I bought a sansa c140 refurb from buy.com a month ago. I played a few songs that came on it, then i removed those, and started copying about 800 megs of mp3’s to the device. The device hung up at around 500 megs, but i let it sit for a while just in case.
Then when i pulled the usb cable out to give up, the c140 started cycling through, sandisk, 2 seconds, black screen, 1 second, sandisk, 2 seconds, and on and on forever. I never even got to play any of my music on it. I have to pull the battery to get it to stop. It also does this when i plug it into the usb port with no battery in it.
I tried all the key combo’s and such i could find on this site.
The device is supposed to have a 3 month warranty on it, but i couldn’t get through to sansa support.