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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Thursday, 2 January 2020

REPAIR / SERVICING TV SAMSUNG UE32C5000

Technical description and composition of the SAMSUNG UE32C5000 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32C5000 UE32C5000QW
Chassis / Version: N92A / CQ04
Panel: LTF320HM02
LED backlight: LJ64-02409B
T-CON: F60MB4C2LV0.6
LED driver (backlight): integrated into PSU; 188.5V 240mA
Power Supply (PSU): BN44-00351B REV. 1.4 PD37AF0E_ZDY
PWM Power: STR-W6052S
MOSFET Power: FDPF5N50T
MainBoard: BN41-01549C BN94-04495S
IC MainBoard: WT61P802, NAND: KFG1G16U2C-DIB6, EEPROM: 24C256, SOUND: NTP7300S
Tuner: BN40-00201A DAG4-K04A
Technical Specifications UE32C5000
SAMSUNG UE32C5000
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE32C5000 TV does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
With such manifestations, a malfunction is most likely to be detected in the BN44-00351B power supply module. It is necessary to measure its output supply voltage, and in case of their absence, check the operability of the power switches (FDPF5N50T) of the converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible key parameters. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers STR-W6052S, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
Usually in such cases there is no backlighting of the LED panel (matrix). The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction 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.
- The indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN41-01549C motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements WT61P802, NAND: KFG1G16U2C-DIB6, EEPROM: 24C256, SOUND: NTP7300S requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
Before replacing the tuner BN40-00201A DAG4-K04A, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Owners and users of the SAMSUNG UE32C5000 TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!


Service manual and schematic diagram -------------->  SAMSUNG UE32C5000 Chassis N92A / CQ04



 The appearance of the MainBoard BN41-01549C is shown in the figure below:
BN41-01549C
The appearance of the power supply
Main features of the SAMSUNG UE32C5000 device:
Installed matrix (LED-panel) LTF320HM02.
The matrix control uses the Timing Controller (T-CON) F60MB4C2LV0.6.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the SAMSUNG UE32C5000 TV are generated by the BN44-00351B power module or its analogs using STR-W6052S microcircuits and FDPF5N50T power switches.
MainBoard - the main board (motherboard) is a BN41-01549C module using WT61P802 chips, NAND: KFG1G16U2C-DIB6, EEPROM: 24C256, SOUND: NTP7300S and others.
The tuner BN40-00201A DAG4-K04A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF320HM02-A01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Frequency: 60Hz
Lamp Type: WLED
Posted By: FRANK at 08:02
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