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 UE32ES6727U


Technical description and composition of the SAMSUNG UE32ES6727U TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32ES6727U UE32ES6727
Chassis / Version: VER: TT02
Panel: LTJ320HW06-L
T-CON: BN41-01789A 120_3D_TCON
LED driver (backlight): integrated into PSU 87.5V 470mA
PWM LED driver: SLC5012M
MOSFET LED driver: D5N40, D3N40
Power Supply (PSU): BN44-00517C PSLF790D04C PD32B1DE_CSM
PWM Power: SSC2S110 x2, A358F, (PWM SOT23-6 9012M D47DJ) x2
MOSFET Power: D4189, MDD1752
MainBoard: BN41-01807A BN94-05920U
IC MainBoard: WT61P805, KLM2G1HE3F, K4B2G1646C-HCK0, NTP7412S
Tuner: BN40-00238B DNTD243VH144AA
Control: IR: BN41-01831A (ES6500)
Appearance
SAMSUNG UE32ES6727U
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32ES6727U TV does not turn on. There are no signs of operability. The indicators on the front panel do not shine and do not blink, and the remote control and control buttons do not respond.
In most of these cases, the BN44-00517C power supply is defective. It is necessary to measure the secondary output voltage, and in case of their absence, check the serviceability of the power switches (D4189, MDD1752) of the converters and rectifier diodes for a short circuit.
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, power, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. PWM chip SSC2S110 x2, A358F, (PWM SOT23-6 9012M D47DJ) x2 can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, there is sound, it reacts to the remote control, channels are switched. In some cases, the image appears when you turn on and immediately disappears.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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 indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN44-01807A motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, you should update or replace the software (software). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - WT61P805, KLM2G1HE3F, K4B2G1646C-HCK0, NTP7412S. Defective components should be replaced.
Before replacing the tuner BN40-00238B DNTD243VH144AA, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Owners and users of the SAMSUNG UE32ES6727U 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!

The appearance of the MainBoard BN41-01807A is shown in the figure below:
BN41-01807A
BN41-01807A can be used in TVs:
SAMSUNG UE40ES6550S (Panel LTJ400HV05-V), SAMSUNG UE46ES6547U UE46ES6547 (Panel LTJ460HW06-L), SAMSUNG UE40ES7207U (Panel LTJ400HL10-L), SAMSUNG UE46ES6540 UE46ES6540U (Panel LTJ460HW06-L), SAMSUNG UE40ES6750 MXRU (Panel LTJ400HV08-L), SAMSUNG UE32ES6727U UE32ES6727 (Panel LTJ320HW06-L), SAMSUNG UE40ES6757 UE40ES6757M (Panel LTJ400HV08-L), SAMSUNG UE32ES6550 UE32ES6550S (Panel LE320CSM-C1), SAMSUNG UE40ES6540S (Panel LTJ400HV07-L), SAMSUNG UE55ES6760 UE55ES6760SXZG (Panel LTJ550HW10-B), SAMSUNG UE32ES6540 UE32ES6540S (Panel LE320CSM-C1), SAMSUNG UE40ES6727 UE40ES6727U (Panel LTJ400HV08-L), SAMSUNG UE32ES6757M (Panel LE320CSM-C2).
The appearance of the power supply
Main features of the SAMSUNG UE32ES6727U device:
Installed matrix (LED-panel) LTJ320HW06-L.
The matrix control uses the Timing Controller (T-CON) BN41-01789A.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the SLC5012M PWM controller. As power elements of the LED driver, keys of the type D5N40, D3N40 are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32ES6727U TV are generated by the BN44-00517C power supply module or its analogs using SSC2S110 x2, A358F, (PWM SOT23-6 9012M D47DJ) x2 microchips and power switches of the D4189, MDD1752 type.
MainBoard - the main board (motherboard) is a BN41-01807A module, using microchips WT61P805, KLM2G1HE3F, K4B2G1646C-HCK0, NTP7412S and others.
The tuner BN40-00238B DNTD243VH144AA provides the reception of television programs and tuning to channels.
Posted By: FRANK at 05:52
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