Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
The failure you are seeing is a sign the printhead needs to be replaced. Its unfortunate that it failed just a few months after your warranty ended.
The problem is, the printhead is expensive. For instance http://www.ebay.com/itm/printhead-for-Epson-EPSON-WF-7620-7620-7610-7611-3640-WF-7111-7621-WF-3641-T1881-/321822451400?hash=item4aee1ce6c8:g:-NkAAOSw9N1VvyEr
And replacing it is a bit difficult as seen here https://www.youtube.com/watch?v=1ZjDaSmGbgo
The printhead is almost as expensive as getting a new identical printer, with a warranty http://amzn.to/2aDVQty
And a similar printer can be purchased for the cost of just the printhead to repair your current printer. Actually, this printer is cheaper then the printhead to repair your current printer http://amzn.to/2a5fK2E
So that is the choice you are faced with, replace the printhead to repair your current printer. Or replace the printer itself.
I posted all the parts and steps above you may need. How you want to proceed is up to you.
I strive to provide great service, and greatly appreciate a 5 star rating clicked and submitted when you are satisfied.. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.