Technical description and composition of the LG 32LH200C-TA TV, panel type and applicable modules. The composition of the modules.LG
Model: 32LH200C-TA
Chassis / Version: LP91Z
Panel: LK315T3LA77
T-CON: 5870C-0238B
Inverter (backlight): VIJ38014
Power Supply (PSU): EAX62106801 / 1
PWM Power: L6599D (PWM Resonant), HS01G (PFC), ICE3B0365J (Standby)
MOSFET Power: K5A60D, K13A60D
MainBoard: EAX63025501 (0)
IC MainBoard: LGE3767A-LF-SH, 24C08W, JLC1562B, TPA3124D2, NTP-3100L, 24LC256
Tuner: TAFT-Z203D
Control: AKB69680403
Appearance
LG 32LH200C-TA
General recommendations for repairing TV LCD
It is advisable to begin repairing an LG TV with an LP91Z chassis with a careful external inspection of both internal and external elements. Many visible changes in the state of the elements make it possible to determine the future direction of troubleshooting and localizing the defect. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
Sometimes the LG 32LH200C-TA TV simply 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 EAX62106801 / 1 common power module. If it is working properly, you need to check the processor batteries on the SSB (Main Board). 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 K5A60D, K13A60D, for the possibility of an avalanche or thermal breakdown.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the PWM controller chip L6599D, HS01G, ICE3B0365J, which can only be checked by replacing with a new or obviously working one.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter feeding the inverter should be checked. When disabling protection in order to enable the diagnosis of a malfunction, special care should be taken, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
In cases of attempts to repair the motherboard EAX63025501 (0), it is necessary to check the performance 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. If it is not possible to replace the MB board (SSB), you must check the health of its elements - LGE3767A-LF-SH, 24C08W, JLC1562B, TPA3124D2, NTP-3100L, 24LC256, Tuner TAFT-Z203D. Defective components should be replaced.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
SCHEMATIC MANUAL ----------------> LG 32LH200C, 32LH200C-TA, 32LH210C, 32LH210C-TA, 32LH220H, 32LH220H-TA Chassis LP91Z
The 32LH200C-TA is equipped with an EAX62106801 / 1 power module u
sing the PFC (Power Factor Correction) circuitry, which acts as an active filter to eliminate the higher harmonic components of the current consumption. The step-up converter based on the HS01G PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected to the network directly through open diodes when the charge current is determined by its reactance (of the order of 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.The appearance of the power supply
Main features of the device LG 32LH200C-TA:
Installed matrix (LCD panel) LK315T3LA77.
The matrix control uses the Timing Controller (T-CON) 5870C-0238B.
To power the backlight used inverter VIJ38014.
The necessary supply voltages for all nodes of the LG 32LH200C-TA TV are generated by the EAX62106801 power module or its analogs using L6599D (PWM Resonant), HS01G (PFC), ICE3B0365J (Standby) microcircuits and power switches of the K5A60D, K13A60D type.
MainBoard - the main board (motherboard) is an EAX63025501 module, using chips LGE3767A-LF-SH, 24C08W, JLC1562B, TPA3124D2, NTP-3100L, 24LC256 and others.
The TAFT-Z203D tuner provides television reception and channel tuning.
Information from an alternative source:
LG 32LH200C-TA chassis LP91Z
Panel Type (Matrix): LK315T3LA77,
Motherboard: EAX63025501 (0), LGE3767A-LF-SH, 24C08W, 24LC256, JLC1562B x2, NTP-3100L, TPA3124D2, Tuner: TAFT-Z203D
T-con: 5870C-0238B
Invertor: VIJ38014,
PSU: EAX62106801 / 1, SMPS - L6599D & K5A60D, TR Chopper - LPM-101, SMPS - HS01G & K13A60D, TR Chopper - LP-002, SMPS - ICE3B0365J, TR Chopper - LS-002
Remote control: AKB69680403
Additional technical information about the panel:
Brand: SHARP
Model: LK315T3LA77
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: ASV, Normally Black, Transmissive
Active Area: 697.69x392.26 mm
Surface: Antiglare, Hard coating (2H)
Brightness: 450 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 16.2M (8-bit)
Response Time: 7 (G to G)
Frequency: 60Hz
Lamp Type: 8 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
