My t.v. is 16 months old and when I turn it on, it works fine for about 15 min. then it starts to go in negative mode. More pink colours then anything else. It comes back ok for about 5 min and then goes back in negative again and so on for over an hour until it stays in negative mode totally. You let it sit and cool down for quite a while (5-6 hours) and then you turn it back on and the same thing starts over again.
I have exactly the same problem, my unit has been sent to the service centre 3 times already and they still haven't fixed it. It appears to be a main board issue. I will send it back again for servicing and will NOT take it back unless the main board is replaced.
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