I have an Infocus LP690 projector that is displaying lines down either side of
the image. It appears to be something to do with the mirror or LCD alignment as the
colours of the lines are red green and blue? The lines are roughly 2-3 inches
wide and are more visible on the right hand side. This is from all sources. The
bulb has used approx 350 hours and the areas unaffacted by the lines are crystal
clear. However the whole image does appear to jump up and down slightly. THanks
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Re: LP690 projector displaying strange lines
To adjust those mirrors, you need to power down, unplug, remove the top, remove the wires from the main board, remove the main board, adjust one mirror, reinstall everything, power up, see whatever difference it made, power down and repeat until it's fixed. it's quite a chore. if that's not the problem, you'll need to replace the optical engine (which isn't cheap) because they don't sell individual parts.
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If your InFocus 4805 projector is having a hard time powering on or doesn't power on at all, it could be one of two things. Due to the extreme temperature of the lamp that causes the temperature of the projector to rise, every InFocus 4805 projector has a cooling system. Check your projector's cooling solution, as it may need to be replaced. Also check the projector's fan---if the fan doesn't spin, the unit will not turn on. If the problem is the fan, you'll have to get it replaced. You can do this at the same place you bought your projector.
If your InFocus 4805 Projector powers on but does not project any light, the lamp will need to be replaced. All projector lamps must be replaced at some point---how often usually depends on how much use the device gets. Simply order a replacement lamp, unscrew the old one and screw the new one in. The projector will then work like new.
If your InFocus 4805 projector powers on and is displaying images but the colors on the images appear warped or are not in the proper places, your "color wheel" will need to be replaced. The color wheel is a small device that essentially acts like a prism. Light is projected through it and it displays the appropriate colors on screen the way they appear in the original video source. Order a replacement color wheel that fits your model and use your instruction manual as a guide as you swap the old one out and put the new one in.
You have to tell the computer you hooked up an additional external monitor. Lower left on the keyboard you will see a "FN" key. Across the top, your F keys...look for an icon that looks like a monitor. Usually F5, F7 or F8. Hold down the FN key and select the F5 etc key which is the command to display the image through the external port. Doing this once displays image through the projector and laptop. Twice displays image to projector only and three times returns to display only on laptop again.
you need to clean and resolder the edge connector on the power supply where it connects to the main board. on this series of prohector, this is a common problem. that and the yellowing of the image due to the frying of the light filter on the blue lcd panel (keep the projector clean and free of dust and you will avoid this, as there are no longer any parts available).