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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Monday 6 January 2020

REPAIR / SERVICING TV SAMSUNG UE32F5300AK

Technical description and composition of the SAMSUNG UE32F5300AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32F5300AK
Chassis / Version: U85A Ver: AS02
Panel: HF320BGA-B1
LED backlight: D2GE-320SC0-R3 (12,12,27) LUMENS // 2013SVS32F 9 REV1.8, BN41-01969A
T-CON: T320HVN.03.0 CTRL BD 32T36-C08
LED driver (backlight): BN44-00605A
PWM LED driver: SEM5027A
MOSFET LED driver: D9N40, D3N40
Power Supply (PSU): BN44-00605A
PWM Power: S3310 (NCP1200D60)
MOSFET Power: 10NM60N
MainBoard: BN41-01958A BN94-06181P // BN41-01958B
IC MainBoard: CPU: SEMS30, SPI FLASH: W25Q40, SDRAM: K4B2G1646E
Tuner: DNTS403EH105A (BN40-00262A)
Control: Remote: AA59-00793A, IR: BN96-26411H (BN41-01976B)
Technical Specifications UE32F5300
SAMSUNG UE32F5300AK
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should inspect all the internal components of the SAMSUNG UE32F5300AK TV. Many visible changes in the state of the elements make it possible to determine the future direction of the troubleshooting.
If the UE32F5300AK TV does not turn on, does not make any sounds when it is turned on, and also no indicators light up or blink on the front panel, there is a high probability of a malfunction in the BN44-00605A power module, which is made on the same board with the backlight LED power converter ( LED driver).
The 220V AC voltage is rectified by a diode bridge and filtered by electrolytic capacitors, on which a constant voltage of about 300v is formed as a result. The flyback converter, controlled by the S3310 PWM controller, provides the necessary rectified voltages in the secondary circuits of the pulse transformer to power the MainBoard and Led driver. To correct the Power Factor, a passive filter of two counter-parallel chokes at the input of the network is used.
If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in resistors in the stabilization circuits. The PWM controller chip may also cause a breakdown of the power switch of the converter.
If the SAMSUNG UE32F5300AK does not have an image, the sound is there and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the HF320BGA-B1 panel, or their power converter - the LED driver, which is a step-up DC-DC converter. The LED current is stabilized by the SEM5027A PWM controller.
 Sometimes, when turned on, the image appears and immediately disappears. In such cases, it is necessary to check the electrolytic capacitors of the driver power filter, including in the secondary rectifier of the main PSU.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If only one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
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.
Repair of the BN41-01958A motherboard must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
If you suspect a malfunction of the tuner DNTS403EH105A (BN40-00262A), first of all, you need to make sure that there is power at the corresponding terminals and exchange via the I2C control bus.
Remember! Attempts to self-repair by users of the SAMSUNG UE32F5300AK TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
One of the typical SAMSUNG UE32F5300AK faults often occurs in Samsung's HF320BGA-B1 LED panel.
External manifestations: no image, the backlight does not work. The LED driver provides maximum voltage for powering the LEDs. Usually, the LEDs themselves turn out to be faulty, which, when tested, turn out to be either open or with broken internal zener diodes.
The LEDs in this case must be replaced, and the maximum driver current limited by 10-20% according to the bulletin from the manufacturer.


SCHEMATIC --------------->  Samsung Chassis U85A, Models UE32F45****, UE**F53****, UE**F55****, UE**F5700AW

FIRMWARE FOR  SPI FLASH W25Q40 -------------------> SAMSUNG UE32F5300AK U85A, Main: BN41-01958A, Panel: HF320BGA-B1

FOR TYPE SAMSUNG Model: UE32F5300AK, Ver: TSO3, Panel: CY-HF320BGLV1H, MAIN: BN94-06523F,PSU: BN44-00605A; LED backlight: D2GE-320SC0-R3 (12,12,27)

 The appearance of the MainBoard BN41-01958B is shown in the figure below:
BN41-01958B
BN41-01958B can be used in TVs:
SAMSUNG UE39F5500 UE39F5500AK (Panel HF390BGM-C1), SAMSUNG UE32F5300AK (Panel HF320BGA-B1), SAMSUNG UE40F6200AK (Panel CY-HF400BGLV2V), SAMSUNG UE32F4500AK (Panel HF32AGH-R1), SAMSUNG UE42F5300AK (Panel CY-HF420BGAV1V), SAMSUNG UE46F6500 AK (Panel CY-HF400CSLV1V), SAMSUNG UE46F6330AK UE46F6330 (Panel CY-HF460CSLV2V), SAMSUNG UE32F6330 AK (Panel CY-HF320CSLV1V), SAMSUNG UE40F6330AK UE40F6330 (Panel CY-HF400CSLV5V), SAMSUNG UE40F6510AB UE40F6510 (Panel CY-GF400CSLV2V), SAMSUNG UE55F6400AK UE55F6400 (Panel CY-HF550CSLV1V), SAMSUNG UE40F6540AB (Panel CY-GF400CSLV3V), SAMSUNG UE40F6500 UE40F6500SS (Panel CY-GF400CSLV1H), SAMSUNG UE46F6650 UE46F6650AB (Panel CY-GF460CSLV1V), SAMSUNG UE46F6510 UE46F6510AB (Panel CY-GF460CSLV2V), SAMSUNG UE50F6330 UE50F6330AK (Panel HF500CSA-B1).
The appearance of the power supply
Main features of the SAMSUNG UE32F5300AK device:
Installed matrix (LED-panel) HF320BGA-B1.
The matrix control uses the Timing Controller (T-CON) T320HVN.03.0.
The LED driver BN44-00605A is used to power the backlight LEDs, it is controlled by the SEM5027A PWM controller. As power elements of the LED driver, keys of the D9N40, D3N40 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32F5300AK TV are generated by the BN44-00605A power supply module or its analogs using S3310 microcircuits (NCP1200D60) and 10NM60N power switches.
MainBoard - the main board (motherboard) is a BN41-01958A module, using CPU chips: SEMS30, SPI FLASH: W25Q40, SDRAM: K4B2G1646E and others.
The tuner DNTS403EH105A (BN40-00262A) provides the reception of television programs and tuning to channels.
 
Posted By: FRANK at 06:41
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