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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Tuesday 18 February 2020

REPAIR / SERVICING TV LG 32LG6000

Technical description and composition of the LG 32LG6000 TV, panel type and applicable modules. The composition of the modules.
LG
Model: 32LG6000
Chassis / Version: LD89A / D / F
Panel: LC320WXN (SA) (A1)
T-CON: 6870C-0195A
Inverter (backlight): 6632L-0494A
Power Supply (PSU): LGP32-ATN EAY41970901
PWM Power: L6599D (SC6961), NCP1207A
MOSFET Power: STW20NM60, STP9NK65
MainBoard: EAX39192001 (1.4) EBR44121505
IC MainBoard: CPU: FLI10620H-AA, FLASH: HY27US08121B-TPCB, EEPROM: AT24C16AN, EEPROM: 24LC512; FLi10620H, NTP-3000A, WT61P8
Tuner: TDFV-G135D1
Specifications 52LG5030
LG 32LG6000
General recommendations for repairing TV LCD
Possible malfunctions
- The LG 32LG6000 TV does not turn on and does not show any signs of turning on, does not respond to the control buttons or to the remote control.
With such manifestations, a malfunction is most likely to be detected in the LGP32-ATN power supply module. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches (STW20NM60, STP9NK65) and rectifier diodes of the converters for a short-circuit probability.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback (OOS) stabilization circuits. PWM controllers (PWM) L6599D (SC6961), NCP1207A, if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or inverter. If all the electrolytic capacitors of the filter according to the power supply of the inverter are working, make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
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 they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the EAX39192001 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - CPU: FLI10620H-AA, FLASH: HY27US08121B-TPCB, EEPROM: AT24C16AN, EEPROM: 24LC512; FLi10620H, NTP-3000A, WT61P8 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before replacing the TDFV-G135D1 tuner, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Once again, remind users! Attempts to self-repair the LG 32LG6000 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
Service manual and schematic diagram ---------------------->  LG 32LG6000 Chassis LD89A/D/F.

PSU MANUAL -------------------->  LGP32-ATN Power supply



 The appearance of the MainBoard EAX39192001 is shown in the figure below:
EAX39192001
EAX39192001 can be used in TVs:
LG 42LG6000-ZA (Panel LC420WUF (SA)(A1)), LG 32LG6000 (Panel LC320WXN (SA)(A1)).
The appearance of the power supply
Main features of the device LG 32LG6000:
Installed matrix (LCD panel) LC320WXN (SA) (A1).
The matrix control uses the Timing Controller (T-CON) 6870C-0195A.
An inverter 6632L-0494A is used to power the backlight.
The necessary supply voltages for all nodes of the LG 32LG6000 TV are generated by the LGP32-ATN power supply module or its analogs using L6599D (SC6961), NCP1207A microcircuits and power switches of the STW20NM60, STP9NK65 type.
MainBoard - the main board (motherboard) is an EAX39192001 module using CPU chips: FLI10620H-AA, FLASH: HY27US08121B-TPCB, EEPROM: AT24C16AN, EEPROM: 24LC512; FLi10620H, NTP-3000A, WT61P8 and others.
The TDFV-G135D1 tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320WXN-SAA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1100: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 12 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Posted By: FRANK at 07:37
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