About a month ago I went into the Apple Store in Udon..reseller...,and bought an HDMI adapter for my MacBook.
They told me to keep the box and the receipt for the warranty....right. Anyway, for some reason I did keep both, and of course the adapter stopped working. So I thought I would try to see if they would honor the warranty. Much to my surprise they gave me a new adapter without any hassle. A first in Thailand for me and a very pleasant surprise.