Question about InFocus IN35W Projector

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Infocus IN35 Power Problem

Hello,

My Infocus IN35 projector won't power up, at all. I have a friend who is an electronic engineer, he has fixed projectors for me in the past but he can't seem to get any further with this one without the schematics (which I guess are impossible to get!) The board is made by Power-One, I can't seem to see a model number anywhere.

Is anybody familar with this brand or have any suggestions to what I could try? I have a photo of the board if this is any help?

Any help would be greatly apreciated
Best Regards
Simon

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  • Richard C Cohen
    Richard C Cohen May 11, 2010

    How old is the projector? I used to work on Infocus and they are notorious for making parts 5-7 years out. After that, a discontinued unit is good only till the parts run out...No schematics exist unless you were an authorized repair facility and it was just finding out which board was bad and replacing it--I assume they didn't want the risk of having partial repairs floating around out there. JUST A NOTE: There is a nasty little bugger on the power supply section called a THERMISTER! Its bright blue, looks like a fat capacitor, has NO markings on it and will cause the problem you have! It liked to have driven us CRAZY trying to find a suitable replacement. (remember--no markings, right?) Heh, try one of the major electronics parts houses like Newark or some such...Figure on 5 amps working current--that's what the fuse is rated for. In the lab, we used to laugh and call the thing (the automatic *break* device). Hope I helped you some!---Rick

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Check the interlock switch for the lamp door (on the fan bracket). if the switch doesn't work, the projector won't turn on. also check to see if the ribbon cable for the top case buttons is connected well. if still a no-go, it is the power supply (part # 510-2189-00). if you want to try and fix it instead of purchase it, start with the caps. some of them bulge and some tend to dry out prematurely without physical damage showing. start with the large one in the middle. you should at least get 5v from one of the points. you won't get any more unless you get a signal from the main board turning the rest of the power supply on. and there's where the problem may lie.

Posted on Sep 09, 2009

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