LG Stereo System, Speaker System Service, Repair Manual

LG Stereo System, Portable Speakers, Speaker System, Error when connecting to a smartphone, when you turn on the speaker nothing happens, the speaker got wet and stopped working, it turns on but does not work, 

ELECTRICAL TROUBLESHOOTING GUIDE, WAVEFORMS OF MAJOR CHECK POINT, POWER SUPPLY ON SMPS BOARD, WIRING DIAGRAM, BLOCK DIAGRAM, CIRCUIT VOLTAGE CHART,  CAPACITOR VOLTAGE, CIRCUIT BOARD DIAGRAMS, MAIN P.C.BOARD DIAGRAM

• Mini Hi-Fi System
• Micro Hi-Fi System
• Mini Hi-Fi Audio
• Super Power Mini Hi-Fi System
• Hi-Fi System
• DVD Micro Hi-Fi System
• KARAOKE DVD Mini Hi-Fi System
• Wireless Multi-room Sound Bar
• Smart HI-FI Audio
• 3CD Changer HI-FI System
• Micro Component System
• Wireless Multi-room Audio
• Sound Plate

LG Stereo System Service Manuals. Wiring Diagram>>

In order to determine why the LG FFH music center does not turn on, it is necessary to establish the reason. Many malfunctions arise due to careless handling of the device, but there are also those that are associated with the aging of parts and assemblies of the center itself, or with oxidation of contacts, the presence of a layer of dust and other reasons. The most frequently cited reasons are why the music center does not turn on:

• Mechanical damage to internal components due to falls, impacts or strong shaking of the music center.
• Wear of parts after a long service life.
• Using low quality media.
• Failure of the power supply or boards due to voltage surges.
• Viruses on media.

You can fix something yourself, but if you need to disassemble the music center to fix it, it is better to contact specialists from the LG service center.

First of all, you need to make sure that there are no kinks on the power cord anywhere, that it is not melted and that there is no burning smell from the power supply. If you smell a strong burning smell from the power supply and the LG music center does not turn on, then most likely the fuse has blown. You can completely replace the cord with the power supply. But in reality it will be enough to replace the fuse inside the power supply.

Another malfunction that you may encounter will manifest itself as follows: no sound in any operating mode, or a hoarse playback sound in any mode, or no sound in one of the speakers, or the sound disappears from time to time. If you notice any of the above, you should check your speakers. Most likely, one LG speaker or both failed at once. You can correct the situation by connecting speakers from other devices. It is better to leave disassembly and repair to professionals.

The most common malfunction of music centers is deterioration in data readability or complete failure to read data in an audio CD player. The cause may be due to a dirty laser head or due to aging and resulting loss of clarity of the lens. This malfunction manifests itself as follows: the LG music center first tries to read the CD tracks for a long time, and eventually stops. Sometimes it manages to recognize the disc and start playing, but there are frequent glitches during the sound.