There may be something wrong with your unit’s controller board, causing horizontal lines to appear on-screen. Tekzilla on YouTube has a great video demonstrating the dos and don’ts of replacing a projector lamp, using the Optoma HD20 projector as an example. Once you’ve replaced the lamp unit, turn your projector on, allow it to warm up, and check the results. Projector lamps contain mercury, which can be fatal if inhaled. Warning: Should you drop the lamp unit or find that it’s cracked, immediately leave your home and call health services. Whenever replacing the lamp unit, always unplug the projector and allow it to cool before opening the lamp compartment. Most projector brands will sell lamp replacements on their official websites. If the projector’s lamp unit is replaceable, order the correct lamp replacement online. If your projector’s lamp is not replaceable and you’ve tried all of the above solutions, consider calling customer support and taking your projector to a technician.
#Jumping line moving across monitor how to#
Watch the video below demonstrating how to factory reset a projector, using a Nebula projector as an example.Ī faulty or dying projector bulb can cause image problems.įirst, check your user manual to see if your projector has a replaceable lamp unit. Once it’s been factory reset, set up your projector and see if the horizontal lines have been cleared. Some projectors also have a Reset pin-hole which must be pressed with a long, thin, needle. Usually, you can factory reset a projector by going to its Settings, then to About.Ĭlick on Reset or Recovery, and confirm that you’d like to factory reset your device by clicking Yes or OK. Note that every projector must be factory reset differently, so consult your user manual to see specific instructions for your projector brand. However, it’s an easy way to see if the lines are a result of the projector’s settings or the external hardware. This will erase any custom settings, delete any apps you’ve downloaded, and log you out of all of your accounts.
Watch the video below demonstrating how to change your projector’s resolution to fix horizontal lines on-screen.įactory resetting your projector could help restore the correct picture settings and eliminate those dreaded horizontal lines. You can also set it to “Auto” and see if this helps. This will require a bit of experimenting, so try out each resolution to see which one looks best. Go to Custom Resolution and select a different resolution, measured in Hertz. If out of sync, it could create horizontal lines or other display problems.Ī projector’s resolution can commonly be found in its Setup Menu under Video Output Setup. The resolution will change, however, often your projector screen refreshes. Your projector may be set to the wrong resolution, resulting in flickering horizontal lines. Turn on your projector’s Progressive setting and observe any changes to the image. This setting is often found in the unit’s Picture Settings, though every projector brand will be different. This helps prevent the horizontal lines from forming on-screen, ensuring a smooth and evenly colored picture. When enabled, this feature scans all the lines on the projector screen at one time, instead of every other line. Some projectors, like Epson projectors, have a Progressive setting. Some cables, like HDMI cables, need to be routinely replaced since they wear down over time. If you’re using a VGA cable, make sure its two screws are tight. laptop, tablet, monitor, phone, etc).Ĭheck each cable and adjust it, if needed. Faulty or misplaced cables could be causing the horizontal lines on your projector screen, especially if they’re connected to an external input source (e.g.
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