TV screen problems
Black spots, grey screen, lines and a washed-out picture on a TV — what each one is, whether a board repair fixes it, and when a new TV is the better buy.
Open this page in the TV's own browser, or cast it from your phone, so the colours fill the TV 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
TV grey screenA TV showing a grey screen — evenly grey, with or without sound — is usually no picture signal reaching the panel: the source or the HDMI cable, the TV's main board, or the T-con board that drives the panel.Depends — see testBlack spot on TV screenA black spot on a TV 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 test
Warranty: dead pixel policy by brand.
Not sure which one you have? Open the full-screen test, step through white, black and grey, and match what you see: a mark on every colour is in the panel; a mark only on light colours is a shadow on the backlight; a bright spot only on dark colours is a loose backlight reflector; lines that change when you tilt the lid are the cable.