Samsung D500 Power Problem
 

I've found my old Samsung and decided to charge it up to see what files were on it.

I seem to have a problem where when I plug it in and it makes the charge sound, it displays that it is charging on the screen for around 20 seconds, then goes blank and restarts the charge cycle with the sound again.

Sometimes I can manage to turn the phone on while plugged in but it then switches itself off and repeats the above loop.

Is there any way I can get the files from it?