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 28 December 2019

REPAIRING / SERVICING TV SAMSUNG LT24D310ES

Technical description and composition of the SAMSUNG LT24D310ES TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: LT24D310ES
Panel: V236BJ1-LE2
T-CON: V236BJ1-XCE2; CM1801B, CM501, CM601
LED driver (backlight): integrated into PSU; 35.5V 200mA
PWM LED driver: BD93941FP
MOSFET LED driver: 9997GH
Power Supply (PSU): BN44-00746A (B) L23S0
PWM Power: 3S111
MOSFET Power: KP8N60
MainBoard: BN41-02098B BN94-07809F
IC MainBoard: 25Q80
Tuner: BN40-00292B GTCS2X-33S / K3-FWS
Control: AA59-00741A
Appearance
SAMSUNG LT24D310ES
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG LT24D310ES TV does not turn on at all. There is no reaction to the remote control and to the control buttons from the front panel. Indicator lights do not light or flash.
Usually with such manifestations, the defect is caused by faulty elements in the main power module BN44-00746A. It is necessary to measure its output voltages in the secondary circuits, and if they are absent, check the operability of the power switch KP8N60 of the converter and rectifier diodes for possible breakdown (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.
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 switch may be PWM 3S111. It is checked by replacing with a known good one.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
In such cases, the most likely malfunction of the LED backlight elements. 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 lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN-junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights up constantly or blinks.
Repair or diagnostics of the BN41-02098B 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). Board repair and replacement of 25Q80 microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the tuner BN40-00292B GTCS2X-33S / K3-FWS. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Owners and users of the SAMSUNG LT24D310ES 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!
SAMSUNG LT24D310EX Panel Option: V236BJ1-LE2,
Main BN94-07742A (BN41-02105A), T-Con: V236BJ1-XCE2,
Led Backlight: 6202B0005S000 V236B1-LE2-TREM11 length 30.8, width 4, diodes 18 pcs.
IR: BN41-01976B.


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 UE32JSV1B (CY.
The appearance of the power supply
Main features of the SAMSUNG LT24D310ES device:
Installed matrix (LED-panel) V236BJ1-LE2.
The matrix control uses the Timing Controller (T-CON) V236BJ1-XCE2 ;.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the BD93941FP PWM controller. As power elements of the LED driver, keys of the type 9997GH are used.
The necessary supply voltages for all nodes of the SAMSUNG LT24D310ES TV are generated by the BN44-00746A power module or its analogs using 3S111 microcircuits and KP8N60 type power switches.
MainBoard - the main board (motherboard) is a BN41-02098B module, using 25Q80 chips and others.
The tuner BN40-00292B GTCS2X-33S / K3-FWS provides the reception of television programs and tuning to channels.
Information from an alternative source:
SAMSUNG LT24D310ES
Panel Type (Matrix): V236BJ1-LE2
Motherboard: BN94-07809F BN41-02098B, FLASH (IC805) - 25Q80, Tuner: GTCS2X-33S / K3-FWS BN40-00292B
PSU: L23S0 BN44-00746A (B)
Remote control: AA59-00741A
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V236BJ1-LE2
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.6 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 521.471x293.184 mm
Surface: Antiglare (Haze 1%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8.5 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V


Posted By: FRANK at 09:38
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