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 UE32F5500AK

Technical description and composition of the SAMSUNG UE32F5500AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32F5500AK UE32F5500AW
Chassis / Version: U85A / AS01
Panel: HF320BGA-B1
LED backlight: D2GE-320SC0-R3 (12,12,27) LUMENS
T-CON: T320HVN03.0 CTRL BD 32T36-C08
LED driver (backlight): integrated into PSU
PWM LED driver: SEM5027A
MOSFET LED driver: D9N40, 3N40K
Power Supply (PSU): BN44-00605A PSLF770S05A L32SF_DSM
PWM Power: S3310 (NCP1200D60)
MOSFET Power: 10NM60N, D4186, D4189
MainBoard: BN41-01958A BN94-06295Q
IC MainBoard: CPU: SEMS30, WT61P807, SPI FLASH: W25Q40, SDRAM: K4B2G1646E, SOUND: TA55745
Tuner: DNTS403EH105A BN40-00262A
Control: IR: BN96-26411E (BN41-01976B), Wi-Fi: WIDT-30Q BN59-01161A
Technical Specifications UE32F5500
SAMSUNG UE32F5500AK
General repair guidelines for TV LCD LED
If the TV does not turn on, no control lights are on or blinking, there are no sounds when you turn on, there is not the slightest sign of operability - the most likely malfunction is in the power module. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the filter of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
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 S3310 PWM controller chip can also cause a breakdown of the power switch of the converter.
If there is no image when you turn on the SAMSUNG UE32F5500AK, or it appears and immediately disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the HF320BGA-B1 panel, or in the LED node of the driver-converter of their power supply.
To check the health of the LEDs on the D2GE-320SC0-R3 (12,12,27) LUMENS strips and the contact connections in their power circuit, the panel must be disassembled.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the circuit of the LED lines without disassembling the panels with a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
If the motherboard BN41-01958A BN94-06295Q is faulty, first of all it is necessary to check all the linear stabilizers and power converters of its chips, and also, if necessary, update the software (software). Sometimes you can check the health of MB only by replacement.
In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its CPU chips: SEMS30, SPI FLASH: W25Q40, SDRAM: K4B2G1646E and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If the TV works normally from external devices, but does not tune into television channels, the tuner DNTS403EH105A BN40-00262A may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. Sometimes the cause of the inoperability of the tuner may be a software failure.
Once again, remind users! Attempts to self-repair a SAMSUNG UE32F5500AK TV without the appropriate qualifications and experience can lead to its complete non-repairability!
One of the typical SAMSUNG UE32F5500AK problems 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.

TYPE UE32F5500AK: Panel: T320HVF03.0, Main: BN41-01958B, T-CON: T320HVN03.0 CTRL BD 32T36-C08.

TYPE  UE32F5500AW: Panel: CY-HF320BGSV1V, Main: BN41-01958A BN94-06901E, T-CON: RUNTK 5351TP, Power: BN44-00605A


 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 CY-HF460BGLV2V), SAMSUNG UE46F6400AK (Panel CY-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).
The appearance of the power supply
Main features of the SAMSUNG UE32F5500AK device:
Installed matrix (LED-panel) HF320BGA-B1.
The matrix control uses the Timing Controller (T-CON) T320HVN03.0.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the SEM5027A PWM controller. As power elements of the LED driver, keys of the D9N40, 3N40K type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32F5500AK TV are generated by the BN44-00605A power supply module or its analogs using S3310 microcircuits (NCP1200D60) and power switches of the 10NM60N, D4186, D4189 type.
MainBoard - the main board (motherboard) is a BN41-01958A module, using CPU chips: SEMS30, WT61P807, SPI FLASH: W25Q40, SDRAM: K4B2G1646E, SOUND: TA55745 and others.
Tuner DNTS403EH105A BN40-00262A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 06:50
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