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, 7 January 2020

REPAIR / SERVICING TV SAMSUNG UE32H5000AK

Technical description and composition of the SAMSUNG UE32H5000AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32H5000AK UE32H5000
Chassis / Version: U8AA / U8AB
Panel: CY-GH032BGLV1V
T-CON: BN41-02111 / T320HVN05.0 (32T42-C02)
LED driver (backlight): integrated into PSU; 101V 450mA
PWM LED driver: 7014X
Power Supply (PSU): BN44-00697A
PWM Power: S3330 = FAN6755W
MOSFET Power: 60R580P
MainBoard: BN41-02098B BN94-07136F
IC MainBoard: F59L1G81A, 25Q40CLSIP, S24C256, K4B2G1646Q-BCKO, NTP7414
Tuner: BN40-00294A DNTS243EH286A
Technical Specifications UE32H5000
SAMSUNG UE32H5000AK
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32H5000AK 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.
In such cases, the fault should be sought first in the BN44-00697A power supply module. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, it is necessary to check the serviceability of power switches and rectifier diodes for possible breakdown (short circuit).
In case of breakdowns of diodes 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) S3330 = FAN6755W, 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 and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
Often in such cases, there is no LED backlight. 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 LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the 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 BN41-02098B motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit 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 - F59L1G81A, 25Q40CLSIP, S24C256, K4B2G1646Q-BCKO, NTP7414 and replace the 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 the TV works normally from external devices, but does not tune into television channels, the tuner BN40-00294A DNTS243EH286A may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
TV users and owners need to remember that attempts to self-repair a SAMSUNG UE32H5000AK TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!


Service manual and schematic diagram ------------->  SAMSUNG UE32H5000AK Chassis U8AA / U8AB.



 The appearance of the MainBoard BN41-02098B is shown in the figure below:
BN41-02098B
BN41-02098B can be used in TVs:
SAMSUNG UE32H4270AU UE32H4270 (Panel HH032AGH-R1), SAMSUNG LT24D310ES (Panel V236BJ1-LE2), SAMSUNG UE40H5000AK (Panel CY-GH040BGLV1V), SAMSUNG UE48H5270AU UE48H5270 (Panel CY-GH048BGLV1V), SAMSUNG UE32H4290AU UE32H4290 (Panel HH032AGH-R2), SAMSUNG UE40H5290AU UE40H5290 (Panel CY-GH040BGLV1V), SAMSUNG UE40J5000AU UE40J5000 (Panel CY-JJ040BGNV2V), SAMSUNG UE40H5020 UE40H5020AK (Panel CY-GH040BGSV1V), SAMSUNG UE40J5100AU (Panel CY-GH040BGSR1V), SAMSUNG T31D310EW (Panel CY-HH032AGSV1H), SAMSUNG UE48J5000AU (Panel CY-JJ048BGEV5V), SAMSUNG UE32H5020AK (Panel CY-GH032BGLV4V), SAMSUNG UE40J5120AU (Panel CY-GH040BGSV1V), SAMSUNG LT32E310EX T32E310EX (Panel CY-GJ032BGEV1V), SAMSUNG UE40H5270 UE40H5270AU (Panel CY-GH048BGLV1V), SAMSUNG UE32J5100AK UE32J5100 (Panel CY-GH032BGSV1V), SAMSUNG UE32H5000AK UE32H5000 (Panel CY-GH032BGLV1V), SAMSUNG UE48H5000 UE48H5000AK (Panel CY-GH048CSLV1V), SAMSUNG UE32J5120AK UE32J5120 (Panel CY-GH032BGSV1V).
The appearance of the power supply
Main features of the SAMSUNG UE32H5000AK device:
Installed matrix (LED panel) CY-GH032BGLV1V.
The matrix control uses the Timing Controller (T-CON) BN41-02111.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a 7014X PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE32H5000AK TV are generated by the BN44-00697A power module or its analogs using S3330 = FAN6755W microcircuits and 60R580P type power switches.
MainBoard - the main board (motherboard) is a BN41-02098B module, using chips F59L1G81A, 25Q40CLSIP, S24C256, K4B2G1646Q-BCKO, NTP7414 and others.
The tuner BN40-00294A DNTS243EH286A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:17
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