Continued use can cause expensive repairs.
2. Check http://www.samsung.com/us/capacitorsettlement/
I can't find your model at Samsung.com so I wonder if this is not a US model and would not be on that list.
The symptom is similar but a tech would have to inspect for the issue.
My samsung un46d6400ufxza tv, logo cycles on and off when tv is turned on.