Technical description and composition of the LG 47LX6500 TV, panel type and applicable modules. The composition of the modules.LG LED
Model: 47LX6500 ZD
Chassis / Version: LD03R
Panel: LC470EUS (SC) (A1)
T-CON: LA02M EAX62110705 (0)
LED driver (backlight): integrated into PSU
Power Supply (PSU): EAY60803202 YP47LPBA
MainBoard: EAX62116804 (0) EBT61136203
IC MainBoard: LGE3556CP, M24C16, NAND04GW3B2DN6E, NT5TU128M8DE, EAN60969601, UPD78F0513AGA-GAM-AX, TDA19997
Tuner: TDFR-G155D
Control: AKB72914020, IR: YW06B96201A
Specifications 47LX6500
LG 47LX6500
General repair guidelines for TV LCD LED
Possible manifestations of defects
- LG 47LX6500 does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
In some of these cases, a fault is detected in the EAY60803202 power module. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, it is necessary to check the serviceability of power switches and rectifier diodes for possible breakdown (short circuit).
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
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, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
As a rule, in such cases there is no display backlight. 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 indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the EAX62116804 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 attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - LGE3556CP, M24C16, NAND04GW3B2DN6E, NT5TU128M8DE, EAN60969601, UPD78F0513AGA-GAM-AX, TDA19997 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the TDFR-G155D tuner and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Typical defects of LG TVs with LGE3556C processors are provoked by its severe temperature conditions and the quality of the LGE3556C processor itself.Attention TV owners! Self-repair attempts by LG 47LX6500 are not recommended by the manufacturer and can lead to serious negative consequences!
External manifestations may be different - the tuner or external inputs do not work, or the TV does not turn on, for example, the control lamp blinks or hangs on the screen saver.
If, when the processor warms up, performance is restored, in such cases a reball can sometimes help. Then there is the opportunity to extend the life of the TV with the help of an additional heat sink or cooler.
When replacing the processor, it should be borne in mind that they are discontinued and all LGE3556C, which sellers ALIexpress send, in most cases control units, are often already faulty.
Service manual / schematic diagram ----------------> LG 47LX6500, 47X6500-ZD Chassis LD03R
The appearance of the MainBoard EAX62116804 is shown in the figure below:EAX62116804
The appearance of the power supply
Main features of the device LG 47LX6500:
Installed matrix (LED-panel) LC470EUS (SC) (A1).
The matrix control uses the Timing Controller (T-CON) LA02M.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the LG 47LX6500 TV is carried out by the EAY60803202 power module, or its analogues.
MainBoard - the main board (motherboard) is an EAX62116804 module using LGE3556CP, M24C16, NAND04GW3B2DN6E, NT5TU128M8DE, EAN60969601, UPD78F0513AGA-GAM-AX, TDA19997 and other chips.
The TDFR-G155D tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC470EUS-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: 1300: 1
Display Colors: 1.06B (8-bit + Dithering)
Response Time: 6/6 (Tr / Td)
Frequency: 120Hz
Lamp Type: WLED Without Driver
Signal Interface: Mini LVDS, 160 pins
Voltage: 12.0V
