Technical description and composition of the LG 32LD335 TV, panel type and applicable modules. The composition of the modules.LG
Model: 32LD335 ZA
Chassis / Version: LD01B
Panel: T315XW03 V.1
T-CON: T315XW03 V2 31T08-C08
Inverter (backlight): VIT71884.00 REV: 2.LOGAH
PWM Inverter: OZ964SN
Power Supply (PSU): EAX62106803 / 1
PWM Power: ICE3B0365J (Standby), L6599D, L6562A (PFC)
MainBoard: EAX63329201 (3) EBR72642749
IC MainBoard: SPI Flash: W25Q80BVSIG; EEPROM: 24C16WP, 24C08W1
Tuner: EBL60721201 TDTJ-S001D
Control: IR: LD320 Ver1.0 0XDA9DV3.0E
Specifications 32LD335
LG 32LD335
General recommendations for repairing TV LCD
Diagnostics of malfunctions and repairs LG 32LD335 ZA, as well as other electronic devices, it is recommended to start 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. 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.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain chance that the EAX62106803 / 1 power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of standby power. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the filter of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If when you turn on the LG 32LD335 there is no image, or it appears for a second and disappears completely, but there is sound, most likely either the backlight or the power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit. Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
If the EAX63329201 (3) EBR72642749 motherboard is faulty, first of all it is necessary to check all the linear stabilizers and power converters of its chips, and also, if necessary, update the software (software). Sometimes you can check the health of MB only by replacement. In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its SPI Flash chips: W25Q80BVSIG; EEPROM: 24C16WP, 24C08W1 and other possible defective components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before changing the tuner EBL60721201 TDTJ-S001D, if it is not possible to tune to television channels, make sure that there are supply voltages that need to be measured at the corresponding terminals of the tuner and check the software for correctness.
For owners of 32LD335 TVs, we recommend that you contact qualified professionals with work experience for repairs! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual and schematic diagram ---------------------> LG 32LD335 Chassis LD01B
MODELS: 32LD325, 32LD335, 32LD325-ZA, 32LD335-ZA, 32LD336, 32LD336-ZB
The appearance of the MainBoard EAX63329201 is shown in the figure below:EAX63329201
EAX63329201 can be used in TVs:
LG 42LD555-ZC (Panel LC420WUG (SC)(A1)), LG 32LD335 ZA (Panel T315XW03 V.1), LG 37LD425 ZA (Panel T370HW03 V.B), LG 42LD425 (Panel LC420WUG (SC)(A1)), LG 26LD335 26LD335-ZA.BRUDLJU (Panel T260XW04 V.3).
The appearance of the power supply
Main features of the device LG 32LD335:
The matrix (LCD panel) T315XW03 V.1 is installed.
The matrix control uses the Timing Controller (T-CON) T315XW03.
The VIT71884.00 inverter is used to power the backlight, controlled by the OZ964SN PWM controller.
The necessary supply voltages for all nodes of the LG 32LD335 TV are generated by the EAX62106803 power supply module or its analogs using ICE3B0365J (Standby), L6599D, L6562A (PFC) microcircuits.
MainBoard - the main board (motherboard) is an EAX63329201 module using SPI Flash chips: W25Q80BVSIG; EEPROM: 24C16WP, 24C08W1 and others.
The tuner EBL60721201 TDTJ-S001D provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T315XW03 V1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: VA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V