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 UE32J4500

Technical description and composition of the SAMSUNG UE32J4500 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32J4500 UE32J4500AK
Chassis / Version: CA02
Panel: CY-JJ032AGHVEV
LED backlight: SVS32 HD FCOM 5LEDS REV2.2 160925 LM41-00463A
T-CON: ST3151A05-E-XC-2; CSH11-C0H, BBA7SH, GT432B-2ZL
LED driver (backlight): integrated into MainBoard
PWM LED driver: BD9397EFV
Power Supply (PSU): Adapter 19V
MainBoard: BN41-02360B BN94-08207F
IC MainBoard: S24C256, DRV612, TAS5747, KLM4G1FEPD, 25Q40CLSIP, H5TQ4G63CFR
Tuner: BN40-00316A DNTS403H5A
Control: Wi-Fi: WDF710Q BN59-01196C IR: BN41-02398A, Remote: BN59-01199G
Technical Specifications UE32J4500AW
SAMSUNG UE32J4500
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32J4500 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.
In some of these cases, the main switching power supply, the Adapter 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. It is necessary to measure its output supply voltages, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
In case of breakdowns of semiconductors in the 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 power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback (OOS) stabilization circuits. PWM controllers (PWM), if they do not have visible damage to the chassis and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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 indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
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). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - S24C256, DRV612, TAS5747, KLM4G1FEPD, 25Q40CLSIP, H5TQ4G63CFR with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Malfunction of the tuner BN40-00316A DNTS403H5A is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
TV users and owners need to remember that attempts to self-repair a SAMSUNG UE32J4500 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!


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 UE32J4500 device:
Installed matrix (LED-panel) CY-JJ032AGHVEV.
The matrix control uses the Timing Controller (T-CON) ST3151A05-E-XC-2 ;.
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 UE32J4500 TV, an external adapter 19V type source is used.
MainBoard - the main board (motherboard) is a BN41-02360B module, using S24C256, DRV612, TAS5747, KLM4G1FEPD, 25Q40CLSIP, H5TQ4G63CFR and other chips.
The tuner BN40-00316A DNTS403H5A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:55
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