I try unplugging all connections, remove power and then wait 5 minutes. Apply power and test if the menu blinks or not. If blinking then it's something internal/nonuserserviceable which means get estimates.
We have a problem with our LG 42PC3RV tv.
The tv-screen is blinking!
It seems to me that the screenpicture alternates approximately every 2 seconds between normal lighting (picture-wise) and weaker lighting.
Any suggestions about what we can do?
Thank you for the reply!