Yeah, I'm in EU too and usually here it is like that you have to give seller possibility to fix the machine, they are not required to just give you a new one if it became faulty! Then usually you have to give them like three attempts to repair it, for example send it to service center for three times and wait for each time that it gets repaired and it does not have to be immediate repair but like couple week at the time (depending on the machine and about how important it is but couple weeks at least is normal). So after you have gone thru that for three times, you may try to ask for a new machine but you must convince them it is the same fault every time. It gets hard it they for some reason interpret the problem a bit different each time. I'm not saying it is impossible to get new one or even refund but it is hard. I've gone thru that with other brand devices few times and I have got even refund or the new machine sometimes but it is very time consuming and not easy.
So you cannot just go and say, hey my screen is flickering once every two weeks for 0,5 second at the time, please give me a new machine right away... It just does not work like that. This is what I'm trying to say.
So maybe your unit has different problem than what usually is with these. But again, you have to go thru that service procedure.