Technical description and composition of the LG 26LX2R-ME TV, panel type and applicable modules. The composition of the modules.LG
Model: 26LX2R-ME
Chassis / Version: ML-051A 32LX2R-ME
Panel: LC260WX2-SL03
Power Supply (PSU): 6871TPT316B TORNADO 26-32
MainBoard: ML-051A
IC MainBoard: NSP-2100A, MX29LV160CTTC-70G, SST25VF040-20, HY5DU281622ETP-5, FLI8125BB-LF
Technical Specifications RZ-32LX2R
LG 26LX2R-ME
General recommendations for repairing TV LCD
Repair of all electronic devices, including the LG TV, made on the basis of the ML-051A chassis, it is advisable to start with an external examination of its external and internal elements. Often, based on certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. 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.
Sometimes the LG 26LX2R-ME TV just does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the 6871TPT316B TORNADO 26-32 general power supply module. If it is working properly, you need to check the processor batteries on the SSB (Main Board). When diagnosing and repairing the power supply, first of all, replace the swollen filter capacitors of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
If the LG 26LX2R-ME does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU. Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Verification or replacement of elements NSP-2100A, MX29LV160CTTC-70G, SST25VF040-20, HY5DU281622ETP-5, FLI8125BB-LF requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
Attention to users! Self-repair of the TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC MANUAL ---------------------------------> LG 26LX2R-ME, 32LX2R-ME Chassis ML-051A
The appearance of the MainBoard EAX50912202 is shown in the figure below:EAX50912202
EAX50912202 can be used in TVs:
LG 26LG4000 (Panel T260XW02 V.R), LG 32LG4000 ZA (Panel LC320WXN (SB)(A3)).
Main features of the device LG 26LX2R-ME:
Installed matrix (LCD panel) LC260WX2-SL03.
The formation of the necessary supply voltages for all nodes of the LG 26LX2R-ME TV is carried out by the power supply module 6871TPT316B, or its analogs.
MainBoard - the main board (motherboard) is an ML-051A module, using NSP-2100A, MX29LV160CTTC-70G, SST25VF040-20, HY5DU281622ETP-5, FLI8125BB-LF and other chips.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC260WX2-SL03
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: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 8/9 (Tr / Td)
Frequency: 60Hz
Lamp Type: 18 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V