Failed booting, yellow led on 3TB mybooklive

hi,
I am having issue with my 3TB mybooklive, stuck on yellow LED during booting process and need several power ON and OFF to make the drive able to continue booting… If I am lucky, took 2 -3 times power On and OFF, but my last booting issue tooks more than 10 times power ON and OFF… Really makes me nervous losing my datas…
At moment the drive in normal operation…
I am really worry if next booting will stuck forever and I will loss my datas…

Any help if there are some solution availabe can be shared or this is the time for RMA?

I would backup my data asap and request an rma