Technical description and composition of the LG 32LG5000-ZA TV, panel type and applicable modules. The composition of the modules.LG
Model: 32LG5000-ZA
Chassis / Version: EBR43581202
Panel: V315B1-C07
T-CON: V315B1-C07, AS15-G, CM2681A-KQ, MAXIM 8728E, EM636165TS-7G, 24LC128
Inverter (backlight): I315B1-16A
PWM Inverter: OZ964GN, BA1032AF,
MOSFET Inverter: AO4614
Trans Inverter: 4013L 074596 KG-4
Power Supply (PSU): EAY4050440 LGP32-08H EAX40097901 / 14
PWM Power: 1207A, SG6961SZ (PFC), NCP1396AD
MainBoard: EAX40150702 EBR43581202
IC MainBoard: LGE7363C-LF, HYB25DC256163CE-4, 25X32VSIG, 24c512, NTP-3000A, TMDS351, MAX3232C
Tuner: EBL42367001 TDFV-G135D
Control: MKJ40653802
Specifications 52LG5030
LG 32LG5000-ZA
General recommendations for repairing TV LCD
Repair and diagnostics of any electronic device, in particular LG with the EBR43581202 chassis, it is advisable to start with a careful external examination of internal and external 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. Swollen electrolytic or cermet capacitors, carbonized resistors, ring cracks in the soldering of the outputs of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
Failures of the power module LGP32-08H EAX40097901 / 14 can be expressed in different ways, for example, LG 32LG5000-ZA does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. 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 for the possibility of an avalanche or thermal breakdown.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller 1207A, SG6961SZ, NCP1396AG , which can be checked only by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
In cases where the LG 32LG5000-ZA TV has lost its image, and the sound is there and all other functions are operational, there is a possibility of an inverter (converter for powering the backlight) malfunction. 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. If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after their completion, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
The motherboard EBR43581202 must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary. Board repair and replacement of LGE7363C-LF, HYB25DC256163CE-4, 25X32VSIG, 24c512, NTP-3000A, TMDS351, MAX3232C, Tuner EBL42367001 TDFV-G135D microchips are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
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.
One of the typical defects of the LG 32LG5000-ZA TV can occur in the V315B1-C07 panel.
External manifestations: color distortion in the image as a negative in the image, light tones predominate. Typically, in such cases, the AS15-G gamma corrector is faulty. Another indicator of its malfunction is an excessively strong heating, which in practice allows you to do without measuring the voltage gradations of gray.
In most cases, replacing the AS15-G solves the problem.
It should be remembered that similar symptoms can cause faults in the column drivers of the panel, which is usually indicated by interference in the form of even vertical stripes on the screen. Then, after replacing the AS15-G, the situation does not change. Drivers are in loops and cannot be replaced. In this case, it is necessary to replace the glass panel.
SCHEMATIC MANUAL ------------------------------------> LG 32LG5000 32LG5000-ZA, 32LG5010, 32LG5010-ZD, 32LG5020 32LG5020-ZB, 32LG5030, 32LG5030-ZE Chassis LD84A.
PSU SCHEMATIC -------------------------------------------> LGP32-08H.
INVERTERE SCHEMATIC I315B1-16A -------------> I315B1-16A Inverter Schematic
The appearance of the MainBoard EAX40150702 is shown in the figure below:EAX40150702
EAX40150702 can be used in TVs:
LG 32LG5000-ZA (Panel V315B1-C07), LG 42LG3000 (Panel LC420WXN (SA)(A1)), LG 32LG3000 (Panel LK315T3LZ94), LG 42LG5000 (Panel T420HW01 V.2).
PSU Advanced
The 32LG5000-ZA model uses the LGP32-08H power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, this is a step-up converter based on the PWM controller SG6961SZ, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes, when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the device LG 32LG5000-ZA:
Installed matrix (LCD panel) V315B1-C07.
The matrix control uses the Timing Controller (T-CON) V315B1-C07.
To power the backlight, an inverter I315B1-16A is used, it is controlled by the PWM controller OZ964GN, BA1032AF,. A transformer 4013L 074596 KG-4 is installed in the inverter converter. As power elements of the inverter, keys of the type AO4614 are used.
The necessary supply voltages for all nodes of the LG 32LG5000-ZA TV are generated by the EAY4050440 power module or its analogs using 1207A, SG6961SZ (PFC), NCP1396AD microcircuits.
MainBoard - the main board (motherboard) is an EAX40150702 module using LGE7363C-LF, HYB25DC256163CE-4, 25X32VSIG, 24c512, NTP-3000A, TMDS351, MAX3232C, and others microcircuits.
The tuner EBL42367001 TDFV-G135D provides the reception of television programs and tuning to channels.
Information from an alternative source:
LG 32LG5000-ZA
Panel Type (Matrix): V315B1-C07,
Motherboard: EBR43581202, Processor LGE7363C-LF, SDRAM HYB25DC256163CE-4 x2, FLASH 25X32VSIG x2, EEPROM 24c512, Audio NTP-3000A, HDMI datasheet on TMDS351, MAX3232C, Tuner: EBL42367001 TDFV
T-con: V315B1-C07, AS15-G, CM2681A-KQ, MAXIM 8728E, EM636165TS-7G x2, 24LC128,
Invertor: I315B1-16A, OZ964GN, BA1032AF x2, AO4614 x8
PSU: LGP32-08H EAX40097901 / 14, 1207A, SG6961SZ, NCP1396AG
Remote control: MKJ40653802 Schematic I315B1-16A