Teletext-Tools 763 — Red Screen

PURE RED FULLSCREEN

P763

Press START for a totally red screen. No text. No UI.

Exit: press ESC (or tap/click screen).

CONTROLS

763

START RED SCREEN

START shows pure red inside the screen.
FULLSCREEN attempts true fullscreen red.
Tip: use red to spot stuck pixels and tint issues.

STATUS

READY

ESC exits fullscreen (browser) and returns to tool.
Tap the red screen to exit quickly.
Use with: 764 green + 765 blue.

Quick jump: 762 White Screen • 764 Green Screen • 767 Dead Pixel Test

1) Press START (pure red appears)

2) Optional: press FULLSCREEN first

3) Exit: ESC or tap/click screen

Stuck pixels: pixels that won’t change colour

Tint: patches that look orange/pink

Uniformity: brightness consistency across the panel

Photosensitive users: avoid rapid switching.

Heat: phones can warm up at high brightness.

OLED: don’t leave static bright screens for hours.

Is it true red? yes — overlay is #ff0000.

Looks darker? your brightness or display limits.

Seeing banding? try 769 banding test.

Dead pixels? confirm on 764 and 765.

Fullscreen blocked? browser policy.

Try again after a direct tap, or use START only.

Exit: ESC (desktop) or tap (mobile).

Best practice: cycle red → green → blue to confirm.

If a pixel stays bright: it may be stuck.

Solid red is one of the quickest ways to spot “stuck” subpixels.

Combine with green and blue for a simple RGB check.

Exit instantly with ESC (or tap), and avoid long max-brightness runs.

761 Black • 762 White • 764 Green • 765 Blue

767 Dead Pixel Test • 766 Gradient Test

red screen • fullscreen red • stuck pixel test

dead pixel checker • rgb display test • screen uniformity