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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Thursday, 13 February 2020

REPAIR / SERVICING TV LG 26LD335

Technical description and composition of the LG 26LD335 TV, panel type and applicable modules. The composition of the modules.
LG LED
Model: 26LD335 26LD335-ZA.BRUDLJU
Chassis / Version: LD01B
Panel: T260XW04 V.3
T-CON: 26T05-C00 T260XW04 V3
LED driver (backlight): VIT71886.00
PWM LED driver: OZ964SN
MOSFET LED driver: P2904BD, P4004ED
Power Supply (PSU): LGP26-10P K EAX62106803 / 1
PWM Power: ICE3B0365J (Standby), L6599D, L6562A (PFC)
MainBoard: EAX63329201 (3) EBR72642747
IC MainBoard: CPU: LGE107DC-RP, DDR: H5TQ1G63BFR-H9C, Nand: HY27UF082G2B, SPI FLASH MX25L8005M2I
Tuner: TDTJ-S001D EBL60721201
Control: Remote: AKB72915207
Specifications 26LD335
LG 26LD335
General repair guidelines for TV LCD LED
Possible malfunctions
- The LG 26LD335 TV does not turn on, does not respond to the remote control and the control panel buttons, does not light up or blink indicators.
With similar manifestations, in some cases, the LGP26-10P power module is faulty. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches and rectifier diodes of the converters for the probability of 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, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM ICE3B0365J (Standby), L6599D, L6562A (PFC) microcircuits 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 it on and immediately disappears
The most likely in these cases is a malfunction of the LED backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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 constantly or blinks.
Repair or diagnostics of the EAX63329201 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - CPU: LGE107DC-RP, DDR: H5TQ1G63BFR-H9C, Nand: HY27UF082G2B, SPI FLASH MX25L8005M2I. Defective components should be replaced.
If the TV works normally from external devices, but does not tune into television channels, the TDTJ-S001D EBL60721201 tuner 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.
Attention TV owners! Self-repair attempts by LG 26LD335 are not recommended by the manufacturer and can lead to serious negative consequences!

Service manual and schematic diagram ------------------------>  LG 26LD335 Chassis LD91A.


MODELS: 26LD320, 26LD320C, 26LD320N, 26LD335, 26LD320-ZA, 26LD320C-ZA, 26LD320N-ZA, 26LD335-ZA


 The appearance of the MainBoard EAX63329201 is shown in the figure below:
EAX63329201
EAX63329201 can be used in TVs:
LG 42LD555-ZC (Panel LC420WUG (SC)(A1)), LG 32LD335 ZA (Panel T315XW03 V.1), LG 37LD425 ZA (Panel T370HW03 V.B), LG 42LD425 (Panel LC420WUG (SC)(A1)), LG 26LD335 26LD335-ZA.BRUDLJU (Panel T260XW04 V.3).
The appearance of the power supply
Main features of the device LG 26LD335:
Installed matrix (LED-panel) T260XW04 V.3.
The matrix control uses the Timing Controller (T-CON) 26T05-C00.
The LED driver VIT71886.00 is used to power the backlight LEDs, it is controlled by the OZ964SN PWM controller. As power elements of the LED driver, keys of the type P2904BD, P4004ED are used.
The necessary power voltages for all nodes of the LG 26LD335 TV are generated by the LGP26-10P power module, or its analogs using ICE3B0365J (Standby), L6599D, L6562A (PFC) microcircuits.
MainBoard - the main board (motherboard) is an EAX63329201 module using CPU chips: LGE107DC-RP, DDR: H5TQ1G63BFR-H9C, Nand: HY27UF082G2B, SPI FLASH MX25L8005M2I and others.
The TDTJ-S001D EBL60721201 tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T260XW04 V3
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V

Posted By: FRANK at 02:14
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