Kindle fire HD 7" 1st generation, headphone problems

Hi my headphone socket is not working. I have changed out the small socket PCB assembly but on further examination it looks like the ribbon feeding the socket PCB assembly Is damaged, there is a small black spot on the ribbon feeding the socket PCB.

Can the ribbon be changed or is it part of another item?

Looks like there has been a spike and the small black spot maybe a burn mark a cross 2 of the lines.

The onboard speakers still work, it's just the headphone socket that doesn't work

Kindle fire HD 7" 1st generation.