I have a ns-102b mp3 player that wont charge or turn on.. even if i use a usb port, it still wont charge or turn on. how do i fix it?

Some older computers that have USB ports that limit the output to 5V @ .5 amp current. Depending on your MP3 player, it may not be sufficient to charge the player. This was the spec back then. Since then, new USB specs call for 5V @ 1.0 amp current - a two fold increase in current.

You may have better luck connecting to a powered USB hub instead. If you're only looking to charge the MP3 player, you don't even need to connect it to the computer. The powered hub gets powered by connecting the ac adapter / power supply to a wall outlet - instead from of the computer's power supply via mother board.

The above assumes there is a good, rechargeable battery; a functioning charger & USB port in the MP3 player and of course, a working USB cable. If any of the above is faulty, you'll never get the MP3 Player to accept a charge. You should try different computers, cables and ports if possible.

Good luck!

The most common cause is a flat battery. There is a trick to charging the battery in these small mp3 players. It wont charge if it is turned on, and it won't charges if it's turned off. Here what to do...
1. plug the payer into your USB port. or wall charger
2. switch thje palyer on using the mechanical switch (on the side)
3. turn it off by either holding down the play button, or selecting "System" from the menu
4. The screen will go black and the battery will begin charging.

My new Insignia NS-8V24 player, that I've had for 3-4 months, won't charge. I've used charging USB lines I have to charge it on every computer possible, but it won't charge. It would turn off and on for a few seconds and turn off again. I do not know what to do, because I cannot download music into the Mp3 player if it cannot be turned on. What should I do?

I have a similar problem from time to time. I have to hold to slide for what seems like a long time and eventually it comes on.

try charging it for 2-3 hours and then try if not working after that maybe the swich is not working

is the battery in correctly and is the usb cable fully inserted on the computer end if your going throug a usb multi-port hub make sure its not over loaded with too many devices
if no hub try a different usb port or a different cable

Make sure player is on, use another USB port, wait at least 30 seconds.

Does the Player Charge when connected to the USB ? If so then you have a "Live" USB connection so you may need to resolve a USB driver issue.

Make sure your OS has the latest updates: ie Service Pack 3

Try taking out the battery and see of that helps.

If not, straighten a paperclip and insert into the RESET hole for 10 seconds (should feel a light click).

Make sure there's no debris in your USB port on the player.

This can be a problem with your USB capabilities in your computer.

If you are using your front USB ports, it is possible they are underpowered. Try switching to the rear USB ports.

You can also try a self-powered USB Hub to improve performance or purchase a USB 2.0 card for your system.

It could be something as simple as a bad USB cable. That would be the cheapest place to start...next to trying the rear USB ports.

I don't know if this applies to the Sansa for sure or not but many MP3 devices and smartphones if completely dischard will not charge back up via usb to computer, you have to use a wall jack charger. This is true for the Motorola Q and other smart phones I know for a fact, also the Apple Ipod Gen 5 has had some issues with charging after complete discharge of the battery. Try a wall charger if possible. I don't know much about the sansas.