Screen Defect

Screen discoloration

About 8 seconds, full screen, then one question.
White screenBlack screenGrey screenRed screenGreen screenBlue screen
White screen⛶ Full screen
On whitedark spots, pressure marks, lines
On blackbright dots, backlight bleed, glow
On red, green, bluedead or stuck pixels, colour lines
Depends — see test

Discolouration on a screen screen means the colour is wrong in one area, not everywhere: a yellow or brown patch, a blue or purple edge, a dim corner, a pink blotch.

Test it now

Full-screen white shows the patch and its true edges. Grey shows dim areas and burn-in ghosts. Black shows whether the area also glows (backlight) or vanishes (OLED/adhesive).

What it is

Discolouration on a screen screen means the colour is wrong in one area, not everywhere: a yellow or brown patch, a blue or purple edge, a dim corner, a pink blotch. On an LCD it is the backlight films or the optical adhesive: a dented reflector (bright), a slipped diffuser (dim band), yellowed adhesive (warm patch). Whole-screen colour casts are a different problem — see tint.

Can it be fixed?

Heat, pressure and burn-in discolouration: no. Films and adhesive on an LCD: a shop can sometimes reseat the diffuser or re-laminate; usually a panel is quoted. A patch that arrived with no drop or heat is a panel fault and a warranty claim.

What to do

  1. White, grey, black in full screen; photograph on white.
  2. Shape of an app element → burn-in.
  3. Corner or edge after a drop → pressure; not covered, live with it or replace.
  4. No cause and in warranty → claim it as a panel fault.

What a repair costs

United StatesPhone display $80–380; laptop panel $100–300; monitor panel from $150 (often more than a new monitor)
IndiaPhone display ₹2,000–20,000; laptop panel ₹3,000–15,000; monitor panel ₹4,000–10,000 (a new monitor is often the better buy)

Typical ranges from repair-shop and manufacturer price lists, 2026-09-06. Get two quotes; prices vary by model and city.

Warranty

Most makers replace a panel under warranty for physical panel faults that are not accidental damage; pressure marks, cracks and liquid damage are treated as accidental and are not covered. For dead pixels, each brand has a threshold (typically 3–5 bright or 5–8 dark pixels on a laptop; Dell's premium-panel guarantee replaces at one bright pixel).

Related

Black dot on screenA black dot on a screen screen that shows on white and vanishes on black is inside the panel: a cluster of dead pixels (a sharp-edged tiny square), a pressure mark (soft-edged, where something pressed the panel), or dirt under the glass (moves if you press gently, on tablets and monitors only).Depends — see testBlack spot on screenA black spot on a screen screen that shows on white and vanishes on black is inside the panel: a cluster of dead pixels (a sharp-edged tiny square), a pressure mark (soft-edged, where something pressed the panel), or dirt under the glass (moves if you press gently, on tablets and monitors only).Depends — see testDark spot on screenA dark spot on a screen screen that shows on white and vanishes on black is inside the panel: a cluster of dead pixels (a sharp-edged tiny square), a pressure mark (soft-edged, where something pressed the panel), or dirt under the glass (moves if you press gently, on tablets and monitors only).Depends — see testNote 9 screen discolorationDiscolouration on a phone screen means the colour is wrong in one area, not everywhere: a yellow or brown patch, a blue or purple edge, a dim corner, a pink blotch.Depends — see test