I had RMA’d my first Sansa Clip+ because it wouldn’t charge. The new one had the same problem. The player would only power on when it was plugged in. I read on this forum that the battery solder joints were notoriously bad. So I found a youtube video about how to get the case open. Then when I nudged the red wire from the battery with a pick it came off the circuit board right away. Inspection of the solder joint showed that there was hardly any solder but there was a scortched black mark there.
A tech would have laughed at my solder job with my solder wand that is too big but it did the trick and the player now recharges. It is fixed! I just had to resolder the red wire back to the circuit board.
Thanks to the knowledge on this forum and a little soldering my player is working again. Thanks.