HI nIKITA2471.
If its a faulty drive try this.
Step
Remove the top of the unit, using the appropriate-sized Philips screwdriver. Consult the manufacturer's warranty details to determine if this will void it.
Step
Apply power to the unit, and eject the tray. Lay two paper towels over the internals of the unit, with the paper resting on the sides of the chassis. Power will remain on during this procedure.
Step
Spray three short bursts of WD-40 (or similar lubricant) under the plastic disc that grabs the DVD and pulls it into the motor and drive shaft (it will be a quarter-sized black or gray disc that is attached to the spindle motor). Let settle for a few seconds.
Step
Place a commercial DVD into the tray, and allow it to spin up. If it does not, your player may require professional service.
Step
Gently clean up excess lubricant sling (throw off that occurs when the motor spins up) with paper towels and cotton swabs, paying special attention to the laser assembly.
Step
Re-attach the top of the unit.
do not let any spray get on to the little lens that reads the disc.
or you could try just buying a lens cleaning disc and see if that works first.
Full 'make model (what it is)' in all questions please, first 3 words.
Capacitors can split or bulge, resistors can burn,, the transformer can fail internally..
Take it for repair unless you have the thousands of dollars of test equipment and have do the 2 year electronic course.
A communication error has occurred between the outdoor and indoor units. Faulty wiring or a malfunctioning control unit may be responsible. Contact LG customer service for assistance. Their number is 1 800 243 0000.
You will need to connect a single HDMI cable from your sound bar to the HDMI ARC or the HDMI eARC port on the Roku T.Make sure that both of the devices are both turned on.When your TV detects the sound bar,it will then automatically initiate the setting up process. Lastly follow the easy on screen instructions to finish setting up the connection.
If your LG 55UM7300PUA is not powering on, there are a few things you can try to troubleshoot the issue. 1. Check the power cord and make sure it is securely connected to the TV and to the wall outlet. 2. Check the wall outlet to make sure it is working properly. Try plugging in a different device to the outlet to make sure it is providing power. 3. Check the power button