LG 42LA6130 won't turn on

Hi everyone,

I recently purchased the TV mentioned in the subject - it’s not brand new, but it hasn’t been used that much. Last night I used it with HDMI and watched something for a couple of hours, however I’ve turned it on again and while I was watching, the screen went blank but the sound from the TV remained. After I unplugged the HDMI, I turned it off and it never went back On.

It blinks the red light 2 times, which I’ve read on a couple of threads that it might mean old or damaged circuits. Does this mean that if I unplug it from the power cord and wait for some time, turn it On again, will not resolve the issue from happening again? I am very new to this, however my technical skills are on point, but I don’t feel confident enough opening the back case and changing something.

Could you advise on what I should do? Thanks!