Hi gubar, sorry for my late reply.
Sad to read that your new television has the same problems. It was the same for me, I have my third device now. Here in germany, we have a 12-month "Gewährleistung" where Panasonic has to prove that the problem is not Panasonic's fault but was 'created by customer mistakes'. So within that 12 month, I can call the service for free whenever I have problems. I have done this and they again replaced my Mainboard, of course this did not fix the problem
.
No, "sadley, they cannot reproduce the issue".
I am also going to get my money back, in germany this is possible by law after the second failed repair attempt within the 12-month "Gewährleistung", so I can relax and wait for the new LZ models.
What I am going to do now is to contact Panasonic on their social media platforms (Facebook etc.), usally, companies tend to react nicer if you blame them in public
. I have tried to speak to Panasonic privatley three or four times, it did not work out. Parallel to that I will write some german Home-Theatre Magazines if they could help me to get Panasonic to look at the issue. It would be a great first step if Panasonic agrees that there is a bug.
Greetings!