Question about GPX ML648B MP3 Player
The player shows Z's and the battery does nort charge.
Make sure no other devices are plugged into your computer at the time. Also try restarting the computer with the device still connected.
If operating on a laptop be aware that you may not be receiving enough voltage to your USB port to satisfy the MP3 player. Try disegaging the laptop batter for an hour and then reconnecting it.
Posted on Jun 05, 2010
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Posted on Jan 02, 2017
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Make sure that the USB cable is properly plugged in and use the original cable that came with your player.
Computer in Hibernation mode
Make sure the computer isn't entering hibernation or sleep mode while the device is connected. The computer must be ON in order to charge your player.
USB Port 2.0
Make sure the player is connected to a USB 2.0 port (1.1 occasionally causes charging problems).
USB Port location
Try plugging into different USB ports (i.e. USB port in the back of the computer); occasionally the front USB ports have limited power to charge up the device.
Make sure the battery is fully charged. It takes approximately 3 hours to fully charge the battery.
Depending on what Sansa player you have, make sure it's up to date with the latest Firmware.
AC charger (optional)
AC chargers (sold separately) have a 500-1000 milliamp max output, which provides much better charging ability than a USB port. These accessories are available at SanDisk web site.
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