vertical lines after only 20 hours using it LG 55LA9650 - LG frustrating product

Mon problème

i have true frustration i have 55LA9560 LG SCREEN i bout it 3 years ago never opened tell last month, this morning i just turn it on to discover that there is 3 lines increased to 5 lines vertically not horizontal the screen no reason why i swear i almost cried

when i tried to touch the HDMI cable some lines disappear and then pop up again then i tried again nothing happened i wish i can find a saloution but not changing the screen its almost the same price of the full tv

Ma solution

waiting the repair

Mon conseil

no action yet