Caution!: Never connect or disconnect cables while your projector or devices are powered on. Cables can carry a low DC voltage and could cause a short or power surge which could damage electronic components.
1. The easiest way to re-negotiate the input signal handshake is to power cycle your devices.
- Power all devices off.
- Turn on projector.
- Ensure all Cables, Splitters, Switches, Extenders are connected if they are being used and turn them on.
- Turn on input device.
- Wait for the input device and projector to synchronize the input signal handshake / timing which may take 10 seconds or longer.
2. Dropped signals can be caused by cables if the pins are damaged or the cable does not conform to the correct specifications.
- Video flickering / dropping of signal can indicate a faulty cable. Change the cable to test if this is the case.
- Try using gold plated connector cables for best possible signal transfer on connections.
- Use the shortest possible cable between the devices.
3. Determine if there is a compatibility issue between devices.
- Splitters, switches, extenders and network devices may not support all frequencies or resolutions. For example, older splitters, switches, extenders and network devices may have been on the market before higher resolutions were introduced and therefore, be unable to handle the newer signals.
- Check to verify whether the source device and projector are HDCP compatible.
- Verify that the source device is set to output a digital signal. Many DVD players with DVI output need specific settings adjusted to output via the DVI port.
- Check to see that all the devices are using the latest firmware updates. If necessary, update the firmware or replace the device with a newer model.
4. Determine if there is a problem with devices connected between the source device and the projector.
- Connect the input device directly to the projector eliminating splitters, switches, extenders and network devices.
- Reconnect splitters, switches, extenders and network devices, one at a time, to determine if one of the devices is causing the problem.
5. Check for voltage spikes and drops in the power being supplied to the devices.
- Unstable voltage can cause input signals to be interrupted and/or dropped if devices are powered on for long periods without the input signal being refreshed.
- Signal drops can occur when the high power device such as an air-conditioning unit or heater switches on and is connected to the same circuit, electrical wall socket or electrical circuit-breaker that your devices are on.
- Voltage spikes and drops can cause damage your devices.
- If a laptop is being used as the source device, make sure the power supply is being used. Some laptops will disable non essential devices while on battery power.
6. Try switching to a different input source.
- Switch to VGA or HDMI port
- Try using a different computer or video device.
- Ensure the projector is set to the correct display mode.