If you can access onboard buttons on the tv, or if you have the LG remote, look for a Source or Input button. Typically you want to be on HDMI1 or TV mode. Beyond that, because these are special hospitality model tvs, they are locked out and have very limited functions with the guest remote, anything else can only be adjusted by the property The LG TV screen will sometimes go black randomly. In order to fix this issue, you need to check for loose cables or connections, check the power source, update the firmware, or change the TV input. On rare occasions, it could be a hardware failure or your TV could be stuck in power saver mode. LG TVs have experienced some issues in the past 1) To connect through OPTICAL cable when there is LG Sound Sync. 2) Try to reconnect the optical cable between TV and Sound Bar. 3) Press “Select Function” button on the Sound Bar remote control and set the Input Mode as “OPTICAL”. 4) After that, use the TV remote control and do as follows. MENU → SOUND → select Sound Out Speaker 1 check cable cord and HDMI devices to TV for a bad connection by wiggling the cable to check if "no signal" changes to a picture2 reset HDMI devices and TV Just upgraded TV to LG 4K Smart 55". Can put PS into safe mode with no issues and change resolutions then boots fine. Leave for 5 mins off then put on No signal! Tried Better HDMI's. Different Ports on TV. Still the same. Is there settings I am missing. Currently set to 1080 on PS with HDR off. My tv kept randomly losing the internet signal and it was driving me insane. Here's a fairly easy fix I found browsing around google. Hope it helps! D6JP.

lg tv no signal problem