RMA is returning a broken / defective item for replacement. Since you're out of warranty, you'll probably have to pay a fee. Shouldn't be the full original price though.
Make sure you get info out of them before starting the RMA. Like how much will it cost, do they have a warehouse in your country. Keep in mind, you'll MOST LIKELY have to ship the TV back during the process. So get a big, nice box ready.