Technical description and composition of the LG 43LH513V TV, panel type and applicable modules. The composition of the modules.LG LED
Model: 43LH513V
Chassis / Version: LD67C
Panel: HC430DUN-SLVX1 - 511X // LC430DUE (FJ) (A1)
LED backlight: 43LH51_FHD_A Type 7LED 850mm
T-CON: 43T01-C09 p / n: T430HVN01.A // 6870C-0532C: SW0871, TPC65175C, BR24T08
LED driver (backlight): with integrated MainBoard
PWM LED driver: MP3378E
MOSFET LED driver: AOD2922
Power Supply (PSU): DA-65F19 Adapter 19V 3.42A
MainBoard: EAX66805906 p / n: EBU63606621 // EAX66805906 (1.0)
IC MainBoard: LGE6351, H27U1G8F, MX25L8035E, LCX244, MP2315 (TSOT23-8 Marking: AGCG), DT1803A, SN1406035, NTP7515D
Tuner: TDJA-G301D // TDJM-G301D (EBL61741401)
Specifications 43LH513V
LG 43LH513V
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The LG 43LH513V TV does not turn on and does not show any signs of operability. There is no reaction to either the remote control or the control buttons from the front panel.
In the vast majority of such cases, a malfunction is detected in the DA-65F19 power supply module.
The owner of a TV can purchase an external power supply unit such as DA-65F19 and repairing it is not always advisable. In any case, the simplest typical defects characteristic of most IIP schemes can be easily detected and eliminated after opening. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary first of all to check the power switches 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, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. PWM IC_Power may also cause a malfunction of the power switch of the converter and is checked by replacement.
- 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.
In most cases, the malfunction is caused by the lack of a backlight display. The reason can be both in the power of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the EAX66805906 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 - H27U1G8F, SPI FLASH: MX25L8035E. Defective components should be replaced.
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 voltages at the terminals of the TDJA-G301D tuner. 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.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
To reduce the backlight current in LED drivers with the MP3378E PWM controller, it is necessary to proportionally increase the total resistance of the resistors from pin 3 (RISET) to the chassis. Calculation of current in milliamperes and resistance in kilo-ohms 977 / Rset for each channel. Parallel channels are summed. For example, for four parallel channels and a RISET 10 KOhm resistance, the total current will be 97.7 * 4 = 391 mA.
FIRMWARE SPI FLASH LG 43LH513V LD67C, Main: EAX66805906 (1.0), Panel: LC430DUE (FJ)(A1)
LG 43LH513V Chassis: LD67C Panel: LC430DUE (FJ)(A1)
Main: EAX66805906 (1.0): TDJM-G301D (EBL61741401, LGE6351, H27U1G8F, MX25L8035E, LCX244, MP2315 (TSOT23 Marking:AGCG ), DT1803A, SN1406035, MP3378E (LED driver), AOD2922, NTP7515D.
T-CON:6870C-0532C: SW0871, TPC65175C, BR24T08
The appearance of the MainBoard EAX66805906 is shown in the figure below:EAX66805906
EAX66805906 can be used in TVs:
LG 32LH510U (Panel HC320DXN-VSVS1 - 511X), LG 43LH513V (Panel HC430DUN-SLVX1 - 511X), LG 32LH520U (Panel HC320DXN-ABVS2-5112), LG 43LH520V (Panel LC430DUE (FJ)(A1)), LG 32LH513U LG 32LH513U-ZE (Panel HC320DXN-VHVS1-214X), LG 49LH520V (Panel LC490DUE (FJ)(A1)).
The appearance of the power supply
Main features of the device LG 43LH513V:
Installed matrix (LED-panel) HC430DUN-SLVX1 - 511X or LC430DUE (FJ) (A1).
The matrix control uses the Timing Controller (T-CON) 43T01-C09.
To power the backlight LEDs, a converter is used, combined with the main board EAX66805906, controlled by the MP3378E PWM controller. As power elements of the LED driver, keys of the AOD2922 type are used.
To power all the internal components of the LG 43LH513V TV, an external source of the type DA-65F19 Adapter 19V 3.42A is used.
MainBoard - the main board (motherboard) is an EAX66805906 module using LGE6351, H27U1G8F, MX25L8035E, LCX244, MP2315 (TSOT23-8 Marking: AGCG), DT1803A, SN1406035, NTP7515D and others microcircuits.
Tuner TDJA-G301D // TDJM-G301D (EBL61741401) provides the reception of television programs and tuning to channels.