NO SIGNAL
HDMI 1
No Signal Screen
A retro "No Signal" display with color bars or a floating message box, with your own custom text.
Quick answer
What is the No Signal Screen?
A no signal screen shows the familiar TV message that appears when a television or monitor gets no input from its HDMI or cable source. Shown in fullscreen with color bars and a drifting message box, it makes a convincing prank, film prop or placeholder for a spare display.
Key features
- Classic color bars or plain blue background
- Drifting "No Signal" box like a real TV
- Optional 1 kHz test tone and custom input name
- Fullscreen with hidden cursor
Why use it
- Easy, harmless prank
- Prop for films, escape rooms and sets
- Works on smart TVs through the browser
Built and tested by Whitson Rao
About the No Signal Screen
Show a realistic “No Signal” message with SMPTE color bars or a bouncing input badge, just like a TV or monitor with nothing plugged in.
What a no-signal screen means
TVs and monitors show 'No Signal' when the selected input is not receiving a video signal, usually because the source is off, asleep or connected to a different input. Older sets showed color bars, which broadcasters used to calibrate equipment, or a floating message box that moved to avoid burn-in.
This page recreates both styles so you can use them as props, transitions or placeholders, with your own text and input name.
Fixing a real no-signal message
Check that the source device is on and awake, that the cable is firmly seated at both ends, and that the TV or monitor is set to the same input you plugged into. Try another cable or port, and for laptops press the display-switch shortcut. If the screen itself seems faulty, the Monitor Test helps check the panel once a picture is back.
How to use the No Signal Screen
Choose a style: classic color bars, a black screen with a bouncing message, or a blue input screen.
Edit the message and input name, such as “HDMI 1”.
Optionally enable the 1 kHz test tone — it starts muted and only plays after you click.
Press F or click Fullscreen to fill your display, and press Esc to exit.
Common uses
Film and photo props
Dress a set with a believable unplugged TV.
Stream intermissions
Use a no-signal card while you take a break on stream.
Retro aesthetic
Add a nostalgic broadcast vibe to videos or presentations.
Harmless pranks
Make a screen look disconnected — always reveal it afterwards.
Frequently asked questions
What are the colored bars called?
They are SMPTE color bars, a broadcast test pattern used to calibrate color and brightness on televisions and video equipment.
Will this make my monitor actually lose signal?
No. It is a webpage that only looks like a no-signal screen. Your display keeps working normally.
How do I get out of it?
Press Esc, or move the mouse and click the close button in the corner.