LG Home theater system Parts — Browse All Models

Troubleshooting your LG home theater system when it won't power up

• If you're using the remote control to attempt to power up the home theater system, try using the power button on the amplifier cabinet to power it up.
• If the home theater system won't power up when you press the power button on, check the power cord. Plug the home theater system power cord securely into the electrical wall outlet if the outlet cord plug is loose.
• If the home theater system power cord is properly plugged into the electrical wall outlet, check the electrical outlet for power by plugging a different item into the wall outlet. If the wall outlet is dead, reset the house circuit breaker for the wall outlet. Have an electrician repair the wall outlet if it remains dead after resetting the house circuit breaker.
• If you have the home theater system plugged into a surge protector, check for a tripped circuit breaker on the surge protector. Reset the surge protector circuit breaker if it's tripped.
• If the home theater system is getting power through the power cord but won't power up, you may need to replace the power supply board in the amplifier.

Maintenance tips for your LG home theater system

• Unplug the home theater system's power cord from the electrical wall outlet before performing any cleaning and maintenance on the system.
• Remove the amplifier's cabinet cover. Spray canned air through all ventilation slots of the cabinet to clear out dust and debris that can interfere with airflow through the cabinet.
• Carefully blow dust and debris from internal components in the amplifier.
• Use electrical contact cleaner to remove corrosion and deposits from all jacks, plugs and switches. Allow the cleaner to dry completely before reassembling the amplifier.
• Wipe down all external amplifier cabinet surfaces using a damp micro-fiber cloth. Dry the surfaces with a lint-free cloth.
• Reassemble the amplifier and plug the power cord back into the electrical wall outlet.