This article offers some troubleshooting tips and procedures for the following monitors:

• AppleVision 1710
• AppleVision 1710AV
• AppleVision 750
• AppleVision 750AV
• AppleVision 850
• AppleVision 850AV
• ColorSync 17-inch Display
• ColorSync 20-inch Display

• Try swapping the monitor and computer power cords.
• Reseat the video cable at the back of the computer. (1)
• Is the computer that the monitor is attached to a 68040- or PowerPC-based computer? (1)
• Be sure the monitor is connected to the built-in video. (4)
• Remove any Macintosh video adapters between the computer and the monitor. (5)
• For AV displays, disconnect the sound cables, reboot and check for a chime from the computer. (6)
• If this is a 6100, 600 or 400 series computer, suspect a dead PRAM battery (dead battery = no video on this series).
• To isolate the failure, try another monitor on this computer, or try this monitor on another computer.
• Consult with an Apple Authorized Service Provider for possible hardware service.

Green power light, Blank screen at startup

• Start with extensions off or boot from CD. If this works, skip to next section.
• Install AppleVision 1.5.x software or Mac OS 8.
• Simultaneously hold down these keys until the Finder loads: Command-Option-A-V.
• If this works, trash the display preferences and recalibrate to ensure there is not a hardware or communication failure with the monitor.
• Consult with an Apple Authorized Service Provider for possible hardware service.

Green power light, Blank screen after extension loads

• - This is not a hardware issue if the monitor initially boots OK and blanks out after the AppleVision extension loads. In that case, it is a software issue.
• Start with extensions off or boot from a CD to bring up the display.
• Trash the display preferences from the Preferences folder and restart.
• Simultaneously hold down these keys until the Finder loads: Command-Option-A-V.
• - or, start with extensions off and pull out the entire Preferences Folder, reboot.
• - or, try a clean install followed by AppleVision 1.5.x as a last resort.

Blurry Video

• Try adjusting convergence by using the Monitors and Sound control panel.
• Reseat the video cable at the back of the computer, plugging it into the built-in video. (1)(4)
• Try the monitor without the ADB connection to isolate ADB-based failures. (2)(3)
• Power up the system and simultaneously hold down these keys until the Finder loads: Command-Option-A-V.
• To isolate the failure, try another monitor on this computer, or try this monitor on another computer.
• Consult with an Apple Authorized Service Provider for possible hardware service.

Orange power light, blank screen

• This indicates the monitor is not finding a proper video signal.
• Reseat the video cable at the back of the computer. (1)
• Is the computer that the monitor is attached to a 68040- or PowerPC-based computer? (1)
• Be sure the monitor is connected to the built-in video. (4)
• Remove any Macintosh video adapters between the computer and the monitor. (5)
• If it is an AV display, disconnect the sound cables, reboot and check for a chime from the computer.
• If this is a 6100, 600 or 400 series computer, suspect a dead PRAM battery (dead battery = no video on this series).
• Consult with an Apple Authorized Service Provider for possible hardware service.

AppleVision 1710 & 1710AV: No video after waking from sleep

With an AppleVision 1710 or 1710AV display connected to a Macintosh, when the Macintosh wakes from sleep mode, the monitor's LEDs may not power on and the monitor may not display any visible raster.

• This intermittent behavior may be corrected by powering the monitor off then back on.

Computer hangs when extension loads

• Start up the computer with the monitor ADB disconnected to be certain that the monitor is the source of the issue.
• Reseat the ADB connection at the back of the computer.
• Move the keyboard and mouse to the other side of the monitor.
• Remove any third party ADB devices. (2)
• Try disconnecting the Apple mouse, then keyboard. (3)
• Reset the PRAM.
• Try a clean install followed by an installation of AppleVision 1.5.x software.
• Power up the system and simultaneously hold down these keys until the Finder loads: Command-Option-A-V.
• Consult with an Apple Authorized Service Provider for possible hardware service.

• Be certain that the keyboard is plugged into the side of the monitor and that the monitor's ADB is connected at the back of the computer.
• Install the most recent version of the AppleVision software.
• Reseat the video cable at the back of the computer. (1)
• Is the computer that the monitor is attached to a 68040- or PowerPC-based computer? (1)
• Be sure the monitor is connected to the built-in video. (4)
• If you are using a Power Macintosh 6100/7100/8100 series off of the AV video card, you must have AppleVision 1.5.3 or higher to retain your resolution settings (OS 8 does not come with 1.5.3 it comes with 1.5.2)
• Remove any Macintosh video adapters between the computer and the monitor. (5)
• Try disconnecting the Apple mouse, then keyboard. (3)
• Try a clean install followed by an installation of AppleVision 1.5.x software.

Not using Mac OS 8 or does not have AppleVision 1.5.3

• Boot the computer with extensions off. (shift key)
• On the left side of the monitor, there are a set of 5 buttons, number them 1-5 from left to right.
• Press button #2 twice
• Press button #5 three times

1. Third party ADB devices include devices such as non-Apple keyboards/mice, joysticks, tablets, splitters, switchboxes, and extender cables.
2. Malfunctioning mice, keyboards or ADB cables will cause the computer to intermittently hang, or cause other erratic ADB behavior.
3. All Macintosh computers come with built-in video except for some PowerBooks and all-in-one computers. On 9000 series systems, built-in video is defined as the Apple-supplied video card.
4. On PowerBooks and HDI-45 machines, suspect the adapter before you suspect the monitor. Try another monitor with the same adapter or another adapter. Monitors should be plugged into the Macintosh side only of a DOS-compatible for troubleshooting, so remove any splitter/adapters in the video chain.
5. No chime usually indicates a failure with the computer. Plug the keyboard into the computer instead of the monitor, or try the reset button on the computer to be sure of where the fault lies.