DR.J Professional HI-04 Troubleshooting

The projector is not making any sounds.

Ensure that the projector is not muted by checking the volume buttons on the device.

If the device is connected to an earphone, the audio is being transmitted to that rather than the speakers.

After connecting the device, unplug the wires and plug them back in after a few seconds. Also check that the device used for connection has working audio outputs and the right settings.

• Change the audio format and try it again
• Change the port to transmit audio signal

If the speaker has blown out or is faulty, use this speaker replacement guide.

The image is low quality or blurry.

• Adjust the keystone ring to adjust the image display
• Projector size: 16-80 inches
• Projector distance .7M-3M

If the environment is too bright, the image will not be as detailed. Turn off the lights and cover the windows.

• If both fail, update the software or contact customer support

If the projector lamp is broken, follow this guide to replace it.

There is no or a dim image output.

• Clean lens gently
• If lens falls apart

The HDMI port is connected to another device, but there is no output.

• See if you have selected the correct Input Source. The source should match the HDMI where you connected the HDMI cable.
• Check whether the HDMI cable supports HDCP or not.
• Make sure the HDMI cable is not broken. You can try to change the HDMI cable and try again.

If the lens is broken or faulty, follow this guide to replace the lens.

The device is getting too hot.

Check the vents on the back of the device and make sure nothing is obstructing their airflow. If the bottom of the device is hot, this is fine. The DR.J Professional HI-04 has good heat dissipation.

Do not leave the device on for over four hours or when it gets hot. Turn it off until it cools down and then resume usage.

Put the device into a cool and well-ventilated space to avoid dust building up. Avoid warmer rooms as this could lead to overheating. There should also be no heating device near the device.

Look at the fans and see if they are spinning when the device is turned on. The fan being loud is not broken. The HI-04 is a mini projector and needs to cool down quickly. Follow this guide to replace the fan of your project.

The projector will not respond or turn on.

Ensure that the power cord is not loose and fully plugged into the port.

Check to see if the main power switch is flicked to “on.”

Feel the projector to see if the temperature is overheating. The projector has a safety feature that does not allow it to be turned on past certain temperatures so this should not be a factor. If the fan needs to be replaced, follow this guide.

Ensure that the projector lamp is not past its life expectancy. If it is, you may need to replace the lamp.

If you have checked the other components and the projector still won't turn on, it is likely the motherboard. Consider replacing the motherboard with this replacement guide.