Display line failures present differently depending on the engineering generation of the machine. The table below traces hardware vulnerabilities, common symptoms, and historical service outcomes across major MacBook releases.
| MacBook Generation | Primary Failure Profile | Hardware Root Cause | Service Program Status |
|---|---|---|---|
| 2016, 2017 MacBook Pro (13" & 15") | Stage light effect at bottom edge; total black screen past 45 degrees. | Ultra-short display flex cable tearing under normal hinge extension. | Official Apple 13-inch Backlight Program (Expired). |
| 2018, 2020 Intel MacBook Air & Pro | Horizontal black lines, interlaced image ghosting, persistent frame shudder. | Heat exhaustion near lower bezel causing T-con board malfunction. | Standard warranty terms only; no dedicated recall. |
| 2020, 2022 M1 / M2 MacBook Air | Single or paired vertical colored lines (magenta, cyan, or white). | Chip-on-glass (COG) bond separation from localized torque or hinge debris. | Handled on case-by-case basis; accidental damage cited if cracked. |
| 2021, 2026 Liquid Retina XDR Pro (14" & 16") | Segmented horizontal scan lines; partial refresh rate failure (ProMotion). | Mini-LED array driver fault or high-density ribbon micro-fracture. | Covered under base warranty or extended service plans. |
