Yes, if it’s under a year you should be under warranty.
But a couple of things from your last post:
If you disconnect by pulling the USB cord out of your computer first–instead of disconnecting the little plug from the unit–Sansas often give you that white screen. It just happens.
The slow or crashing Refresh means it is chewing on a file it can’t digest. It could be something corrupted, or a big image file someone stuffed into an album folder, or just about anything. If you’re going to return or get rid of the unit anyway, you might as well Format it–which erases all the files you have on it–and see if the problem goes away. Settings/System Settings/Format. It’s the nuclear option but it sometimes fixes things.
Format does leave the firmware on there–it’s not like formatting a computer hard drive. But if you really want to try starting fresh you could format, connect, and reload the latest firmware too. Don’t use the Sansa Updater–just follow the manual instructions. The firmware updates are in the sticky threads.
And you’ve probably already done this, but have you taken out the 16GB card to see if the problem is in the internal memory or in the card? .
You could test the card with h2testw, but that does overwrite everything on the card. http://www.softpedia.com/get/System/System-Miscellaneous/H2testw.shtml
