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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Friday 10 January 2020

REPAIR / SERVICING TV SAMSUNG UE40F6510AB

Technical description and composition of the SAMSUNG UE40F6510AB TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40F6510AB UE40F6510
Chassis / Version: TH01
Panel: CY-GF400CSLV2V
LED driver (backlight): integrated into PSU
PWM LED driver: SLC2013M
Power Supply (PSU): BN44-00622B L42X10_DHS
PWM Power: FSFR1800HS, SPC7011F (PFC), SQD3011K (STR3A161HD)
MOSFET Power: STF13NM60 (PFC)
MainBoard: BN41-01958B BN94-06736F
IC MainBoard: SEMS30, WT61P807, K4B2G1646E, KLM4G1FE3B, 25Q40, 25Q40, WT61P807, TAS5745
Tuner: BN40-00258A DNTS243EH105A
Technical Specifications UE40F6510
SAMSUNG UE40F6510AB
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE40F6510AB TV does not turn on at all. The control lights do not light or flash. On the remote control and the buttons on the control panel does not respond.
With such manifestations, a malfunction is most likely to be detected in the BN44-00622B power module. It is necessary to measure its secondary output voltages, and if they are absent, check the health of the power switches (STF13NM60 (PFC)) of the converters and rectifier diodes for a possible short circuit.
In case of breakdowns in the secondary circuits, the converter can emergencyly operate in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually 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. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power key can be PWM (PWM) FSFR1800HS, SPC7011F (PFC), SQD3011K (STR3A161HD). It is checked only by replacement with a known good one.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
Failure in most such cases is detected in the nodes and backlight elements 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.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-01958B 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). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - SEMS30, WT61P807, K4B2G1646E, KLM4G1FE3B, 25Q40, 25Q40, WT61P807, TAS5745 which may require replacement with new ones. If the BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Malfunction of the tuner BN40-00258A DNTS243EH105A is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Attention TV owners! Attempts at self-repair of SAMSUNG UE40F6510AB are not recommended by the manufacturer and 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).
The appearance of the power supply
Main features of the SAMSUNG UE40F6510AB device:
Installed matrix (LED-panel) CY-GF400CSLV2V.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the SLC2013M PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE40F6510AB TV are generated by the BN44-00622B power supply module or its analogs using the FSFR1800HS, SPC7011F (PFC), SQD3011K (STR3A161HD) microcircuits and the STF13NM60 (PFC) type power switches.
MainBoard - the main board (motherboard) is a BN41-01958B module, using chips SEMS30, WT61P807, K4B2G1646E, KLM4G1FE3B, 25Q40, 25Q40, WT61P807, TAS5745 and others.
Tuner BN40-00258A DNTS243EH105A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:23
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