A:Answer Thank you for your interest in the LG StanbyME 27" Rollable Smart Touch Screen with 3hr Battery (27ART10AKPL) model. If your LG 27ART10AKPL TV produces sound but no picture, you can perform an image test to troubleshoot the issue. Here are some steps to consider:
1. Check the TV by performing an image test. If you see nothing on the TV screen, try turning off the TV using the remote, then turn off the power switch on the back of the set-top box, wait for 5 seconds, and turn it on again
2. If the above step does not resolve the issue, you can try unplugging the TV from the wall socket and keeping the power button pressed for 30 seconds, then wait a minute before plugging the TV back in
3. If the problem persists, you can explore settings related to sound and audio output, as well as consider performing a factory reset as a last resort
You can download its owner's manual through this link for more information: https://www.lg.com/us/support/product/lg-27ART10AKPL.AUS. ^Cris