Technical description and composition of the LG 26LV2500 TV, panel type and applicable modules. The composition of the modules.LG LED
Model: 26LV2500 ZG
Chassis / Version: LD01P
Panel: LC260EXN (SD) (A1)
LED backlight: INNOTEK 26 REV 1.1 7020PKG 56EA
T-CON: LC260EXN-SDA1 6870S-1160A
LED driver (backlight): integrated into T-CON
PWM LED driver: BD9261EFV
Power Supply (PSU): Adapter AC / DC 24V 2.5A
MainBoard: EAX64280804 (0)
IC MainBoard: LGE2111A-T8, APGV626C, H5TQ1G63DFR, H27U1G8F2BTR, AT24C256C, 25Q80BVSIG, 24C08, AS324M-E1, AP2191D, TPS54319TRE, TPS54327, 74LVC3232 MAX, 32LVCC32G MAX
Tuner: TDSS-G101D EBL61060001
Control: AKB72915244
Specifications 26LV2500
LG 26LV2500
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs LG 26LV2500 ZG, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. 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. Electrolytic capacitors of filters with a swollen body, as well as ring cracks or a layer of coal on burned-out resistors formed in soldered leads of heated elements, sometimes prompt the repairman the causes of the malfunction and possible consequences.
If the 26LV2500 does not turn on, does not respond to the remote control and buttons on the front panel, does not blink light bulbs and does not show any signs of operability, the adapter AC / DC 24V 2.5A power supply module is probably faulty in this case. After checking the mains fuse and power elements of the primary power supply circuit, it should also check the absence of a short circuit in the loads of the secondary rectifiers.
A breakdown of the power switch of the pulse converter is often triggered by other elements, for example, in the stabilization or control circuits of this switch, as well as by the damper elements in its drain and TPI winding.
If the LG 26LV2500 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the backlight circuits of the LC260EXN (SD) panel (A1) is likely. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
A malfunction in the backlight circuits often occurs due to an open in the power circuit of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the rations of their terminals, as well as the reliability of the connections in the connectors and rations of the terminals.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
Diagnosis and repair of the EAX64280804 (0) motherboard usually begins with a test of the performance of the stabilizers and power converters of the module chips. In some cases, a software update is required.
When repairing an MB board, it is necessary to check its components LGE2111A-T8, APGV626C, H5TQ1G63DFR, H27U1G8F2BTR, AT24C256C, 25Q80BVSIG, 24C08, AS324M-E1, AP2191D, TPS54319TRE, TPS543213232324244244, 74PS, MAX, 74V, 74V, 74V Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating.
If the TV works normally from external devices, but does not tune into television channels, the TDSS-G101D EBL61060001 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.
For 26LV2500 TV owners, we recommend that you contact qualified professionals with work experience for repairs! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
SCHEMATIC MANUAL --------------------> LG CHASSIS: LD01P, MODEL: 26LV2500/250A/250N/250U/255C, 26LV2500/250A/250N/250U/255C-ZG, 26LV2540 26LV2540-ZL
The appearance of the MainBoard EAX64280804 is shown in the figure below:EAX64280804
Main features of the device LG 26LV2500:
Installed matrix (LED-panel) LC260EXN (SD) (A1).
The matrix control uses the Timing Controller (T-CON) LC260EXN-SDA1.
An integrated LED driver is used to power the backlight LEDs, it is controlled by the BD9261EFV PWM controller.
To power all the internal components of the LG 26LV2500 TV, an external adapter type AC / DC 24V 2.5A is used.
MainBoard - the main board (motherboard) is an EAX64280804 module, using the LGE2111A-T8, APGV626C, H5TQ1G63DFR, H27U1G8F2BTR, AT24C256C, 25Q80BVSIG, 24C08, AS324M-E1, AP2191D, TPS54319TRE, TPS54327, 74LVC1G32GW, LCX244, MP8670DN, MAX3232C, NTP-7400L and others.
Tuner TDSS-G101D EBL61060001 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