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InFocus Screenplay 4805 Troubleshooting
Released in May, 2004, the InFocus Screenplay 4805 has not been produced since 2006. It was also marketed as Knoll Systems HD102.
- Dark Bands on the Screen
- Spots on Screen
- No Color is Displayed on Screen
- No Image
- Audio isn’t Working
- Device Turning Off
- No Audio
Dark Bands on the Screen ¶
Dark bands can occur across or on the edge(s) of the projected screen.
Dust in Bulb Compartment ¶
Overtime dust can build up on the projector and can cause an obstruction. To clean this gently use a soft micro-fabric cloth to clear out the dust.
A Collapsed or Damaged Light Tunnel ¶
If there are dark lines running across the screen then there might be a damaged light tunnel you may need to change out the tunnel or make repairs to said damage. To see how to do this, visit InFocus Sp 4805 Light Tunnel Replacement guide.
Spots on Screen ¶
There are spots on the screen when the device is on and running.
Dirty Lens ¶
If you are experiencing spots on your screen, then the odds are the lens needs cleaning. In order to resolve this take a micro-fabric clothe to the lens. Make sure all dust is cleaned off.
Broken Lens ¶
If the lens is clean yet spots are still being displayed, the lens might be broken or chipped. To solve this you have to replace the lens, see InFocus Sp 4805 Lens Replacement guide.
No Color is Displayed on Screen ¶
Device is projecting a black and white image.
Wrong Settings ¶
If the image is black and white the cause might be the setting being wrong. If the color is set on “off,” image will be grey scale. In the User Control, reset the color to be “on.”
Bad Cable Connection ¶
S-video is made of two signals. Luminance which is grey scale and chrominance also known as color. When the chrominance level isn’t retrieved, the image will be black and white. Having the wrong connector may be the result of this problem. To fix this, check to make sure you have the correct connector.
Damaged Color Wheel ¶
A tremendous amount of noise from inside of the device paired with a black and white image on the screen. The color wheel is ultimately damaged; the noise is coming from disc being off balance. Solution to this would be a replacement for the color wheel.
No Image ¶
The projector is turned on and the can be heard running, but no image is displayed.
Bulb Needs Replacing ¶
If the projector is on and running, the bulb might need a replacement (OwnerIQ, Inc., 2017). Shine a flashlight behind the lens, if an image is displayed try replacing the bulb, see InFocus Sp 4805 Bulb Replacement.
Malfunctioning Motherboard ¶
If you have checked the bulb and/or replaced it yet no image is displayed, you might have a malfunctioning motherboard. To fix this problem you have to take the old motherboard out and replace it with a new, functioning one. Visit InFocus Sp 4805 Motherboard Replacement to receive instructions.
Audio isn’t Working ¶
The projector is on and running, but no sound is played.
Loose Cables ¶
If your audio is not working correctly, you might have loose cables. To fix this, make sure all cables are plugged in correctly. Go to the settings menu to ensure the settings on are correct as well.
Malfunctioning Motherboard ¶
If the problem with the audio persists after checking cables and settings, you might have a malfunctioning motherboard. To fix this you have to replace the motherboard with a new one. Visit InFocus Sp 4805 Motherboard Replacement for instructions.
Device Turning Off ¶
The projector will turn off randomly while running.
If your device is turning off randomly it might be overheating. To resolve this, make sure nothing is resting against the back of the projector where the vents are. Turn off the projector and allow it cool for one minute before turning it back on.
Clogged Lamp Housing ¶
If your device is still overheating when its vents are not blocked, the lamp housing might be clogged. To clean the lamp housing, first, remove the lamp housing. Examine the dust filter screens on the lamp housing. If necessary, use a vacuum cleaner set on low power to clean the screens. Be careful not to disturb any internal components when cleaning screens. Make sure you do not use any liquids while cleaning. Replace the lamp housing and lamp door.
No Audio ¶
"No sound or fuzzy sound."
Disconnected HTMI Cabel ¶
Reassure the HDMI cable is connected.
Volume Control ¶
If you made sure the cable is connected, you may have accidentally set the volume setting on "mute." Access your control panel and make sure the volume is on "loud" instead of "mute."
If there is broken fuzzy sound, the speaker could be physically damaged and may be in need of replacement. Visit InFocus Sp 4805 Mono Speaker Replacement for instructions.