沙特阿拉伯采购需求：液晶显示器、液晶终端、LED电视、商用显示器、医疗显示器、医疗液晶终端

I bought a monitor 6 months ago that has screen burn-in and isn't performing as promised. Amazon says it's covered under your 3-year warranty. Can you guide me on the return or replacement process? I have all the original packaging and receipts.