Technical description and composition of the LG 26LS3510 TV, panel type and applicable modules. The composition of the modules.LG LED
Model: 26LS3510 ZB.BRUYLJU
Chassis / Version: LD21A
Panel: LC260EXN (SD) (A1)
T-CON: EBL61660001
LED driver (backlight): integrated into MainBoard
PWM LED driver: DT1641S
MOSFET LED driver: AP18T10GH
Power Supply (PSU): Adapter AC / DC 24V; 2.75A
MainBoard: EAX64702603 (1.0) EBR75149001
IC MainBoard: CPU: LGE2111A-T8, APSW286ZC, SPI Flash: W25Q80BVSIG, EEPROM: 24C256
Tuner: TDSS-G101D EBL61660001
Specifications 26LS3510
LG 26LS3510
General repair guidelines for TV LCD LED
An external examination of the external and internal elements should be carried out in a timely manner before the start of operations for their dismantling. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain probability that the adapter AC / DC 24V power supply module is faulty; 2.75A and it needs repair. Sometimes with similar manifestations a problem can only occur in the absence of standby power. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the rectifier bridge of the mains voltage and the power key (s) of the converter. The complete inoperability of the power supply unit can be caused by a short circuit in the power elements in the primary circuit, followed by an open fuse, or a short circuit in the loads.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If, when you turn on the TV, the image appears and immediately disappears, or is missing initially when you turn on, but the sound has other functions that work, there is a high probability of a malfunction of the LED driver (power converter for the backlight LEDs of the LC260EXN (SD) panel (A1)).
In case of breaks in the LED circuit, a complete disassembly of the panel is required, the LEDs are checked for an open circuit, as well as the reliability of the connections in the connectors and rations of the terminals.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can test each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the LED will light up slightly.
The motherboard EAX64702603 (1.0) EBR75149001 must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up constantly. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary.
In some cases, it is necessary to check or replace (if necessary) the elements of the MB board (SSB) - CPU: LGE2111A-T8, APSW286ZC, SPI Flash: W25Q80BVSIG, EEPROM: 24C256. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If the TV works normally from external devices, but does not tune into television channels, the TDSS-G101D EBL61660001 tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. Sometimes the cause of the inoperability of the tuner may be a software failure.
Once again, remind users! Attempts to self-repair the LG 26LS3510 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
LG Chassis LD21A; 26LS3500, 26LS350S, 26LS350T, 26LS3510 - ZA/ZB/ZC SERVICE MANUAL
To reduce the backlight current in LED drivers with the DT1641AS controller (DT1641S), you can increase the total resistance of the resistors from pin 7 (RISET) to the chassis. The exact proportional dependence may not be observed if there is additional control on this input, then the ratings should be selected empirically.
More details on this page
The appearance of the MainBoard EAX64702603 is shown in the figure below:EAX64702603
EAX64702603 can be used in TVs:
LG 26LS3500 (Panel LC260EXN (SD)(A1)), LG 26LS3510 ZB.BRUYLJU (Panel LC260EXN (SD)(A1)), LG 22LS3500 22LS3500-ZA (Panel V216BG1-LE1 REV.C1).
Main features of the device LG 26LS3510:
Installed matrix (LED-panel) LC260EXN (SD) (A1).
The matrix control uses the Timing Controller (T-CON) EBL61660001.
To power the backlight LEDs, a converter is used, combined with the EAX64702603 main board, controlled by the DT1641S PWM controller. As power elements of the LED driver, keys of the type AP18T10GH are used.
To power all the internal components of the LG 26LS3510 TV, an external adapter type AC / DC 24V is used; 2.75A.
MainBoard - the main board (motherboard) is an EAX64702603 module using CPU chips: LGE2111A-T8, APSW286ZC, SPI Flash: W25Q80BVSIG, EEPROM: 24C256 and others.
Tuner TDSS-G101D EBL61660001 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC260EXN-SDA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V