Technical description and composition of the LG 47LE5300 TV, panel type and applicable modules. The composition of the modules.LG
Model: 47LE5300
Chassis / Version: LD01D
Panel: LC470EUH (SC) (A1)
Lamp backlight: 3660L-0348A, 3660L-0349A
Inverter (backlight): integrated into PSU
PWM Inverter: YP4247LPB
Power Supply (PSU): EAY60803401 YP47LPBL
PWM Power: PFC, PWM
MOSFET Power: N-FET TO-220F
MainBoard: EAX61766102 (0) EBT60927321
IC MainBoard: CPU: LGE101DB-LF-T8, SDRAM: K4B1G1646E-HCH9, Flash: W25Q80, EEPROM: 24C1024
Tuner: TDTJ-S001D
Specifications 47LE5300
LG 47LE5300
General recommendations for repairing TV LCD
Possible malfunctions
- The LG 47LE5300 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.
Usually with such manifestations, the defect is caused by faulty elements in the main power supply module EAY60803401. It is necessary to measure its output voltages and, if they are absent, to check for short-circuit probabilities in the converters, power switches and rectifier diodes.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key 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 are usually checked by replacement with new ones, or obviously working.
- There is no image, there is sound, all other functions of the TV work. When turned on, the image may sometimes appear for a second.
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. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the EAX61766102 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). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its CPU chips: LGE101DB-LF-T8, SDRAM: K4B1G1646E-HCH9, Flash: W25Q80, EEPROM: 24C1024 and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
The TDTJ-S001D tuner malfunction 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.
TV users and owners need to remember that attempts to self-repair a LG 47LE5300 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual and schematic diagram -------------------------------> LG 47LE5300 Chassis LD01D
The appearance of the MainBoard EAX61766102 is shown in the figure below:EAX61766102
EAX61766102 can be used in TVs:
LG 42LE4500 ZA (Panel LC420EUG), LG 42LE4508 ZA (Panel T420HW07 V.5), LG 37LE5300 (Panel LC370EUH (SC)(A1)), LG 32LE4500 ZA (Panel T315HW05 V.3), LG 32LE5300 ZA (Panel T315HW05 V.1), LG 32LE3300 32LE3300-ZA.BRUWLJU (Panel LC320EXN (SC)(A1)), LG 37LE4500 37LE4500-ZA (Panel T370HW04 V.4 ), LG 32LE5450 -ZA (Panel LC320EUH (SC)(A1)).
The appearance of the power supply
Main features of the device LG 47LE5300:
Installed matrix (LCD panel) LC470EUH (SC) (A1).
To power the backlight, a converter is used, combined with the power supply, controlled by the YP4247LPB PWM controller.
The necessary supply voltages for all nodes of the LG 47LE5300 TV are generated by the EAY60803401 power module or its analogs using PFC, PWM microcircuits and power switches of the N-FET TO-220F type.
MainBoard - the main board (motherboard) is an EAX61766102 module using CPU chips: LGE101DB-LF-T8, SDRAM: K4B1G1646E-HCH9, Flash: W25Q80, EEPROM: 24C1024 and others.
The TDTJ-S001D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC470EUH-SCA1
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: 450 cd / m²
Contrast Ratio: 1400: 1
Display Colors: 1.07B (8-bit + Dithering), CIE1931 72%
Response Time: 8/10 (Tr / Td)
Frequency: 120Hz
Lamp Type: WLED Without Driver
Signal Interface: Mini LVDS, 120 pins
Voltage: 12.0V