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 UE32ES5557K

Technical description and composition of the SAMSUNG UE32ES5557K TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32ES5557K
Chassis / Version: U78A
Panel: LE320BGM-C1
LED backlight: SLED 2012SVS32 7032NNB 44 2D REV1.0
T-CON: V320HJ2-CPE2; CM2801B, CM501, CM601
LED driver (backlight): integrated into PSU; 135V, 240mA
PWM LED driver: SLC2012M
MOSFET LED driver: MDD5N40
Power Supply (PSU): BN44-00501A PD32A1_CSM
PWM Power: 2S110
MOSFET Power: 13NM60N
MainBoard: BN41-01812A
IC MainBoard: CPU: SEMS27; NAND FLASH KLM2G1HE3F-B001; EEPROM: 24C256; SDRAM K4B2G1646C-HCK0
Tuner: DNTS403EL144AA BN40-00239B
Control: Remote: AA59-00582A, IR: ES6500 BN41-01831A Rev: V2.5
Appearance
SAMSUNG UE32ES5557K
General repair guidelines for TV LCD LED
Any repair usually begins with an external inspection. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Useful tips can include swollen capacitors, ring cracks formed in the soldered terminals, a charred paint layer on the resistors, signs of overheating of the board, and many other external signs that are familiar to experienced repairmen.
If the UE32ES5557K TV does not turn on, does not make any sounds when it is turned on, and also no indicators light up or blink on the front panel, there is a high probability of a malfunction in the power supply module. In some cases, there may be a malfunction only in standby power. After checking the mains fuse and power elements of the primary power supply circuit, you should also check for the presence of a short circuit in the loads of the secondary rectifiers.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the 2S110 PWM controller microcircuit are subject to verification, which it is desirable to verify by replacement.
It happens that the SAMSUNG UE32ES5507K TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a possibility of a malfunction of the LED driver or the backlight LEDs of the LE320BGM-C1 panel. In this case, it becomes necessary to disassemble the panel and check the LEDs themselves, as well as the same contact connections in the connectors and rations of the terminals.
It should be remembered that it is impossible to determine the open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
The LE320BGM-C1 has four groups of 11 LEDs (6V 2W). Two series-connected pairs of two parallel groups.
If one LED breaks down, the load will increase for the whole group, which will subsequently lead to a breakdown of all LEDs in the group. This is a typical defect of this panel. Replacing 7032 LEDs, unlike the usual 3028, is quite complicated and requires certain skills from the master.
Repair or diagnostics of the BN41-01812 A motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update the software (software). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - CPU: SEMS27; NAND FLASH KLM2G1HE3F-B001; EEPROM: 24C256; SDRAM K4B2G1646C-HCK0. Defective components should be replaced.
The malfunction of the tuner DNTS403EL144AA BN40-00239B is established after checking the software and all supply voltages at its terminals.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of repair of electronic equipment.


SCHEMATIC ------------>  SAMSUNG Chassis U78A/U78B Model: UE26EH45***, UE22ES54***, UE**EH53***,UE**ES55***, UE**ES57***, UE**ES58***, UE**EH5450W.

PSU SCHEMATIC -------------->  Power supply BN44-00501A schematic diagram

The appearance of the MainBoard BN41-01812A is shown in the figure below:
BN41-01812A
BN41-01812A can be used in TVs:
SAMSUNG UE32EH5300P (Panel DE320BGM-C1 ), SAMSUNG UE40ES6307U (Panel LTJ400HV05-L), SAMSUNG UE40ES5537K (Panel CY-LE400BGSV1L), SAMSUNG UE32ES5557K (Panel LE320BGM-C1), SAMSUNG UE40EH5307K (Panel LTJ400HM08-L), SAMSUNG UE37ES6307U (Panel LE370CSA-C1), SAMSUNG UE32ES5500 UE32ES5500W (Panel LE320BGM-C1), SAMSUNG UE32ES5530W UE32ES5530 (Panel LE320BGM-C1), SAMSUNG UE32ES5507K UE32ES5507V (Panel LE320BGM-C1), SAMSUNG UE32ES5537K (Panel LE320BGM-C1), SAMSUNG UE40ES5530W UE40ES5530 (Panel CY-LE400BGSV1L), SAMSUNG UE40ES6100W (Panel LTJ400HV05-L), SAMSUNG UE32EH5300W UE32EH5300 (Panel DE320BGM-C1), SAMSUNG UE32EH5307K UE32EH5307 (Panel DE320BGM-C1), SAMSUNG UE55ES6100W (Panel LTJ550HW08-L), SAMSUNG UE46ES6307U (Panel LTJ460HW05-L), SAMSUNG UE40EH5300W (Panel LTJ-400HM08-L), SAMSUNG UE46ES6100W UE46ES6100 (Panel LTJ460HW05-L), SAMSUNG UE37ES6100W (Panel LE370CSA-C1), SAMSUNG UE50ES5700 UE50ES5700SXZG (Panel LE500BGA-B2), SAMSUNG UE40ES5507K UE40ES5507 (Panel LE400BGA-B1), SAMSUNG UE46EH5300 UE46EH5300W (Panel LTJ460HN05-L), SAMSUNG UE32ES6307 UE32ES6307U (Panel LE320CSM-C1), SAMSUNG UE50ES5507K UE50ES5507 (Panel LE500BGA-B2), SAMSUNG UE40ES5557K UE40ES5557 (Panel LE400BGA-B1), SAMSUNG UE46ES6200 (Panel LTJ460HW05-C), SAMSUNG UE32ES6100 UE32ES6100W (Panel LE320CSM-C1), SAMSUNG UE40ES5500 UE40ES5500W (Panel LTJ400HM09-L), SAMSUNG UE32ES5550 UE32ES5550W (Panel LE320BGM-C1).
The appearance of the power supply
Main features of the SAMSUNG UE32ES5557K device:
Installed matrix (LED panel) LE320BGM-C1.
The matrix control uses the Timing Controller (T-CON) V320HJ2-CPE2 ;.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the SLC2012M PWM controller. As power elements of the LED driver, keys of the MDD5N40 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32ES5557K TV are generated by the BN44-00501A power module or its analogs using 2S110 microcircuits and 13NM60N type power switches.
MainBoard - the main board (motherboard) is a BN41-01812A module, using CPU chips: SEMS27; NAND FLASH KLM2G1HE3F-B001; EEPROM: 24C256; SDRAM K4B2G1646C-HCK0 and others.
The tuner DNTS403EL144AA BN40-00239B provides the reception of television programs and tuning to channels.
Posted By: FRANK at 05:20
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