Technical description and composition of the LG 32LX2R TV, panel type and applicable modules. The composition of the modules.LG
Model: 32LX2R ZE
Chassis / Version: ML-051A
Panel: LC320W01
Inverter (backlight): M: LC320W01 YPNL-T009A REV-0.9 6632L-0207A S: LC320W01
PWM Inverter: MSC1691AI, KIA339F
MOSFET Inverter: FDS6958A (8), AP9934GM
Power Supply (PSU): YP2632T 02/05/16 RevA.2
PWM Power: I3002L (8), 7601 (8), MIC4428BM (8),
MOSFET Power: W20NM60, P9NK60Z, P7NK80ZFP
MainBoard: ML-051A (AV) 6870TB35B66, 6870TA88A64
IC MainBoard: FLI8532-LF, NSP-2100A, CXA2069Q, MPS4410K B3, 05DZ11,
Tuner: TAFM-W103P
Technical Specifications RZ-32LX2R
LG 32LX2R
General recommendations for repairing TV LCD
Diagnostics of malfunctions and repairs of LG with the ML-051A chassis, as well as other electronic devices, is recommended to begin with an external examination of the external and internal elements. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
In the absence of any signs of operability, when the LG 32LX2R does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power supply YP2632T 05.02.16 RevA.2. With the same manifestations, the power regulator of the control processor on the motherboard 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.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller 13002L (8), 7601 (8), MIC4428BM (8), which can only be checked by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the LG 32LX2R 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. 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.
If the motherboard ML-051A (AV) 6870TB35B66, 6870TA88A64, tun TAFM-W103P is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement. In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - FLI8532-LF, NSP-2100A, CXA2069Q, MPS4410K B3, 05DZ11, which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Attention to the owners! Attempts to repair the LG 32LX2R TV independently are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATIC MANUAL -----------------------> LG 26LX2R-ME, 32LX2R-ME Chassis ML-051A
Main features of the device LG 32LX2R:
Installed matrix (LCD-panel) LC320W01.
To power the backlight, an inverter M: is used, it is controlled by the PWM controller MSC1691AI, KIA339F. As power elements of the inverter, keys of the type FDS6958A (8), AP9934GM are used.
The necessary supply voltages for all nodes of the LG 32LX2R TV are generated by the YP2632T power module or its analogs using I3002L (8), 7601 (8), MIC4428BM (8) microchips, and power switches of the type W20NM60, P9NK60Z, P7NK80ZFP.
MainBoard - the main board (motherboard) is an ML-051A (AV) module, using the chips FLI8532-LF, NSP-2100A, CXA2069Q, MPS4410K B3, 05DZ11, and others.
The TAFM-W103P tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320W01-SL20
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: 800: 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
