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, 18 January 2020

REPAIR / SERVICING TV SAMSUNG UE46F6330AK

Technical description and composition of the SAMSUNG UE46F6330AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE46F6330AK UE46F6330
Panel: CY-HF460CSLV2V
LED backlight: BN41-01971A (A25337A), LUMENS D2GE-460SCA-R3 (13,01,14), LUMENS D2GE-460SCB-R3 (13,01,14)
T-CON: BN41-02069A
LED driver (backlight): integrated into PSU
PWM LED driver: SLC2013M
MOSFET LED driver: KF9N25D
Power Supply (PSU): BN44-00623B L46X1Q-DHS
PWM Power: D2011K (Standby), SPC7011 (PFC), FSFR1800HSL (PWM)
MOSFET Power: STF13NM60 (PFC)
MainBoard: BN41-01958B BN94-07095H
IC MainBoard: K4B2G1646E, KLM4G1FE3B, 25Q40, 25Q40, WT61P807, TAS5745
Tuner: BN40-00262B
Control: IR: BN96-26401F, BN59-01161A, Wi-Fi: BN96-25376A
Technical Specifications UE46F6330
SAMSUNG UE46F6330AK
General repair guidelines for TV LCD LED
If the power supply module BN44-00623B L46X1Q-DHS malfunctions, the external manifestations may be different, for example, SAMSUNG UE46F6330AK does not turn on at all and there is no indication of the indicator lights on the front panel. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
Power switches in pulsed power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the PWM controller chip D2011K (Standby), SPC7011 (PFC), FSFR1800HSL (PWM), which can only be checked by replacing with a new or obviously working one.
If the image appears and immediately disappears when the TV is turned on, or it is initially absent when it is turned on, but the sound has other functions, there is a greater likelihood of a malfunction of the display backlight LEDs or the LED driver (power converter of the CY-HF460CSLV2V panel backlight assembly).
In case of breaks in the LED circuit, a complete disassembly of the panel is required, the LEDs are checked for an open circuit, as well as the reliability of the connections in the connectors and rations of the terminals.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Usually, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
Repair of the motherboard BN41-01958B BN94-07095H 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 or EEPROM.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements K4B2G1646E, KLM4G1FE3B, 25Q40, 25Q40, WT61P807, TAS5745. BGA chip malfunctions are usually easy to detect by warming up.
If the TV works normally from external devices, but does not tune into television channels, the tuner BN40-00262B may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. 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.
We recommend the owners of the UE46F6330AK TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!



The appearance of the MainBoard BN41-01958B is shown in the figure below:
BN41-01958B
BN41-01958B can be used in TVs:
SAMSUNG UE39F5500 UE39F5500AK (Panel HF390BGM-C1), SAMSUNG UE32F5300AK (Panel HF320BGA-B1), SAMSUNG UE40F6200AK (Panel CY-HF400BGLV2V), SAMSUNG UE32F4500AK (Panel HF32AGH-R1), SAMSUNG UE42F5300AK (Panel CY-HF420BGAV1V), SAMSUNG UE46F6500 AK (Panel CY-HF400CSLV1V), SAMSUNG UE46F6330AK UE46F6330 (Panel CY-HF460CSLV2V), SAMSUNG UE32F6330 AK (Panel CY-HF320CSLV1V), SAMSUNG UE40F6330AK UE40F6330 (Panel CY-HF400CSLV5V), SAMSUNG UE40F6510AB UE40F6510 (Panel CY-GF400CSLV2V), SAMSUNG UE55F6400AK UE55F6400 (Panel CY-HF550CSLV1V), SAMSUNG UE40F6540AB (Panel CY-GF400CSLV3V), SAMSUNG UE40F6500 UE40F6500SS (Panel CY-GF400CSLV1H), SAMSUNG UE46F6650 UE46F6650AB (Panel CY-GF460CSLV1V), SAMSUNG UE46F6510 UE46F6510AB (Panel CY-GF460CSLV2V), SAMSUNG UE50F6330 UE50F6330AK (Panel HF500CSA-B1).
PSU Advanced
The UE46F6330AK model uses the BN44-00623B power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, this is a boost converter based on the SPC7011 PWM controller, which eliminates the charge current of the electrolytic capacitor of the filter of the mains rectifier directly from the network through open diodes, when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the SAMSUNG UE46F6330AK device:
Installed matrix (LED panel) CY-HF460CSLV2V.
The matrix control uses the Timing Controller (T-CON) BN41-02069A.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the SLC2013M PWM controller. As the power elements of the LED driver, keys of the KF9N25D type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE46F6330AK TV are generated by the BN44-00623B power module or its analogs using D2011K (Standby), SPC7011 (PFC), FSFR1800HSL (PWM) microchips and power switches of the STF13NM60 (PFC) type.
MainBoard - the main board (motherboard) is a BN41-01958B module, using the K4B2G1646E, KLM4G1FE3B, 25Q40, 25Q40, WT61P807, TAS5745 and other chips.
The tuner BN40-00262B provides the reception of television programs and tuning to channels.
Posted By: FRANK at 06:18
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