When i turn the power switch to on the fan keeps running and doesn't shut down, the bulb is not working and the light next to the power switch which usually shows if the projector is on is also not working. It doesn't show green or red.
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Re: infocus 4805 projector
There is a cooling off period that your projector will do in order to make sure it does not implode or improperly destroy your lamp. It is very fragile and each time you turn on your projector it lights up almost like you would light up a candle. Each igniting of the lamp creates a decrease average of 3 hours per turning it on/ff.
also, have you tried another lamp and reset the hours, or cleaned out the filter at all?
Let me know how things go for you. I wish you well and hope that helps fixes the problem.
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when you changed the lamp, did you blow the dust out of the projector? if the screen on the side of the lamp is blocked (i.e. with dust), the lamp will blow quickly. if the projector were to overheat, by the fans not running or blocked vents, everything would shut down and the led would blink red.
first thing's first- clean the dust out of the projector with canned air. excessive dust and heat are death to a projector. then check the colorwheel. if you don't hear a high-pitched whir or you hear a buzzing, the colorwheel needs to be replaced. the lamp won't strike without it. next check both fans. you may need to take the top off to do it. if both fans don't spin properly, it will overheat. many times the larger fan (lamp fan) will burn out or the circuit that starts it burns out. next, check the new lamp. does it have black spot, bulges, or fogging? if so, you'll need to replace it. if you do have to, don't get the cheapest one from "bob's lamps" online. you get what you pay for. if all that is ok, then you have a bad power supply. it's rare that this model has ps issues, but it's not unheard of. you could get the part(s) from an infocus service center, or send it in to them for repair. either way, try av solutions in ny. they're really good. www.avsolutionsny.com
What I have just finished doing with my x2, because it was the controller board not giving enough voltage to the fan. I used my kiwi initiative and hard wired an old nokia cellphone charger transformer inside the projector and connected to the 240V inlet from the underside of the power supply board, this worked brilliantly and supplies the fan with the power, the only dis advantage is that the fan will keep spinning as long as the projector is plugged in (could be easily fixed with a switch), but the way I see it it's better for me because it cools the bulb down a lot longer. Saved me from buying a new projector Lol, if you would like I can send a pic of what I have done?
I think the problem is the ECA controller (main board). It is through this that the fans are powered. Try to measure the voltage supplied to it (CN377 on the board for the larg lamp fan CN376 for the smaller fan), it shouldn't be less then 5v this can only be achieved if you activate the lamp door switch by jamming a piece of card board in it and powering the projector up. Take caution, and don't touch anything else, high power voltages are also present. You could also try to supply the fan with an external supply 6 to 12 volts after you unplug it from the main board, to make sure the fan is OK making sure of the correct polarity, red wire is +, black is -.