MacBook screen flickering

In short: Screen flicker on a MacBook is most often a display cable that's frayed where it bends across the hinge. Less commonly, it's a failing display panel or a graphics chip fault. Cable replacements are quick and inexpensive; panel replacements cost more.

What’s happening

The display cable inside a MacBook flexes every time you open and close the lid. After several years, the cable can wear and start to fail, causing intermittent flicker, dimming, or lines on the screen. Apple recognised this issue on certain MacBook Pro models with what’s commonly called “flexgate”.

If you can reliably trigger the flicker by moving the lid to a specific angle, it’s almost certainly the cable.

If the flicker is present regardless of lid position, it’s more likely a panel fault or a graphics chip issue.

What to do first

1. Open the lid slowly from fully closed and watch for the angle at which the flicker starts. If it changes with the angle, that’s diagnostic for a cable fault.
2. Connect an external display via USB-C or HDMI. If the external display is perfect, the internal panel or cable is at fault, not the GPU. If the external display also flickers, it’s a graphics issue at the logic-board level.

What we do

For cable faults: replace the display cable. Same-day to next-day depending on parts availability.

For panel faults: replace the display assembly. Genuine Apple panels where available; usually 24 to 48 hours.

For graphics-chip faults on older Intel MacBook Pros: assess economical reflow / reballing of the GPU.

How we quote

Three different fix paths at three different price points, so we don’t publish a fixed figure for “screen flickering”. The £75 diagnostic fee covers proper assessment of which fault it is, then we provide a written quote before any work starts. The diagnostic fee is deducted from the repair cost if you proceed.