If the LED lights touch the foreign matter, the short circuit may occur and cause malfunction of the lights.ī.The iron will be used during the lights replacement process and the positive and negative of the lights are welded on the power board. Can I replace the LED lights by myself?Ī.
Vibration or shock may get the structure stuck. Why the focus(or the keystone) can't move and doesn't work? The LCD projector is not dust-proof and the dust can get into the projector through the air inlet or the dust is inside the projector already so that the projection shadow occurs. 8. How to remove stains or dirt on the projection screen of an LCD projector? Do not block the air inlet/outlet and do not use the projector under a high-temperature environment. Usually, this problem is caused by the malfunction of the cooling system.ī.Please check if the fan is working normally.
The LED lights have thermal protection settings and it will turn off automatically when the temperature is too high. Why the projector's screen turns black in 10 mins after turning on the projector? However, it can be turned on after cooling down.Ī. It is suggested that the projector shall not be used under a high-temperature environment and please do not block the air inlet/outlet. The burn-in is typical and usually caused by the malfunction of the cooling system.
6. How to remove the burn-in on the projection screen? The shadow can be a display error caused by oil dirt or other dust. 5. How to remove the shadow on the projection screen? VGA is a video transmission standard and can only transmit videos or images ĭ.It is highly possible that the mainboard of the projector has broken down if the external loudspeakers fail to synchronize with sounds. You may switch to other signal sources like HDMI, flash drive play to decide whether it's the problem of the speakers ī.If other signal sources are normal, you may check if the fire stick has been misused or broken down Ĭ.VGA signal does not support audio transmission. First, to rule it out as the cause of the speakers' problem. The external loudspeakers do not synchronize with sounds.Ī. 4. There's no sound after connecting the fire stick. The dirt on the surface of the lens can be wiped off by cleaning cloth and it will not be a matter to the use.ī.If the dirt or fingerprints are within the lens, the consumers may not be able to deal with this problem by themselves.Ĭ.Before the products leave the factory, the QA technician will carefully check the cleanliness inside the lens while there is a missing rate of inspection or the accidental drop of the machine may also cause a dirty lens. First, make sure the dirt or fingerprints were not stuck to the surface of the lens when the consumers were unpacking the product or during the use of the projector.
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How to remove fingerprints inside the lens?Ī. If the air humidity is not within the range, you may take some measures to reduce the humidity like put a dehumidifier in the room ī.Pre-heating before turning the projector on can help get rid of the condensation, or you may put the projector in a dry environment for 48 hours. The use and preservation humidity of the projector should be controlled between 40% and 80%. 2. How to remove the condensation inside the lens?Ī. The noise of the fan should be within 50DB on the date of manufacture.Ĭ.Customers are not allowed to replace the fan by themselves. You may check whether the fan can work normally without playing any videos or music when the projector is on.ī.There is the heat source of the LED lights inside the projector and it needs the fan to cool down. the fan will get loose because of the collision, therefore, it will make noises). First, to rule it out as the cause for the fan's problem (e.g. Is there any way to reduce noise? Can I replace the fan with my own accessories by myself?Ī.
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