iMac screen flickering or showing lines? What it means
5 November 2026
Lines or flicker on your iMac screen? A simple screenshot test shows whether the display or the graphics is at fault, and what to do next.
Mac Repair Guides
Practical help with Mac faults, repairs, upgrades and keeping your files safe, from our London workshop.
MacBook on but the screen is black? What to check
5 November 2026
MacBook lights up or the fan runs but the screen stays black? Safe checks to try at home, and how to tell a display fault from a logic board fault.