REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Thursday 20 February 2020

REPAIR / SERVICING TV LG 32LT360C

Technical description and composition of the LG 32LT360C TV, panel type and applicable modules. The composition of the modules.
LG LED
Model: 32LT360C
Chassis / Version: LD2AC
Panel: LC320EXN
T-CON: LC320EXN-SEA1-k31 6870C-0414A; TL2345M
LED driver (backlight): PPW-LE32GX-0 (A) Rev0.4 6917L-0097A
PWM LED driver: BD9395EFV
Power Supply (PSU): LGP37C-12HPC
PWM Power: P1028P65, L6599AD (PWM Resonant)
MainBoard: EAX64651403 (1.0)
IC MainBoard: LGE2111A-T8, NTP-7500L, 25L8006E
Tuner: TDSS-G101D (EBL61060001)
Control: AKB73655802
Specifications 32LT360C
LG 32LT360C
General repair guidelines for TV LCD LED
A malfunction of the power supply is often manifested corny - the TV does not turn on, does not make any sounds, does not light up and does not blink with any indicators. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is cut off in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
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 32LT360C TV does not have an image, but there is sound, a malfunction in the backlight circuits of the LC320EXN LED panel is likely.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
Repair or diagnostics of the EAX64651403 (1.0) motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update the software (software).
In some cases, it is necessary to check or replace (if necessary) the elements of the MB board (SSB) - LGE2111A-T8, NTP-7500L, 25L8006E. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
Tuner malfunction TDSS-G101D (EBL61060001) is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Owners and users of the LG 32LT360C 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 MANUAL -----------------------> LG CHASSIS LD2AC; MODEL : 32LT360C, 32LT360C-ZA



 The appearance of the MainBoard EAX64651403 is shown in the figure below:
EAX64651403
The appearance of the power supply
Main features of the device LG 32LT360C:
Installed matrix (LED-panel) LC320EXN.
The matrix control uses the Timing Controller (T-CON) LC320EXN-SEA1-k31.
The LED driver PPW-LE32GX-0 (A) is used to power the backlight LEDs, it is controlled by the BD9395EFV PWM controller.
The necessary supply voltages for all nodes of the LG 32LT360C TV are generated by the LGP37C-12HPC power supply module or its analogs using P1028P65, L6599AD (PWM Resonant) microcircuits.
MainBoard - the main board (motherboard) is an EAX64651403 module, using LGE2111A-T8, NTP-7500L, 25L8006E and other chips.
Tuner TDSS-G101D (EBL61060001) provides the reception of television programs and tuning to channels.
Information from an alternative source:
LG 32LT360C Chassis LD2AC
Panel Type (Matrix): LC320EXN
Motherboard: EAX64651 403 (1.0), LGE2111A-T8, NTP-7500L, 25L8006E, Tuner: TDSS-G101D (EBL61060001)
T-con: LC320EXN-SEA1-k31 6870C-0414A, TL2345M
LED Driver: PPW-LE32GX-0 (A) Rev0.4 6917L-0097A, BD9395EFV
PSU: LGP37C-12HPC, P1028P65, L6599AD
Remote control: AKB73655802,
Additional technical information about the panel:
Brand: LG Display
Model: LC320EXN-SDP1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 10%), Hard coating (2H)
Brightness: 380 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Posted By: FRANK at 07:50
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