LG Monitor Service Manual, Schematic Diagrams

A catalog with the ability to download for free the circuit diagrams of LG monitors, Service Manual - (LED), CRT, LCD, as well as their individual components - power supplies, modules, individual boards and other circuitry necessary for repairing these models.

Please note that this section contains various types of technical documentation. Even for one monitor model there can be several files. To find out what documentation is posted, go to the description.

• How to download monitor Firmware
• BLOCK DIAGRAM
• DESCRIPTION OF BLOCK DIAGRAM
• WIRING DIAGRAM
• SCHEMATIC DIAGRAM
• DISASSEMBLY
• TROUBLE SHOOTING GUIDE

1. The monitor does not turn on, making adjustments to your plans. You won't be able to work, play, or watch a movie. Pray that it is a lack of voltage - the easiest way to fix the problem is to check the contact between the cord and the monitor. It's sadder if the cable is broken. A much more “painful” explanation of the situation may be a breakdown of the monitor’s power supply, which could not withstand voltage surges. Well, and finally, the problem may lie in the computer when its motherboard is broken or the system unit is simply clogged with dust, causing the video card to overheat.

2. Artifacts on the monitor that make your teeth cramp. These symptoms include stripes on the screen, dots, and the predominance of one shade over the others. It would be better if he didn't turn on!

You could easily avoid trouble by protecting the monitor from contact with liquid, or protecting it from foreign objects. By doing this, you will prevent the monitor matrix from breaking - it is to blame for much of the suffering of monitor owners.

3. Before it can turn on, the monitor goes out. Oooh, you're out of luck - the causes of such malfunction of monitors (both LG and Samsung and ViewSonic) can be swollen capacitors, burnt-out power transistors of the inverter unit, which suffered the same fate, as well as a burnt out or dead monitor backlight lamp and a failed pulse transformer. On particularly “happy” days, two or even more of the above breakdowns may occur simultaneously. In such cases, they say “not fate” and look for service centers where they like comprehensive repairs, and do not do spot repairs.

4. Loss of backlight on the monitor, reduced brightness of the monitor, pink tint. Hmm, a very common monitor malfunction. There is a malfunction of the backlight lamps. This problem ranks second in popularity, but it has already been taken. One of the reasons you should be aware of is poor quality factory soldering (corroded solder).

The cause of such a breakdown may be the “active flux” used in the modern soldering process. In approximately 5% of cases, this error occurs due to a violation of the technical process, which consists in the mandatory removal of active flux after soldering. If this does not happen, the flux will corrode the soldering elements, which will lead to failure of the monitor in 1-2 years.

5. The image can only be viewed when held close to bright light. It is impossible to rule out a burnt-out power supply board with an inverter. Already the first stage of repairing a monitor with your own hands poses an immediate danger to the life of an incompetent technician - diagnosing the inverter, which should be started with, can “respond” with a voltage of more than 1000 Volts

 Take care of the backlight lamps! Know that standard lamps have a certain number of hours (40,000) of hours. Take care of them - reduce the brightness and contrast of the monitor by 20%, extending its service life by 3-4 years!

Don’t be lazy to spend 25 seconds setting up the monitor to automatically turn off after 1-5 minutes. To do this, you need to go into the computer settings and select the required time interval for turning off the monitor. All! Now it will turn off when downloading large files from the Internet, converting videos or listening to music.