Why sometimes usb cables(or other cables) have to be put in unusual position for them to work?

Question

If you can try to ELI7;

You know, an usb cable works perfectly then, the next day you have to play with it, put the cord upwards, put the cord downwards, now it works only at a specific 63 degrees angle.

I associate this with the copper wearing out, or burning… but is that really it?

In: Technology

Answer 1

When you flex copper back and forth it work hardens. As it get harder it also becomes more brittle to the point that it breaks. Your USB cable has a break in it and you have to hold it a certain way for the broken wires to touch. This is also why one ear bud stops working.