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 UE32ES5550

Technical description and composition of the SAMSUNG UE32ES5550 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32ES5550 UE32ES5550W
Chassis / Version: AS02
Panel: LE320BGM-C1
LED backlight: SLED 2012SVS32 7032NNB 44 2D REV1.0
T-CON: V320HJ2-CPE2 + V320HK2-XLPE1 V320HK2-XRPE1
LED driver (backlight): integrated into PSU; 135V, 240mA
PWM LED driver: SLC2012M
MOSFET LED driver: MDD5N40
Power Supply (PSU): BN44-00501A PSLF790B04B PD32A1_CSM
PWM Power: SSC2S110
MOSFET Power: 13NM60N
MainBoard: BN41-01812A BN94-05562A
IC MainBoard: CPU: SEMS27; NAND FLASH KLM2G1HE3F-B001; EEPROM: 24C256
Tuner: BN40-00239B
Technical Specifications UE32ES5550
SAMSUNG UE32ES5550
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32ES5550 TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
Usually with such manifestations, the defect is caused by faulty elements in the main power module BN44-00501A. It is necessary to measure its output supply voltage, and in case of their absence, check the serviceability of the power switches (13NM60N) of the converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) SSC2S110, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, there is a reaction to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. 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.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source. By opening the panel, each LED can be checked separately. Usually, Chinese multimeters light up a single 3-volt LED, if you connect probes in the forward direction to it. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as a health indicator. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-01812A 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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: SEMS27; NAND FLASH KLM2G1HE3F-B001; EEPROM: 24C256 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.
If the TV works normally from external devices, but does not tune into television channels, the tuner BN40-00239B may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Owners and users of the SAMSUNG UE32ES5550 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 --------------->  SAMSUNG UE32ES5550 Chassis AS02 

FOR MODELS  UE26EH4500, UE26EH4510, UE32EH5300, UE32EH5307, UE40EH5300, UE40EH5307, UE46EH5300, UE46EH5307, UE50EH5300, UE32ES5500, UE32ES5507, UE32ES5530, UE32ES5537, UE32ES5550, UE32ES5557, UE37ES5500, UE40ES5500, UE40ES5507, UE40ES5530, UE40ES5537, UE40ES5550, UE40ES5557, UE46ES5500, UE46ES5507, UE46ES5530, UE46ES5537, UE46ES5550, UE46ES5557, UE50ES5500, UE50ES5507, UE50ES5530, UE50ES5537, UE50ES5557, UE32ES5700, UE37ES5700, UE40ES5700, UE46ES5700, UE50ES5700, UE32ES5800, UE40ES5800, UE46ES5800, UE32EH5450W, UE40EH5450W, UE46EH5450W, UE22ES5400W, UE22ES5410W.

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

 The appearance of the MainBoard BN41-01812A is shown in the figure below:
BN41-01812A
BN41-01812A can be used in TVs:

The appearance of the power supplySAMSUNG 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).
Main features of the SAMSUNG UE32ES5550 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 UE32ES5550 television are generated by the BN44-00501A power module or its analogs using SSC2S110 microcircuits and 13NM60N power switches.
MainBoard - the main board (motherboard) is a BN41-01812A module, using CPU chips: SEMS27; NAND FLASH KLM2G1HE3F-B001; EEPROM: 24C256 and others.
The tuner BN40-00239B provides the reception of television programs and tuning to channels.
Posted By: FRANK at 05:16
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