Had an issue with the dreaded white screen today. Was unable to resolve it. I went through all the recommended fixes and none worked for me.
Here’s what did work (a slight riff on the standard fixes).
I was already on the latest firmware: 188.8.131.52.
I downloaded the previous firmware release (184.108.40.206 in my case) and booted with that.
I unzipped that firmware onto the root of my sansa fuze. This downgraded it, but still had white screen.
I then plugged it back in to my computer and the Sansa Updater asked if I wanted to upgrade (which I did).
Back to 220.127.116.11 and no more white screen.
Hope this helps others in the same situation.