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 UE40J5100AU

Technical description and composition of the SAMSUNG UE40J5100AU TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40J5100AU
Chassis / Version: Ver: LS04
Panel: CY-GH040BGSR1V
LED backlight: 2014SVS40 3228 R / L03 REV1.6 150401 LM41-00099H / K
T-CON: RUNTK5538TP; KL5T3067, MAX9684A, ICL9860, Q40A-104G
LED driver (backlight): integrated into PSU; 195V, 450mA
PWM LED driver: 7014X
MOSFET LED driver: AOD5N40
Power Supply (PSU): BN44-00703A L48S1_ESM
PWM Power: SEM3051 (PFC), FA6A01N (PWM resonant)
MOSFET Power: 13N60M2 (PFC), 50R380P
MainBoard: BN41-02098B BN94-08117L
IC MainBoard: F59L1G81A, 25Q40CLSIP, S24C256, K4B2G1646Q-BCKO, NTP7414
Tuner: BN40-00294A
Control: IR: BN41-02150A
Technical Specifications UE40J5100AU
SAMSUNG UE40J5100AU
General repair guidelines for TV LCD LED
If the UE40J5100AU TV does not turn on, does not make any sounds when it is turned on, the power supply diagnostics should be started by checking the fuse and, if it breaks, you must first check all the power semiconductor elements of the primary circuit - diodes and transistors 13N60M2 (PFC), 50R380P for probability avalanche or thermal breakdown.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself for no reason that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controllers SEM3051 (PFC), FA6A20N (PWM resonant), which can only be checked by replacement, and it is also necessary to check other semiconductor elements (diodes, transistors, zener diodes).
The power module BN44-00703A uses a PFC (Power Factor Correction) node that acts as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the SEM3051 PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected to the network directly through open diodes when its reactance determines the charge current (about 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be about 390V, and in standby, about 300V.
The voltages at the test points are shown in the figure.

If the SAMSUNG UE40J5100AU does not have an image, but there is sound and the TV is controlled from the remote control, a malfunction in the backlight circuits of the CY-GH040BGSR1V panel is likely. LEDs or their power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the backlight unit.
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 or diagnostics of the BN41-02098B BN94-08117L motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update the software (software).
In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its chips F59L1G81A, 25Q40CLSIP, S24C256, K4B2G1646Q-BCKO, NTP7414 and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before changing the tuner BN40-00294A, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope

Attention! For users and owners of UE40J5100AU TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.

FIRMWARE  SPI FLASH, EEPROM ----------------> SAMSUNG UE40J6390 Ver: LS04, Main: BN94-08117L, Panel: CY-GH040BGSR1V. FOR Led = SAMSUNG_2014SVS40_3228_L06_REV1.6_150401_LM41-00099K.

VARIANT  SAMSUNG UE40J5100 Ver: MU02; Panel: CY-GH040BGSV1V, Main BN94-08117Q BN41-02098B,
T-CON: RUNTK 5538TP ZA 54C35, PSU: BN44-00703A L48S1_ESM,
Led Backlight: D4GE-400DCA-R2(14,03,17), D4GE-400DCB-R2(14,03,17) , BN41-02172A (A30417A).


 The appearance of the MainBoard BN41-02098B is shown in the figure below:
BN41-02098B
BN41-02098B can be used in TVs:
SAMSUNG UE32H4270AU UE32H4270 (Panel HH032AGH-R1), SAMSUNG LT24D310ES (Panel V236BJ1-LE2), SAMSUNG UE40H5000AK (Panel CY-GH040BGLV1V), SAMSUNG UE48H5270AU UE48H5270 (Panel CY-GH048BGLV1V), SAMSUNG UE32H4290AU UE32H4290 (Panel HH032AGH-R2), SAMSUNG UE40H5290AU UE40H5290 (Panel CY-GH040BGLV1V), SAMSUNG UE40J5000AU UE40J5000 (Panel CY-JJ040BGNV2V), SAMSUNG UE40H5020 UE40H5020AK (Panel CY-GH040BGSV1V), SAMSUNG UE40J5100AU (Panel CY-GH040BGSR1V), SAMSUNG T31D310EW (Panel CY-HH032AGSV1H), SAMSUNG UE48J5000AU (Panel CY-JJ048BGEV5V), SAMSUNG UE32H5020AK (Panel CY-GH032BGLV4V), SAMSUNG UE40J5120AU (Panel CY-GH040BGSV1V), SAMSUNG LT32E310EX T32E310EX (Panel CY-GJ032BGEV1V), SAMSUNG UE40H5270 UE40H5270AU (Panel CY-GH048BGLV1V), SAMSUNG UE32J5100AK UE32J5100 (Panel CY-GH032BGSV1V), SAMSUNG UE32H5000AK UE32H5000 (Panel CY-GH032BGLV1V), SAMSUNG UE48H5000 UE48H5000AK (Panel CY-GH048CSLV1V), SAMSUNG UE32J5120AK UE32J5120 (Panel CY-GH032BGSV1V).
The appearance of the power supply
Main features of the SAMSUNG UE40J5100AU device:
Installed matrix (LED panel) CY-GH040BGSR1V.
The matrix control uses the Timing Controller (T-CON) RUNTK5538TP ;.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a 7014X PWM controller. As power elements of the LED driver, keys of the AOD5N40 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40J5100AU TV are generated by the BN44-00703A power module or its analogs using SEM3051 (PFC), FA6A01N (PWM resonant) microcircuits and 13N60M2 (PFC), 50R380P type power switches.
MainBoard - the main board (motherboard) is a BN41-02098B module, using chips F59L1G81A, 25Q40CLSIP, S24C256, K4B2G1646Q-BCKO, NTP7414 and others.
The tuner BN40-00294A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 08:14
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