I have 2 Magsafe 2 60W charger(T-tip) that I'm interested in repairing rather than buying a new one depending on repair cost. Anyone knows any person/company that does Magsafe 2 charger repair?

The original that came with my MBP has it's cable frayed all over, it's only working because I've taped all over the frayed parts, but even then takes a few tries to register connection and charge.

The other Magsafe 2 charger was bought about 2 years ago, and just suddenly stopped working. Cable was still fine, very minimal fraying, no visible breakage, but it just won't charge.