ032AGHV6V
LED backlight: LM41-00353A, LM41-00353A
LED driver (backlight): integrated into MainBoard
PWM LED driver: BD9397EFV
Power Supply (PSU): Adapter 19V
MainBoard: BN41-02360B BN94-08207B
IC MainBoard: K4B2G1646Q, TAS5747, 25Q40CLSIP, S24C256
Tuner: BN40-00316A DNTS403H5A
Control: IR: BN41-02398A REV1.3, WiFi: BN59-01196C WDF710Q
Technical Specifications UE32J4710AK
SAMSUNG UE32J4710AK
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE32J4710AK TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
Most often, with such manifestations, the main adapter power module is faulty.
This TV model is equipped with an external power adapter type Adapter 19V, which the owner can purchase independently, and repairing it may not always be advisable, however, sometimes there is a certain sense to open it and eliminate simple typical defects typical of IPS. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches and rectifier diodes of the converters for a probable short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during short circuit in the elements of the primary circuit, the mains fuse usually 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 circuits are usually checked by replacement with new ones, or known to be working.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
Failure in most such cases is detected in the nodes and backlight elements of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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 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 BN41-02360B 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). Board repair and replacement of K4B2G1646Q, TAS5747, 25Q40CLSIP, S24C256 microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Before replacing the tuner BN40-00316A DNTS403H5A, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Attention! Users and owners of UE32J4710AK TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.

The appearance of the MainBoard BN41-02360B is shown in the figure below:
BN41-02360B
BN41-02360B can be used in TVs:
SAMSUNG UE32J5200AK (Panel CY-JJ032BGLV1V), SAMSUNG UE32J5205AK UE32J5205 (Panel CY-JJ032BGLV6V), SAMSUNG UE32J4500 UE32J4500AK (Panel CY-JJ032AGHVEV).
Main features of the SAMSUNG UE32J4710AK device:
Installed matrix (LED-panel) CY-JJ032AGHV6V.
To power the backlight LEDs, a converter is used, combined with the main board BN41-02360B, controlled by the BD9397EFV PWM controller.
To power all internal components of the SAMSUNG UE32J4710AK TV, an external adapter 19V type source is used.
MainBoard - the main board (motherboard) is a BN41-02360B module, using K4B2G1646Q, TAS5747, 25Q40CLSIP, S24C256 and others.
The tuner BN40-00316A DNTS403H5A provides the reception of television programs and tuning to channels.

Posted By: FRANK at 07:53
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