13-inch MacBook Air (2018 - 2020) Diagnostic Share 13-inch MacBook Air (2018 - 2020) Repair Diagnose problems and report back. ✓ Tested by Apple Certified Technicians. ✓ We will investigate the issue with the device. ✓ If any parts are needed, we will advise you of the costs before we proceed. £129.00 13-inch MacBook Air (2018 - 2020) Diagnostic quantity Add to basket