Technical description and composition of the LG 32LX2R-ZE 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 pin), AP9934GM
Power Supply (PSU): YP2632T REV A2
PWM Power: I3002FL, FAN7601
MOSFET Power: W20NM60, P9NK60Z, P7NK80ZFP, AO4428B
MainBoard: 6870TA88A64
IC MainBoard: FLI8532-LF, MX29LV160BTTC, ST24C32WP, SST25FV040, AT24C256W, HY5DU281622ETP-5
Tuner: M: LC320W01 YPNL-T009A REV-0.9 6632L-0207A S: LC320W01
Technical Specifications RZ-32LX2R
LG 32LX2R-ZE
General recommendations for repairing TV LCD
Repair of the LG TV with the ML-051A chassis should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. 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. 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-ZE 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 module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. First of all, it is necessary to replace the swollen capacitors of rectifier filters, if any. If the mains fuse is cut off in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
If the LG 32LX2R-ZE does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter 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 inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors. 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.
Repair or diagnostics of the 6870TA88A64 motherboard should begin by checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software). In cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - FLI8532-LF, MX29LV160BTTC, ST24C32WP, SST25FV040, AT24C256W, HY5DU281622ETP-5 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).
It should be remembered! Attempts to repair the TV LG 32LX2R-ZE, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
SCHEMATIC MANUAL -----------------------> LG 26LX2R-ME, 32LX2R-ME Chassis ML-051A.
The appearance of the MainBoard,The appearance of the power supply
Main features of the device LG 32LX2R-ZE:
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 pin), AP9934GM are used.
The necessary supply voltages for all nodes of the LG 32LX2R-ZE TV are generated by the YP2632T power module or its analogs using I3002FL, FAN7601 microchips and power switches of the type W20NM60, P9NK60Z, P7NK80ZFP, AO4428B.
MainBoard - the main board (motherboard) is a module 6870TA88A64, using chips FLI8532-LF, MX29LV160BTTC, ST24C32WP, SST25FV040, AT24C256W, HY5DU281622ETP-5 and others.
Tuner M: LC320W01 YPNL-T009A REV-0.9 6632L-0207A S: LC320W01 receives television programs and tunes to channels.
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