Technical description and composition of the LG 32LX1R-ZE TV, panel type and applicable modules. The composition of the modules.LG
Model: 32LX1R-ZE
Chassis / Version: ML-051A
Panel: LC320W01 - SL11
Inverter (backlight): LC320W01 REV-0.3 6632L-0207B 6632L-0208B
PWM Inverter: MSC1691AI, A358F, A394F, AO9934GM, KIA339F
MOSFET Inverter: FDS8958A
Power Supply (PSU): YP2632T REV A2
PWM Power: I3002FL, FAN7601
MOSFET Power: W20NM60, P9NK60Z, P7NK80ZFP, AO4428B
MainBoard: 6870TA88A15
IC MainBoard: FLI8125-LF, M24C32, SST25FV040, AT24C256W, FLI8532-LF, NSP-2100A
Technical Specifications RZ-32LX1R
LG 32LX1R-ZE
General recommendations for repairing TV LCD
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should inspect all the internal elements of the ML-051A chassis, as well as the external chassis. Using visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before the necessary measurements are taken. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the power supply module YP2632T REV A2 malfunctions, the external manifestations may be different, for example, the LG 32LX1R-ZE does not turn on at all and there is no indication of the indicator lights on the front panel. With the same symptoms, the stabilizer (converter) of the power supply to the control processor may be faulty. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors W20NM60, P9NK60Z, P7NK80ZFP for the possibility of an avalanche or thermal breakdown.
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-regulator chip 13002FL, FAN7601, AO4428B, which it is desirable to check by replacement, are subject to verification.
If the LG 32LX1R-ZE TV does not have an image, but there is sound, the malfunction should be sought in the backlight lamp power converter (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply) for an overstated ESR. If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after their completion it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
In cases of attempts to repair the motherboard 6870TA88A15, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating. Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements FLI8125-LF, M24C32, SST25FV040, AT24C256W, FLI8532-LF, NSP-2100A. BGA chip malfunctions are usually easy to detect by warming up.
Attention! For users and owners of 32LX1R-ZE TVs who do not have the appropriate qualifications, knowledge and experience, we strongly do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
SCHEMATIC MANUAL -----------------------> LG 32LX1R-ZE Chassis ML-051A
Main features of the device LG 32LX1R-ZE:Installed matrix (LCD panel) LC320W01 - SL11.
An LC320W01 inverter is used to power the backlight, it is controlled by a PWM controller MSC1691AI, A358F, A394F, AO9934GM, KIA339F. As power elements of the inverter, keys of the FDS8958A type are used.
The necessary supply voltages for all nodes of the LG 32LX1R-ZE TV are generated by the YP2632T power module or its analogs using I3002FL, FAN7601 microcircuits and power switches of the type W20NM60, P9NK60Z, P7NK80ZFP, AO4428B.
MainBoard - the main board (motherboard) is a module 6870TA88A15, using chips FLI8125-LF, M24C32, SST25FV040, AT24C256W, FLI8532-LF, NSP-2100A and others.
Information from an alternative source:
LG 32LX1R-ZE chassis ML-051A Matrix: - LC32W01 - SL11
Motherboard: - 6870TA88A15, IC700 - FLI8125-LF (TORNADO HUDSON V: 3.60), IC701 - M24C32, IC702 - SST25FV040, IC800 - FLI8532-LF, IC804 - AT24C256W, IC901 - HY5DU28162ET-528282PET, IC2822828PET-2, IP281622PET - NSP-2100A,
PSU: - YP2632T REV A2, IC301 - 13002FL, IC302, IC304 - FAN7601, IC303 - AO4428B, Q1 - W20NM60, Q102, Q103 - P9NK60Z, Q104 - P7NK80ZFP, Master: - LC320W01 REV-0.3, Q6, Q8, Q6, Q6 , Q12, Q13 - FDS8958A, U1 - MSC1691AI, U3 - A358F, U4 - A394F, U6 - AO9934GM, U8 - KIA339F, Slave: - LC320W01 REV-0.3, Q206, Q207, Q208, Q211, Q212, Q813 - - A393F, U206 - AO9934GM
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320W01-SL11
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1600: 1
Display Colors: 16.7M (8-bit)
Response Time: 8/10 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 18 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V