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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Saturday, 11 January 2020

REPAIR / SERVICING TV SAMSUNG UE40H6203

Technical description and composition of the SAMSUNG UE40H6203 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40H6203 UE40H6203AK
Chassis / Version: US02
Panel: CY-DF400CSLV3V // CY-DF400CSLV1V
LED backlight: LUMENS D3GE-400SMB-R3, LUMENS D3GE-400SMA-R2
T-CON: BN97-07973C BN41-02110A
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00765A L40HV1_ESM
MainBoard: BN41-02241A BN94-08169C
IC MainBoard: SPI Flash: 25Q40CL; EEPROM: ATMLH 416 2EC; SOUND: TAS5747PHPR
Tuner: BN40-00287A
Control: Remote: BN59-01178B, WiFi: WIDT30Q BN59-01174A
Technical Specifications UE40H6203
SAMSUNG UE40H6203
General repair guidelines for TV LCD LED
If the SAMSUNG UE40H6203 does not turn on, no control lights on the front panel are on or blinking, therefore, there is a very high probability of a fault in the BN44-00765A power module. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is checked by replacing it with a known good one.
Sometimes the SAMSUNG UE40H6203 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a certain probability of a malfunction of the LED driver - the CY-DF400CSLV1V panel LED backlight converter, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the operability of the electrolytic capacitors of the filter by supplying the LED driver.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
To check the LEDs for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN-junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
On the BN41-02241A motherboard, in case of a malfunction, you should first check the operation of all the stabilizers and power converters of the microcircuits, and also, if necessary, update the software (software).
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.
If you suspect a malfunction of the tuner BN40-00287A, first of all, you need to verify the correctness of the software, as well as the presence of the necessary voltage levels at the corresponding terminals of the tuner. Communication with the processor via the I2C bus must be checked with an oscilloscope.
We recommend the owners of the UE40H6203 TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!


FIRMWARE  SPI FLASH ---------------> SAMSUNG UE40H6203 UE40H6203AK , Main: BN41-02241A, Panel: CY-DF400CSLV1V


 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 UE40H6203 device:
Installed matrix (LED panel) CY-DF400CSLV3V or CY-DF400CSLV1V.
The matrix control uses the Timing Controller (T-CON) BN97-07973C.
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 UE40H6203 TV is carried out by the BN44-00765A power module, 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 BN40-00287A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:43
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