Question about Optoma HD70 DLP Projector
The unit started flickering colors and then went out. the lamp life was over. We replaced the lamp but cannot get the unit to power up.
I had the same issue.
Take the bulb cover off and hold it just above the unit. notice how that part that sticks down has a little curve to it. The curve is designed to gently push that little metal wire as the cover is lowered.
If you take a small toothpick and exercise the little wire in... NOT DOWN... you will hear a small click. That is the switch making contact. When it makes contact and clicks... and you plug it in the green light will be on again... and the unit will work fine.
You do not have to take the tabs off.
Just exercise the switch... put the cover on slowly... be very quiet and you can hear the click sound.
Plug it in and you are good.
And if the color starts to flicker on and off... it needs a VERY good cleaning... not a new bulb. Read my other posting to the guy with the fan picture.
Posted on May 13, 2009
I figured it out. The above posts are right, the problem is the little metal switch that the tab on the cover is supposed to move. The problem is that the tab is not designed all that well so it ends up pushing the metal switch down, instead of the left. You will notice that the cover has a slight bump in the middle when closed if the switch is not engaged properly. The cover should be totally flat and close all the way without having to told it down. And it should go easily without having to push it down.
To get it in properly, I don't recommend breaking off the tabs like someone above suggested. Instead, put the cover on and when lowering it, you have to kind of wiggle it back and forth from left to right while slowly lowering it. You will feel the switch move out of the way and the cover should close nice and easy and snug; compared to when the switch is not engaged properly as I described above.
Hope this helps, I have light now!
Posted on Mar 05, 2009
I just replaced my Optoma HD70 bulb and had the same problem. No power at all. When I removed the outer door covering the bulb (thinking I had seated it incorrectly) I noticed a small tab sticking out. This tab on the cover has to strike the switch next to the bulb. It looks like a little wire where you plug the bulb in (it is opposite of the front of the projector). If the tab doesn't hit this switch the projector thinks you are trying to run the projector with the cover off.
Posted on Feb 13, 2009
I used a matchbook cover to keep switch moved over and all is fine
Posted on Feb 16, 2009
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