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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Friday 10 January 2020

REPAIR / SERVICING TV SAMSUNG UE40H5303

Technical description and composition of the SAMSUNG UE40H5303 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40H5303 UE40H5303AK
Panel: CY-DF400BGLV1V
LED backlight: D3GE-400SMA-R2 [13.07.10] D3GE-400SMB-R2 [13.07.10]
T-CON: 13Y FHD_60Hz_V02 BN41-01938B
LED driver (backlight): integrated into PSU; 152V 425mA
Power Supply (PSU): BN44-00770A L40HFP_ESM PSFL940H06A
MainBoard: BN41-02241A BN94-07772A
IC MainBoard: SPI Flash: 25Q40CL; EEPROM: ATMLH 416 2EC; SOUND: TAS5747PHPR
Tuner: DNTQ403IL286A BN40-00287A
Control: BN59-01178B, WIFI: WIDT30Q BN59-01174A
Technical Specifications UE40H5303
SAMSUNG UE40H5303
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 and there is not the slightest sign of operability - the most likely malfunction is in the power module. When repairing the power supply, it is advisable to start the diagnosis by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power key (s) of the converter. The complete inoperability of the power supply unit can be caused by a short circuit in the power elements in the primary circuit, followed by an open fuse, or a short circuit in the loads.
The LED driver for the display backlight is made according to the boost converter circuit on the common board of the power module BN44-00770A.
If there is no image when you turn on the SAMSUNG UE40H5303, or it appears and immediately disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the CY-DF400BGLV1V panel, or in the node of the LED driver.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
Repair of the motherboard BN41-02241A BN94-07772A must begin with the diagnosis and verification of all linear stabilizers and power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH, EEPROM, NAND.
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - SPI Flash: 25Q40CL; EEPROM: ATMLH 416 2EC; SOUND: TAS5747PHPR and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
In the absence of tuning to local television channels, you should make sure that the software is correct, as well as the presence of supply voltages at the terminals of the tuner DNTQ403IL286A. The data exchange of the tuner with the processor can be controlled using an oscilloscope.
Attention to the owners! Attempts to repair the TV SAMSUNG UE40H5303 on its own are not recommended by the manufacturer and can lead to serious 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 UE40H5303 device:
Installed matrix (LED-panel) CY-DF400BGLV1V.
The matrix control uses the Timing Controller (T-CON) 13Y.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE40H5303 TV is carried out by the power module BN44-00770A, or its analogues.
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 DNTQ403IL286A BN40-00287A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 08:17
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