3DMakerWorld, Inc. is listed as the seller

yes, same sd card is being used...

fan0-fan2 headers not supplying power to fans, always on fan headers working fine. tried both console commands and web interface and no go. double checked jumpers and still no go. swapped out board with a backup and everything works fine. i purchased this board off amazon and after starting the refund process I got a msg that said I needed to post on here but not sure where...

amazon only gave me the option for a refund, but would much rather get a working board. if someone could please either tell me where I can find instructions on the warranty process, or what I need to do to make this happen.

Thanks