Technical description and composition of the LG 26LK330 TV, panel type and applicable modules. The composition of the modules.LG
Model: 26LK330
Chassis / Version: LA01U
Panel: T260XW04 V.9
T-CON: 31T1Q0-T00 T315XW04 V1
Inverter (backlight): VIT71886.00 REV: 2LOGAH
PWM Inverter: OZ964SN
MOSFET Inverter: P2904BD, P4004ED
Power Supply (PSU): EAX63985401 / 5 LGP26-11P
PWM Power: L6599AD (PWM Resonant), 3BR4765JZ (Standby)
MainBoard: EAX64113202 (0)
IC MainBoard: CPU: LGE107DC-RP, DDR: H5TQ1G63DFR-PBC, Nand: K9F1G08U0D, FLASH 25Q80
Tuner: TDTJ-S001D EBL60721201
Specifications 26LK330
LG 26LK330
General recommendations for repairing TV LCD
It is recommended that you start troubleshooting diagnostics and repairing LGs with the LA01U chassis, as well as other electronic devices, with an external inspection 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. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
If the LG 26LK330 does not turn on, no control lights on the front panel are on or blinking, therefore, there is a very high probability of a malfunction of the LGP26-11P EAX63985401 / 5 power module. In some cases, only the processor power regulator may be faulty. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
Sometimes the LG 26LK330 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all electrolytic capacitors of the filter according to the power supply of the inverter itself, including the power supply unit (power supply unit). It should be remembered that when protection is disabled in order to diagnose a malfunction, there is always a risk of failure of the power elements of the inverter. After repair, it is necessary to restore all standard converter protection circuits.
The EAX64113202 (0) motherboard must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary. Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the CPU elements: LGE107DC-RP, DDR: H5TQ1G63DFR-PBC, Nand: K9F1G08U0D, FLASH 25Q80. BGA chip malfunctions are usually easy to detect by warming up.
Remember! Attempts to self-repair by users of the LG 26LK330 TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
LG CHASSIS: LA01U MODEL: 26LK330 26LK330-UB SERVICE MANUAL
The appearance of the MainBoard EAX64113202 is shown in the figure below:EAX64113202
The appearance of the power supply
Main features of the device LG 26LK330:
Installed matrix (LCD-panel) T260XW04 V.9.
The matrix control uses the Timing Controller (T-CON) 31T1Q0-T00.
The VIT71886.00 inverter is used to power the backlight lamps, it is controlled by the OZ964SN PWM controller. As power elements of the inverter, keys of the type P2904BD, P4004ED are used.
The necessary supply voltages for all nodes of the LG 26LK330 TV are generated by the EAX63985401 power module, or its analogs using L6599AD (PWM Resonant), 3BR4765JZ (Standby) microcircuits.
MainBoard - the main board (motherboard) is an EAX64113202 module using CPU chips: LGE107DC-RP, DDR: H5TQ1G63DFR-PBC, Nand: K9F1G08U0D, FLASH 25Q80 and others.
Tuner TDTJ-S001D EBL60721201 provides the reception of television programs and tuning to channels.
Information from an alternative source:
LG 26LK330-ZB Chassis LA01U
Panel Type (Matrix): T260XW04 V.9
Motherboard: EAX64113202 (0), Tuner: TDTJ-S001D * EBL60721201
T-con: 31T1Q0-T00 T315XW04 V1 TEST BD
Invertor: VIT71886.00 REV: 2LOGAH, IR: BM-LDS103 Ver1.0
PSU: LGP26-11P EAX63985401 / 5
Additional technical information about the panel:
Brand: AUO
Model: T260XW04 V9
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V