If you paid for this with PayPal you can file a dispute with paypal for the amount of the repair if you file within 60 days of original payment to the seller.

If you claim a defective product PayPal will have to credit you for the repair. You can also do this with your own bank if you used a credit card for the purchase. The time with your own bank is longer, 60 days from the date they mailed you the statement showing the original charge.