Thanks everyone for your reply.
As previously stated, i'm just wondering if the same problem has been encountered before by the group. Based on replies, there is only one other occasion in the net that shows a similar case on a Nikon D7000.
https://photo.stackexchange.com/questions/76786/how-can-i-fix-the-dark-corners-on-the-rear-lcd-of-my-nikon-d7000So it seems that although uncommon, it does happen to Nikon cameras.
For those asking details;
Model Nikon D3300 APS-C
Age 6 years (as posted before, this was a gift i gave to my daughter on her 9th birthday
https://www.uglyhedgehog.com/t-661704-1.html)
Shes has been using it since so user error is unlikely.
Lens, Nikon 18-55 kit lens that comes with the camera
& Tamron AF 70-300MM F/4-5.6 DI LD Macro Nikon (full frame lens)
We have decided to send it out for repair but at the moment still looking for the correct service center (We are not in USA). Repaired or not, it still works as only the rear LCD is affected. Photos are normal and have no vignette.
I was wrong to assume that the edge pixels are dead because it was still showing the numbers/data although those parts are also a little bit faded.
I'm also diagnosing the problem in the same situation as everyone because i'm on a different country and we are just communicating through the net.
Again thanks for the answers. I will update any other info we get out of it specially what the repair station would say. Never the less, I'm planning to get her another camera. Probably the D5XXX series if not a D7200.
Thanks everyone for your reply. br br As previous... (