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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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday, 8 January 2020

REPAIR / SERVICING TV SAMSUNG UE40D6530

Technical description and composition of the SAMSUNG UE40D6530 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40D6530 UE40D6530WS
Chassis / Version: U69A / Ver: HQ02
Panel: LTJ400HV01-V
LED backlight: BN64-01640A 40-L-R = 2011SVS40_6.5K_V2_4CH_PV RIGHT72 / LEFT72
T-CON: SH120PMB4SV0.3 LSJ460HW01-S
LED driver (backlight): integrated into PSU
PWM LED driver: SEM5025
MOSFET LED driver: STU432S
Power Supply (PSU): BN44-00427A PD46B2-BSM
PWM Power: SQD3011K, UCC25600, ICE2PCS06 (PFC)
MOSFET Power: 10NM60N, MDF9N50
MainBoard: BN41-01587E BN94-05105T
IC MainBoard: SDP1001, SDP1005, SDP94, SIL9489ACTU, K4B2G1646C-HCH9, EPM240T100C4N
Tuner: BN40-00217A DNSS243VH142A
Control: IR: BN96-18099G BN41-01638B; WiFi: WIDT10B BN59-01130A 649E-WIDT10B
Technical Specifications UE40D6530
SAMSUNG UE40D6530
General repair guidelines for TV LCD LED
Possible malfunctions
- The SAMSUNG UE40D6530 TV does not turn on, does not respond to the remote control and the control panel buttons, does not light up or blink indicators.
Most likely in this case, the main switching power supply (IIP) is faulty - the BN44-00427A module. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is first necessary to check the power switches (10NM60N, MDF9N50) and rectifier diodes for a possible partial or complete breakdown.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, elements supplying a PWM controller, frequency-setting, damper, and also elements of the Negative Stabilization Feedback. PWM circuits (PWM) SQD3011K, UCC25600, ICE2PCS06 (PFC) are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn on and immediately disappears
The most likely in these cases is a malfunction of the LED backlight. 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.
It is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V for them. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED if you connect the probes in the forward direction, the red probe to the anode, and the black to the cathode. 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 BN41-01587E 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). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements SDP1001, SDP1005, SDP94, SIL9489ACTU, K4B2G1646C-HCH9, EPM240T100C4N. BGA chip malfunctions are usually easy to detect by warming up.
Malfunction of the tuner BN40-00217A DNSS243VH142A 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.
It should be remembered! Attempts to self-repair a SAMSUNG UE40D6530 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device.



The appearance of the MainBoard BN41-01587E is shown in the figure below:
BN41-01587E
BN41-01587E can be used in TVs:
SAMSUNG UE40D6510 UE40D6510WS (Panel LD400CSC-C2), SAMSUNG UE55D6100SW (Panel LTJ550HW04-L), SAMSUNG UE46D6530WS UE46D6530 (Panel LTJ460HW01-V), SAMSUNG 32D6510 32D6510WS (Panel LD320CSC-C2), SAMSUNG UE40D6530 UE40D6530WS (Panel LTJ400HV01-V), SAMSUNG UE46D6510WS UE46D6510 (Panel LTJ460HW02-L), SAMSUNG UE32D6510WS UE32D6510 (Panel LD320CSC-C2), SAMSUNG UE40D6500 UE40D6500VS (Panel LTJ400HV01-J).
The appearance of the power supply
Main features of the SAMSUNG UE40D6530 device:
Installed matrix (LED-panel) LTJ400HV01-V.
The matrix control uses the Timing Controller (T-CON) SH120PMB4SV0.3.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the SEM5025 PWM controller. As power elements of the LED driver, keys of the STU432S type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40D6530 TV are generated by the BN44-00427A power module or its analogs using SQD3011K, UCC25600, ICE2PCS06 (PFC) microcircuits and power switches of the type 10NM60N, MDF9N50.
MainBoard - the main board (motherboard) is a module BN41-01587E, using microchips SDP1001, SDP1005, SDP94, SIL9489ACTU, K4B2G1646C-HCH9, EPM240T100C4N and others.
The tuner BN40-00217A DNSS243VH142A provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:51
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