Technical description and composition of the LG 32CS466 TV, panel type and applicable modules. The composition of the modules.LG
Model: 32CS466
Chassis / Version: LD21C / LC21B
Panel: LC320WXN (SC) (A4)
T-CON: LC320WXN-SCA2 6870C-0313C
Inverter (backlight): 6632L-0637A 3PEGA20004A-R PNEC-D032A
PWM Inverter: OZ9966SN
MOSFET Inverter: AOD4184
Power Supply (PSU): EAX64604501 (1.5)
PWM Power: L6599AD, HS01G, FSL106HR
MOSFET Power: 10M60N
MainBoard: EAX64664903 (1.0) EBR75149811
IC MainBoard: LGE2111A-T8, K4B1G1646G-BCKO, STA3808 WE, AS324M, TJ3940, LCX244, Z105NP, AP7173
Tuner: TDSN-G301D
Control: IR: EBR74988702 LM35-55
Specifications 32CS466
LG 32CS466
General recommendations for repairing TV LCD
Possible malfunctions
- The LG 32CS466 TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
In such cases, the EAX64604501 power supply is usually faulty. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches (10M60N) of the converters and rectifier diodes for a short circuit probability.
In the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits (PWM) L6599AD, HS01G, FSL106HR are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
These manifestations can be triggered by a power module, or by defects in the inverter, as well as a distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the EAX64664903 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - LGE2111A-T8, K4B1G1646G-BCKO, STA3808 WE, AS324M, TJ3940, LCX244, Z105NP, AP7173 with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before replacing the TDSN-G301D tuner, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Attention! For users and owners of 32CS466 TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
The appearance of the MainBoard EAX64664903 is shown in the figure below:EAX64664903
EAX64664903 can be used in TVs:
LG 32CS460T (Panel LC320WXN (SC)(A4)), LG 42LS3400 (Panel LC420DUN (SE)(R2)), LG 32LS3400 ZC (Panel LC320DXN (SE)(R2)), LG 32LS3500 (Panel LC320EXN (SE)(A2)), LG 32CS466 (Panel LC320WXN (SC)(A4)), LG 32LS3590 32LS3590-ZC.BRUDLJU (Panel T320XVN01.1), LG 32LS359T (Panel LC320EXN (SE)(A2)), LG 42CS460T 42CS460T-ZA (Panel LC420WUE (SC)(A3)).
The appearance of the power supply
Main features of the device LG 32CS466:
Installed matrix (LCD panel) LC320WXN (SC) (A4).
The matrix control uses the Timing Controller (T-CON) LC320WXN-SCA2.
To power the backlight, an inverter 6632L-0637A is used, it is controlled by the PWM controller OZ9966SN. As power elements of the inverter, keys of the AOD4184 type are used.
The necessary supply voltages for all nodes of the LG 32CS466 TV are generated by the EAX64604501 power module or its analogs using L6599AD, HS01G, FSL106HR microcircuits and 10M60N power switches.
MainBoard - the main board (motherboard) is an EAX64664903 module using LGE2111A-T8, K4B1G1646G-BCKO, STA3808 WE, AS324M, TJ3940, LCX244, Z105NP, AP7173 and other chips.
The TDSN-G301D tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC320WXN-SCA4
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V