No Image on Projector

If your projector powers on but shows no image from the ICATS system, follow these troubleshooting steps in order.

Symptoms

• No signal or blank screen
• Projector shows "No signal" or "No input" message
• ICATS system appears to be running but no image on projector
• Image appears briefly then disappears

Step 1: Check projector power

• Confirm that the outlet has power (not a switched outlet)
• Verify that the projector power cord is firmly connected at both ends
• Remove the projector lens cap
• Turn on the projector

Step 2: Check HDMI Connection

Confirm that the HDMI cable is:

• Securely connected to Raspberry Pi
• Securely connected to projector
• Not damaged or kinked

Tip: HDMI cables can fail. If possible, test with a known-good HDMI cable to rule out cable issues.

Step 3: Verify Projector Input and Background Color

Ensure the projector is set to the correct HDMI input:

• Check projector remote for "Input" or "Source" button
• Cycle through inputs until you find the correct HDMI port
• Verify you're using HDMI 1, HDMI 2, etc. (some projectors have multiple HDMI ports)
• Check projector menu settings for background color set to black. Should be set to white.

Step 4: Check Power Supply

Verify the ICATS system is receiving adequate power:

• Power supply is connected to Raspberry Pi
• Power supply is connected to wall outlet (not a switched outlet)
• Power supply is correct (5V, minimum 3A)
• Raspberry Pi shows power indicator (LED light)

Important: Using an incorrect power supply can cause display issues. Verify you're using the included power supply or one that meets specifications (5V, 3A minimum).

Step 5: Verify Projector Compatibility

Ensure your projector meets ICATS requirements:

• HDMI input: Required
• Throw ratio: 0.5 to 1.0 (short throw recommended)
• Resolution: 1920x1080 (1080p) recommended.
• Brightness: 4000+ lumens recommended

See the Requirements page for complete specifications.

Step 6: Test with Another Device

To isolate the issue, test your projector with another device:

• Connect to a monitor, TV or another projector via HDMI
• If other device works, issue is not likely with ICATS system or connections
• If other device also doesn't work, issue is likely with ICATS

Step 7: Check ICATS System Status

Verify the ICATS system is running correctly:

• Connect ICATS to a monitor or TV temporarily (if possible)
• Verify system boots and shows ICATS interface
• If system doesn't boot, see Raspberry Pi Won't Boot.

Still Not Working?

Still stuck? If you've tried all steps above and still have no image:

• Check the Top 10 Issues page
• Search Support for your specific issue
• Contact Support with details of what you've tried