Whether the seller is in Russia or the USA, eBay will require him to send you a Return Shipping Label. Then when he gets it back, he is required to refund you.
So ask him for the Return Shipping Label. Do NOT pay for it yourself.
Usually I would encourage a buyer to cooperate with the seller, but this guy lied about his location and about the quality of the machine. Two strikes. Don't allow a third.
If he refuses, go to the Resolution Centre at the bottom of this page and open an Item Not As Described case.
You have already fulfilled the first suggestion in contacting the seller, so go right to the Claim.
If he doesn't somehow provide a method of shipping, you will win the Claim and be refunded.