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, 2 March 2020

REPAIR / SERVICING TV LG 47LK530

Technical description and composition of the LG 47LK530 TV, panel type and applicable modules. The composition of the modules.
LG
Model: 47LK530 ZC
Chassis / Version: LD01U
Panel: LC470WUF (SC) (A2)
Lamp backlight: 20 Lamp EEFL
T-CON: 6870C-0312B
Inverter (backlight): integrated into PSU
PWM Inverter: BD9270F
MOSFET Inverter: 2SK3868
Trans Inverter: LIF47-100L NYB-003
Power Supply (PSU): EAX61289601 / 13 LGP47-10LF
PWM Power: STR-W6053N, R2A20112 (PFC 16pin)
MOSFET Power: 13NM60N
MainBoard: EAX64290501 (0)
IC MainBoard: CPU: LGE107DC-RP, DDR: H5TQ1G63DFR-PBC, Nand: K9F1G08U0D, FLASH 25Q80, EEPROM 24C16
Tuner: TDTJ-S001D EBL60721201
Specifications 47LK530
LG 47LK530
General recommendations for repairing TV LCD
Possible malfunctions
- The LG 47LK530 TV does not turn on and does not show any signs of being turned on, does not respond to the control buttons or to the remote control.
With such manifestations, in some cases, the EAX61289601 power module is faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches (13NM60N) 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 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 microcircuits (PWM) STR-W6053N, R2A20112 (PFC 16pin) are usually checked by replacing with new ones, or obviously working.
- 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.
These manifestations can be triggered by a power module, or by defects in the inverter, as well as a distortion of the currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, it is necessary to ring in its converter the power switches for breakdown and the secondary windings of the transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuit should be restored immediately after the repair is completed.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the EAX64290501 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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: LGE107DC-RP, DDR: H5TQ1G63DFR-PBC, Nand: K9F1G08U0D, FLASH 25Q80, EEPROM 24C16 requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
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.
Owners and users of the LG 47LK530 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!

Service manual and schematic diagram --------------------------->  LG 47LK530 Chassis LD11U



 The appearance of the MainBoard EAX64290501 is shown in the figure below:
EAX64290501
EAX64290501 can be used in TVs:
LG 32LV2500-ZA (Panel T315XW06 V.3), LG 37LV3500-ZA (Panel T370HW05 V.1), LG 42LV3400-ZA (Panel T420HW08 V.1), LG 32LK530 (Panel LC320WUD (SC)(A3)), LG 37LK430 (Panel LC370WUE), LG 32LK451 ZA (Panel T315HW04 V.9), LG 42LV3551 (Panel LC420EUN (SD) (V3)), LG 47LW4500 (Panel LC470EUF (SD)(F2)), LG 32LK551 ZB (Panel LC320WUD (SC)(A2)), LG 42LV3500 (Panel LC420EUN (SD)(V3)), LG 42LK551 ZB (Panel V420H2-LH5), LG 42LK451 42LK451-ZG.BRUYLJU (Panel T420HW09 V0), LG 42LK530 (Panel LC420WUF (SC)(A2)), LG 47LK950 ZA (Panel LC470WUF (SD)(P1)), LG 32LW4500 ZB (Panel LC320EUD (SD)(P1)), LG 42LW4500 ZB (Panel LC420EUF (SD)(PX)), LG 42LV4500 DA (Panel LC420EUF (SD)(A1)), LG 32LV4500 (Panel LC320EUD (SD)(A4)), LG 42LV369C (Panel T420HW08 V.9).
The appearance of the power supply
Main features of the device LG 47LK530:
Installed matrix (LCD panel) LC470WUF (SC) (A2).
The matrix control uses the Timing Controller (T-CON) 6870C-0312B.
To power the backlight, a converter is used, combined with a power supply, controlled by a BD9270F PWM controller. The transformer LIF47-100L NYB-003 is installed in the inverter converter. As power elements of the inverter, keys of the 2SK3868 type are used.
The necessary supply voltages for all nodes of the LG 47LK530 TV are generated by the EAX61289601 power module or its analogs using STR-W6053N, R2A20112 (PFC 16pin) microcircuits and 13NM60N type power switches.
MainBoard - the main board (motherboard) is an EAX64290501 module, using CPU chips: LGE107DC-RP, DDR: H5TQ1G63DFR-PBC, Nand: K9F1G08U0D, FLASH 25Q80, EEPROM 24C16 and others.
The TDTJ-S001D EBL60721201 tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC470WUF-SCA2
Type: a-Si TFT-LCD, Panel
Diagonal size: 47 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 1039.68x584.82 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1450: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + FRC), CIE1931 72%
Response Time: 8/10 (Tr / Td)
Frequency: 120Hz
Lamp Type: 20 pcs EEFL Without Driver
Signal Interface: LVDS (4 ch, 8/10-bit), 92 pins
Voltage: 12.0V
Posted By: FRANK at 06:47
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