Here are instructions to show you how to repair this problem quickly and very easily using sugru.
Just to state the obvious, your cable needs to be in working order before you use sugru to make this strain relief...
Why use sugru ?
1: sugru will bond to the cable and the power block.
2: sugru cures to a flexible silicone rubber which means that it is unlikely to break again.
3: sugru is an electrical insulator.
If you don't already have sugru, you can get it directly from us at sugru.com
Step 1: Getting ready
Open one mini pack (5g) of sugru with a scissors cutting along the dotted lines.
Peel open the mini pack.
Remove the sugru and knead it in your fingers for around ten seconds.
Shape the sugru into a flat sausage roughly 40mm in length.