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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Wednesday, 8 January 2020

REPAIR / SERVICING TV SAMSUNG UE39F5300AK

Technical description and composition of the SAMSUNG UE39F5300AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE39F5300AK UE39F5300
Chassis / Version: Ver: CS01
Panel: HF390BGM-C1
LED backlight: D2GE-390SCA (B) -R3 (12,12,28), BN96-26928A, BN41-02027A
T-CON: V390HJ4-CE1
LED driver (backlight): integrated into PSU; 136 / 182V 280mA, 147 / 195V 280mA
PWM LED driver: MAP3312B
MOSFET LED driver: AOD9N40, AOD5N40
Power Supply (PSU): BN44-00645A (L42S1_DSM)
PWM Power: SEM3110A, SQD2011K (Standby), SEM3050 (PFC)
MOSFET Power: STD14NM50N, STF13NM60 (PFC)
MainBoard: BN41-01958A BN94-06181Y
IC MainBoard: SEMS30, SPI FLASH: W25Q40, SDRAM: K4B2G1646E
Tuner: BN40-00262A DNTS403EH105A
Control: IR: BN96-26411N (BN41-01976B)
Technical Specifications UE39F5300
SAMSUNG UE39F5300AK
General repair guidelines for TV LCD LED
A malfunction of the power supply is often manifested corny - the TV does not turn on, does not make any sounds, does not light up and does not blink with any indicators. In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Options are STD14NM50N, STF13NM60 (PFC).
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller SEM3110A, SQD2011K (Standby ), SEM3050 (PFC), which can only be checked by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If there is no image when you turn on the SAMSUNG UE39F5300AK, or it appears and immediately disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the HF390BGM-C1 panel, or in the LED node of the driver-converter of their power supply.
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 one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
To open all the junctions, several tens of volts or more are necessary, and it is best to use a current source for such purposes. An open in the LED lines connected in series cannot be detected with a multimeter or tester without disassembling the panel. In the open panel, it is necessary to check each LED. If your multimeter cannot open the LED transitions in forward bias, then see the presence of the PN transition of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
In cases of attempts to repair the BN41-01958A BN94-06181Y motherboard, it is necessary to check the operability of the linear stabilizers and power converters of its microcircuits and, if possible, update the software (software). BGA chips can sometimes be diagnosed by local heating.
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements SEMS30, SPI FLASH: W25Q40, SDRAM: K4B2G1646E requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
If a tuner BN40-00262A DNTS403EH105A 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 supply voltage levels and data exchange pulses with the processor via the I2C bus on the corresponding tuner pins.
Remember! Attempts to self-repair by users of the SAMSUNG UE39F5300AK TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!



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

PSU SCHEMATIC ----------> BN44-00645A Power Supply schematic diagram



 The appearance of the MainBoard BN41-01958A is shown in the figure below:
BN41-01958A
BN41-01958A can be used in TVs:
SAMSUNG UE39F5500 UE39F5500AK (Panel HF390BGM-C1), SAMSUNG UE32F5300AK (Panel HF320BGA-B1), SAMSUNG UE32F6200 UE32F6200AK (Panel CY-HF320BGLV2V), SAMSUNG UE42F5500AK (Panel HF420BGA-B1), SAMSUNG UE32F4500AK (Panel HF32AGH-R1), SAMSUNG UE32F5500AK UE32F5500AW (Panel HF320BGA-B1), SAMSUNG UE40F6400 UE40F6400AK (Panel CY-HF400CSLV2V), SAMSUNG UE42F5300AK (Panel CY-HF420BGAV1V), SAMSUNG UE32F6400AK UE32F6400 (Panel HF320CSA-B1), SAMSUNG UE39F5300AK UE39F5300 (Panel HF390BGM-C1), SAMSUNG UE46F6200AK (Panel CY-HF460BGLV2V), SAMSUNG UE46F6400AK (Panel СY-HF460CSLV2V), SAMSUNG UE46F6540AB (Panel CY-GF460CSLV3V), SAMSUNG UE40F6540AB (Panel CY-GF400CSLV3V), SAMSUNG UE40F6650 UE40F6650AB (Panel CY-GF400CSLV1V), SAMSUNG UE32F6540 (Panel CY-HF320CSLV3V), SAMSUNG UE46F5300 UE46F5300AK (Panel CY-HF460BGLV1V), SAMSUNG UE32F6800 UE32F6800AB (Panel CY-HF320CSLV1V).
PSU Advanced
The power module BN44-00645A is made using the Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced by the device into the mains. The PFC assembly is a Step-Up Converter based on the SEM3050 PWM controller, which evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of an increased voltage (about + 380V) in the operation mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the SAMSUNG UE39F5300AK device:
Installed matrix (LED panel) HF390BGM-C1.
The matrix control uses the Timing Controller (T-CON) V390HJ4-CE1.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the MAP3312B PWM controller. As power elements of the LED driver, keys of the type AOD9N40, AOD5N40 are used.
The necessary supply voltages for all nodes of the SAMSUNG UE39F5300AK television are generated by the BN44-00645A power supply module or its analogs using SEM3110A, SQD2011K (Standby), SEM3050 (PFC) microcircuits and power switches of the STD14NM50N, STF13NM60 (PFC) type.
MainBoard - the main board (motherboard) is a module BN41-01958A, using chips SEMS30, SPI FLASH: W25Q40, SDRAM: K4B2G1646E and others.
Tuner BN40-00262A DNTS403EH105A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 06:34
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