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 UE32H5303AK

Technical description and composition of the SAMSUNG UE32H5303AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32H5303AK UE32H5303
Chassis / Version: TS01
Panel: CY-DF320BGLV1V LSF320HN02-A01
LED backlight: D3GE-320SM1-R2 [07/13/10]
T-CON: BN41-01938B BN95-00854A
LED driver (backlight): with integrated PSU
PWM LED driver: 7014x
Power Supply (PSU): BN44-00768A PSLF780H06A
PWM Power: S3310 (NCP1200D60)
MainBoard: BN41-02241A BN94-07772L
IC MainBoard: SPI Flash: 25Q40CL, EEPROM: ATMLH 416 2EC, SOUND: TAS5747PHPR
Tuner: BN41-02241A BN94-07772A
Control: IR: BN96-33542A BN41-01840C, WIFI: WIDT30Q BN59-01174A
Technical Specifications UE32H5303
SAMSUNG UE32H5303AK
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32H5303AK 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.
With such manifestations, a malfunction is most likely to be detected in the BN44-00768A power supply module. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches and rectifier diodes of the converters for the probability of a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the 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 S3310 (NCP1200D60), in the absence of visible damage or obvious 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.
In some of these cases, a malfunction is caused by a lack of display backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN junction indirectly indicates a LED-a
- The TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-02241A motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update or replace the software (software). Board repair and chip replacement SPI Flash: 25Q40CL, EEPROM: ATMLH 416 2EC, SOUND: TAS5747PHPR are made with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If you suspect a malfunction of the tuner BN41-02241A BN94-07772A, first of all, you need to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
We recommend the owners of the UE32H5303AK TV for repair only to qualified specialists with the necessary work experience! Attempts to repair it yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!


The appearance of the MainBoard BN41-02241A is shown in the figure below:
BN41-02241A
BN41-02241A can be used in TVs:
SAMSUNG UE40H5303 UE40H5303AK (Panel CY-DF400BGLV1V), SAMSUNG UE40H6203 UE40H6203AK (Panel CY-DF400CSLV3V), SAMSUNG UE46H6233 UE46H6233AK (Panel CY-DF460CSLV1V), SAMSUNG UE46H5303AK (Panel CY-DF460BGLV1V), SAMSUNG UE55H6203AK UE55H6203 (Panel CY-DF550CSLV1V), SAMSUNG UE32H5303AK UE32H5303 (Panel CY-DF320BGLV1V LSF320HN02-A01), SAMSUNG UE46H6203AK UE46H6203 (Panel CY-DF460CSLV1V).
The appearance of the power supply
Main features of the SAMSUNG UE32H5303AK device:
Installed matrix (LED panel) CY-DF320BGLV1V LSF320HN02-A01.
The matrix control uses the Timing Controller (T-CON) BN41-01938B.
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 UE32H5303AK TV are generated by the BN44-00768A power module, or its analogs using S3310 microcircuits (NCP1200D60).
MainBoard - the main board (motherboard) is a BN41-02241A module using SPI Flash chips: 25Q40CL, EEPROM: ATMLH 416 2EC, SOUND: TAS5747PHPR and others.
The tuner BN41-02241A BN94-07772A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:24
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