MY SANSA CLIP TURNIN OFF WHEN ON ed ..SHOWIN BATTERY LOW

The last post didn’t resolve my problem.

When I plug the clip into the power adaptor it says

Battery Low followed a couple of seconds later  by Shut Off - then nothing.  Same result trying to power via a laptop USB port

Interestingly, the blue light on the power adaptor goes off at this point too.

Any ideas?

Cheers