Technical description and composition of the LG 32LS5610 TV, panel type and applicable modules. The composition of the modules.LG LED
Model: 32LS5610
Chassis / Version: LD21B
Panel: T320HVN01.0
LED backlight: 74.32T20.001-1-DS1 - LG lnnotek 32inch 7030PKG 48EA_74580 Rev 0.2 20111025
T-CON: T315HW07 VB Ctrl BD 31T14-C0J
LED driver (backlight): 4H + V3416.001-A2
PWM LED driver: DF3421
MOSFET LED driver: PA610AD
Power Supply (PSU): EAX64310001 (1.7) EAY62512401 PSLC-L115A 3PAGC10080A-R
PWM Power: FAN7930B (PFC), L6599AD (PWM Resonant), ICE3BR4765JZ (Standby)
MOSFET Power: TK6P60V
MainBoard: EAX64317403 (1.0) EBR75149863 SAA35916735 SAA35948814
IC MainBoard: CPU: LGE2111A-T8, Nand: NAND01GW3B2CN6E, DDR: H5TQ1G63DFR-H9C, SPI Flash: W25Q80BV
Tuner: TDSS-G101D / TDSN-G301D
Control: IR: EBR74986702 LM35-55 MB32B00 1BF-3010B
Specifications 32LS5610
LG 32LS5610
General repair guidelines for TV LCD LED
Repair of the LG 32LS5610 TV should begin with a fault diagnosis, which involves a careful inspection of the external and internal elements of the device. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
In the absence of any signs of operability, when the LG 32LS5610 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's power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
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 32LS5610 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the backlight circuits of the T320HVN01.0 panel is likely. The LEDs or the power converter - LED driver 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 LED driver, and check the LEDs, connecting obviously known good diagnostics.
To check the health of the LEDs, as well as contact connections in the ruler circuit, the panel must be disassembled.
It should be remembered that it is not possible to determine the break in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
In cases of attempts to repair the motherboard EAX64317403 (1.0), it is necessary to check the operability 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.
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 CPU chips: LGE2111A-T8, Nand: NAND01GW3B2CN6E, DDR: H5TQ1G63DFR-H9C, SPI Flash: W25Q80BV and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before changing the tuner TDSS-G101D / TDSN-G301D, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner.
Owners and users of the LG 32LS5610 TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
SCHEMATIC-----------------------> LG Chassis LD21B 32LS5600/560S/560T/5620, 32LS5600/560S/560T-ZC 32LS5620-ZD, 32LS5610/561T 32LS5610/561T-ZA SERVICE MANUAL.
The appearance of the MainBoard EAX64317403 is shown in the figure below:EAX64317403
EAX64317403 can be used in TVs:
LG 32LM580S (Panel LC320EUN (SE)(F2)), LG 32LS5610 (Panel T320HVN01.0), LG 42LM580S ZA (Panel LC420EUE (SE)(F1)), LG 42LS5620 (Panel T420HVN01.1), LG 32LS5600 (Panel T320HVN01.0), LG 42LM585S -ZD (Panel LC420EUE (SE)(F1)).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the EAX64310001 module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the FAN7930B PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the device LG 32LS5610:
Installed matrix (LED-panel) T320HVN01.0.
The matrix control uses the Timing Controller (T-CON) T315HW07.
The LED driver 4H + V3416.001-A2 is used to power the backlight LEDs, it is controlled by the PFM controller DF3421. As the power elements of the LED driver, keys of the type PA610AD are used.
The necessary supply voltages for all nodes of the LG 32LS5610 TV are generated by the EAX64310001 power supply module or its analogs using FAN7930B (PFC), L6599AD (PWM Resonant), ICE3BR4765JZ (Standby) microcircuits, and TK6P60V type power switches.
MainBoard - the main board (motherboard) is an EAX64317403 module using CPU chips: LGE2111A-T8, Nand: NAND01GW3B2CN6E, DDR: H5TQ1G63DFR-H9C, SPI Flash: W25Q80BV and others.
Tuner TDSS-G101D / TDSN-G301D provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T320HVN01.0
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Brightness: 500 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: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
