Technical description and composition of the LG 32LH2010 TV, panel type and applicable modules. The composition of the modules.LG
Model: 32LH2010
Chassis / Version: LD91A / G
Panel: LK315T3LA57
T-CON: LK315T3LA57
Power Supply (PSU): LGP32-09P EAX55176301
PWM Power: ICE3B0365J (Standby), L6599D (PWM Resonant), L6562A (PFC)
MOSFET Power: TK13A60D (PFC), TK6A60D
MainBoard: EAX60686904 (2)
IC MainBoard: CPU: LGE3368A (Saturn-6); NAND Flash: HY27US08121B-TPCB; SPI Flash: W25X32VSSIG; SOUND: NTP3100;
Tuner: TDFW-G235D
Control: IR: YW98497401A 0XDA35V2.0L
Specifications 32LH2010
LG 32LH2010
General recommendations for repairing TV LCD
Repair of electronic devices, including the LG 32LH2010 TV, it is advisable to start with an external examination of its external and internal elements. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. Experienced repairmen are well aware of how ring cracks in soldered terminals look, swollen capacitors, and other causes of problems in electronic devices.
If the TV does not turn on, no control lights are on or blinking, there are no sounds when you turn on, and there is not the slightest sign of operability - the most likely malfunction is in the power module. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse is broken, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
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 cause may be a malfunction of the IC500 ICE3B0365J PWM controller chip; IC100 L6599D; IC600 L6562A, which can only be checked by replacing with a new or obviously working one.
In cases where the LG 32LH2010 TV has lost an image, and the sound is there and all the other functions are operational, there is a possibility of a malfunction of the inverter (converter for powering the backlight). When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power. 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.
In cases of attempts to repair the motherboard EAX60686904 (2), it is necessary to check the operability of the linear stabilizers and power converters of its microcircuits and, if possible, update the software (software). BGA chips can sometimes be diagnosed with 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 CPU elements: LGE3368A (Saturn-6); NAND Flash: HY27US08121B-TPCB; SPI Flash: W25X32VSSIG; SOUND: NTP3100; . BGA chip malfunctions are usually easy to detect by warming up.
The TDFW-G235D tuner malfunction is established after checking the software and all supply voltages at its terminals.
Attention to users! Self-repair of the LG 32LH2010 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATIC MANUAL --------------> LG CHASSIS: LD91A; 32LH2000 32LH2000-ZA, 32LH2010 32LH2010-ZB SERVICE MANUAL
SCHEMATIC PSU --------------------> LGP32-09P POWER SUPPLY
The appearance of the MainBoard EAX60686904 is shown in the figure below:EAX60686904
EAX60686904 can be used in TVs:
LG 32LD320 (Panel T315XW03 V1), LG 32LD320-ZA (Panel T315XW03), LG 32LH4000-ZA (Panel LC320WUN), LG 32LH2000 (Panel LK315T3LA57), LG 32LH2010 (Panel LK315T3LA57), LG 32LF2510 ZB (Panel LC320WUN (SA)(B3)), LG 37LH2000 (Panel LC370WXE (SB)(A1)), LG 19LD320 ZA (Panel M185B1-L02 Rev.C3), LG 26LH2000 (Panel T260XW02 V.R), LG 32LG2100 (Panel LC320WXN), LG 22LH2000 ZA (Panel V216B1-L02), LG 42LH2000 ZA.ARUVLH (Panel LC420WXE (SB)(A1)), LG 32LD321 32LD321-ZB (Panel T315XW03 V1), LG 26LD320 (Panel T260XW04 V.3), LG 19LH2000 19LH2000-ZA (Panel M185B1-L03).
PSU Advanced
The LGP32-09P power supply module is made using a Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced into the power supply by the device. The PFC assembly is a Step-Up Converter based on the L6562A PWM controller, which evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the mains voltage rectifier filter within a 50 Hz period. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of an increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the device LG 32LH2010:
Installed matrix (LCD panel) LK315T3LA57.
The matrix control uses the Timing Controller (T-CON) LK315T3LA57.
The necessary supply voltages for all nodes of the LG 32LH2010 TV are generated by the LGP32-09P power supply module or its analogs using ICE3B0365J (Standby), L6599D (PWM Resonant), L6562A (PFC) microcircuits, and TK13A60D (PFC), TK6A60D type power switches.
MainBoard - the main board (motherboard) is an EAX60686904 module, using CPU chips: LGE3368A (Saturn-6); NAND Flash: HY27US08121B-TPCB; SPI Flash: W25X32VSSIG; SOUND: NTP3100; and others.
The TDFW-G235D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SHARP
Model: LK315T3LA57
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: ASV, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (2H)
Brightness: 500 cd / m²
Contrast Ratio: 2500: 1
Display Colors: 16.7M (8-bit)
Response Time: 7 (G to G)
Lamp Type: 10 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V